FeelElec
FY6900 Series Fully Numerical Control
Dual Channel Function/Arbitrary Waveform Generator
User’s Manual
Rev1.0 May,2019
FeelElec
FY6900 Series User’s Manual I
Guaranty and Declaration
Copyright
© 2019 FeelElec Technology Co. Ltd. All Rights Reserved.
Declaration
● FeelElec reserves the right to modify or change parts of or all the
specifications and pricing policies at company’s sole decision.
● Information in this publication replaces all previously corresponding material.
● FeelElec shall not be liable for losses caused by either incidental or
consequential in connection with the furnishing, use or performance of this
manual as well as any information contained.
●Any part of this document is forbidden to be copied or photocopied or
rearranged without prior written approval of FeelElec.
Contact Us
If you have any problem or requirement when using our products or this
manual, please contact FeelElec.
Tel： 0086 371 68997005 E-mail：FeelElec@126.com
Website：www.feelelec.com
FeelElec
II FY6900 Series User’s Manual
Contents
Guaranty and Declaration ................................................................................... I
Product Introduction .......................................................................................... 4
Quick Start .......................................................................................................... 7
General Inspection ......................................................................................... 7
Front Panel Overview .................................................................................... 8
Back Panel Overview .................................................................................... 11
Power On and Inspection ............................................................................. 12
User Interface .............................................................................................. 13
Appearance and Dimensions ....................................................................... 15
Front Panel Operations .................................................................................... 16
Waveform Output ......................................................................................... 16
Select Output Channel ............................................................................................. 16
Select Waveform ...................................................................................................... 17
Set Frequency .......................................................................................................... 18
Set Amplitude ........................................................................................................... 19
Set Offset .................................................................................................................. 20
Set Duty Cycle (Rectangle)&Set pulse wave pulse width (Adj-Pulse) .................. 21
Set Phase ................................................................................................................. 22
Enable Output ........................................................................................................... 23
Example：Output Sine Waveform ........................................................................... 24
Burst ......................................................................................................... 26
Modulation Function ................................................................................. 26
Frequency Meter/Counter ............................................................................ 28
Enable the Counter................................................................................................... 28
Set the Counter ........................................................................................................ 29
Sweep .......................................................................................................... 30
Sweep Object ........................................................................................................... 30
Sweep Start Position ................................................................................................ 31
Sweep End Position ................................................................................................. 32
VCO (Voltage Control Output) Sweep ...................................................................... 33
Sweep Type .............................................................................................................. 34
Enable Sweep Function ........................................................................................... 35
System Configuration and Auxiliary Functions ............................................. 36
Save and Load ......................................................................................................... 37
Configuration ............................................................................................................ 38
Uplink ........................................................................................................................ 39
Synchronization ........................................................................................................ 40
Troubleshooting ............................................................................................... 41
Technical Specification .................................................................................... 42
Appendix ........................................................................................................... 47
FeelElec
FY6900 Series User’s Manual III
FeelElec
4 FY6900 Series User’s Manual
Product Introduction
This manual applies to each model of FY6900series Function/Arbitrary
Waveform Signal Generator. The last three characters of the model indicate the
up limit output of Sine Wave (MHz). For example, the “60M” of the Model Number
“FY6900-60M” indicates the Sine wave maximum output frequency is up to
60MHz.
FY6900series Dual-channel Function / Arbitrary waveform generator is a set
of Function Signal Generator, Arbitrary Waveform Generator, Pulse Generator,
Analog / Digital modulator, VCO, Sweep, Counters and Frequency Meter and
other functions in a high Performance, cost-effective, multi-function signal
generator. Abundant shortcut keys and graphical user interface simplifies every
operation. Users do not have to spend a lot of time to learn and familiar with the
operation of the instrument, you can be skilled use. For education, research and
development, production, testing, maintenance and other industries to provide a
new choice.
The instrument adopt the Direct Digital Synthesizer (DDS) technology
and provide stable, precise, pure and low distortion signals. Surface mounting
technology improves interference immunity and operational life span. Can output
up to 97 groups of functions / arbitrary waveform, contains 33 groups of preset
waveforms and 64 groups of user-defined waveforms. Preset waveforms: Sine,
Square, Rectangle (Duty Cycle adjustable), Pulse (Pulse width and cycle time
can be set accurately), Triangle/Ramp, CMOS(0~12V), Four channels TTL,
Exponential Rise, Exponential Fall, Noise, ECG, DC etc.
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FY6900 Series User’s Manual 5
Main Features:
u Adopt the Direct Digital Synthesizer (DDS) technology and provide stable,
precise, pure and low distortion signals.
u 2.4 inch TFT Color LCD with 320×240 resolution, displaying parameters and
graphics of the two channels at the same time.
u The instrument uses 14-bit high-speed D/A converter chip (5Vpp output
quantization error is less than 1mV), 250MSa/s sample rate, 14bits vertical
resolution.
u Can output up to 97 groups of functions / arbitrary waveform, contains 33
groups of preset waveforms and 64 groups of user-defined waveforms.
Preset waveforms: Sine, Square (Duty Cycle adjustable), Pulse (Pulse width
and cycle time can be set accurately), Triangle/Ramp, CMOS(0~12V), Four
channels TTL, Exponential Rise, Exponential Fall, Noise, ECG, DC etc.
u Enable to store 64 arbitrary waveform data files, each one of waveform
storage depth 8192 points * 14bits;
u Various modulation types: AM, FM, PM, ASK, FSK and PSK modulations.
u Sweep Function: It can sweep 4 properties of signals including frequency,
amplitude, offset and duty cycle; It has Linear and Logarithm two sweep types;
0.01S~999.99S sweep time; Up, Down and roundtrip sweep directions.
u VCO Function (Voltage Control Output): Can be achieved by an external input
signal: voltage controlling frequency, voltage controlling amplitude, voltage
controlling offset, voltage controlling duty cycle and PWM modulations.
u Burst Output Function: There has Manual Trigger, internal CH2 Trigger, and
External Trigger for your options. It can output 1~1048575 pulse trains.
u 100M Frequency meter function: It can measure frequency, period, pulse
width and duty cycle. Max. frequency workable is 100MHz and Min.
frequency workable is 0.01 Hz.
u Counter Function: It has 2 coupling measure modes including DC coupling
and AC coupling. This design can solve inaccuracy problem of AC coupling.
u Standard dual full functional channels which are equivalent to two
independent generators.
u Channel SYNC Function: Support waveform copy and state copy between
channels.
u Support two or more signal generators connected to achieve multi-channel
output, the maximum support 16-channel synchronous output, the phase
between each channel can be adjusted.
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u Precisely adjust the phases of the two channels, Precision can be 0.01°.
u Minimum amplitude resolution can be up to 1 mV. Amplitude range is
0~20Vpp.
u Duty-cycle of each channel can be adjusted independently0.01%-99.99%,
the adjusting resolution is 0.01%.
u -12V~+12V DC Offset function. Resolution 0.001V.
u Save function: It can save 20 sets user-set parameters and can be loaded at
any time.
u Communicating function: All functions can be controlled by PC program and
the communication protocol is open for secondary development.
u Output short-circuit protection: All channels can work more than 60 seconds
when the load is short-circuited.
u Provide powerful waveform editing PC software. Users can download
arbitrary waveform to this instrument after edit through PC program which is
included in user CD.
u Adopt ABS plastic shell with table type design. Use 100-240V (AC) wide
range voltage power supply.
u Can choose our FYA2000S series or FPA1000 series power amplifier to
output 20W~100W signal in DC-10MHz width without any distortion.
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FY6900 Series User’s Manual 7
Quick Start
General Inspection
Please follow the items below when you receive a new FY6900series
Function/Arbitrary Waveform Generator.
1． Inspect the shipping container for damage
Keep the damaged shipping container or cushioning material until the
contents of the shipment have been checked for completeness and the
instrument has passed both electrical and mechanical tests. The consigner or
carrier shall be liable for the damage to instrument resulting from shipment.
2． Inspect the instrument
In case of any damage, or defect, or failure, notify your FeelElec sales
representative.
3． Check the accessories
Please check the accessories according to the Appendix C ( packing lists). If
the accessories are incomplete or damaged, please contact your FeelElec sales
representative.
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8 FY6900 Series User’s Manual
Front Panel Overview
The front panel is divided into several function areas for easy operation.
Front Panel
Item
Function
Description
1
LCD
2.4 inch TFT（320×240）color LCD. Operation instruction please
check chapter “User Interface”.
2
Manu
Buttons
F1~F5 buttons are matched with Manu displayed on the LCD. Press
corresponding button to activate submenu represented
3
Function
Buttons Area
— Press this buttons to switch waveforms among Sine,
Square,Rectangle, Triangle and so on.
— Press this button to switch between frequency meter
and counter to measure frequency, period, duty cycle and
pulse width of external signal output.
— Both DC and AC are workable.
— Gate Time can be 1S, 10S or 100S.
— Dual channels output and measurement function
can work together at same time.
— Can sweep Sine, Square, Arbitrary and so on.
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FY6900 Series User’s Manual 9
— Can sweep frequency, amplitude, offset and phase.
— 2 sweep types: Linear, Logarithm.
— VCO voltage controls parameters of signal output
available (for example: voltage controlled oscillator).
— Auxiliary functions and system configuration setting.
— Can save 20 sets waveform parameters including
frequency, amplitude, offset, phase and so on.
— System Language has English and Chinese for
user’s option.
— Buzzer can be turned on/off in this manu.
— Set multimachine uplink.
— Switch Master-Slave status
— Set default status of dual channels at start-up.
— Trigger and modulation function button
— Set definite amount of pulse string to output.
— Set modulation mode: ASK, FSK, PSK
— VCO function can be set
— Frequency, Amplitude, Bias and Duty of
VCO Voltage Control Signal Generator
— Output function of various parameters such as VCO.
4
Arrows
Press Arrow buttons to select figure which you want to
edit when setting values of each parameter.
5
ADJ Knob
Press the knob as confirmation (OK button).
— Rotate the ADJ Knob to increase or reduce the current value
indicated by the cursor.
— Frequency unit can be changed by Press ADJ Knob under
Frequency value setting status.
— Press ADJ Knob to Start/Stop sweep under Sweep interface.
6
Power
Button
The power indicator keeps illuminating when power on.
Press the power button and the indicator change to notifylight status
and the signal output terminates.
7
CH1 channel
output
connector
CH1 connector, output impedance is 50Ω.
When CH1 channel activates (indicator illuminates), CH1 outputs
signal with parameters set.
8
Output
Channels
Control CH1 output. Press it to switch to CH1 parameter
setting interface.
— Press it to turn on CH1 output with current
configuration. The indicator will illuminate.
— Press it again to turn off CH1 output and the indicator
will extinguish.
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10 FY6900 Series User’s Manual
Control CH2 output. Press it to switch to CH2 parameter
setting interface.
— Press it to turn on CH2 output with current
configuration. The indicator will illuminate.
— Press it again to turn off CH2 output and the indicator
will extinguish.
—Confirm key
—When editing the frequency parameters, the unit of
frequency can be changed by pressing the knob down.
—When scanning the interface, press down the knob to
start/stop the scanning state.
9
CH2 channel
output
connector
CH2 connector, output impedance is 50Ω.
When CH2 channel activates (indicator illuminates), CH2 outputs
signal with parameters set.
10
AC coupling
measuring
terminal
BNC connector, input impedance 100Ω. For inputting signal of meter or
counter.
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FY6900 Series User’s Manual 11
Back Panel Overview
The back panel of FY6900is as picture 1-2 below. 4 BNC terminals on the left
are DC coupling measuring terminals Trig/FSK/ASK/PSK IN, external sweep input
VCO IN, Synchronization output connector SYNC OUT, and Synchronization
input connector SYNC IN. Then follows TTL output terminal, USB terminal, power
switch and power input socket.
1. BNC connector
Trig/FSK/ASK/PSK IN: DC coupling measuring terminal and ASK/PSK/FSK
modulation trigger input terminal.
VCO IN: External signal sweep input terminal can realize voltage controlling
frequency, voltage controlling amplitude, voltage controlling offset, voltage
controlling duty cycle and so on. Frequency of external signal input should be
lower than 500 Hz.
SYNC OUT: Synchronization signal output terminal.
SYNC IN: Synchronization signal input terminal.
2. TTL signal output
Frequency of Port A is same with frequency of CH1 output. Frequency of
Port B is same with frequency of Port A but with reverse phase (180°).
Frequency of Port C is same with frequency of CH2. Frequency of Port D is
same with Port C but with reverse phase (180°).
3. USB Device interface
It’s for communication with PC (This is a USB-TTL serial port and driver is
needed). Can programming by host computer.
4. Power switch and Power input socket(voltage range AC100V-AC240V).
Warning
To avoid instrument damage, voltage of signal input from EXT.IN
CANNOT exceed ±20Vac+dc.Voltage of signal input from
Trig/FSK/ASK/PSK IN CANNOT exceed DC5V.
Note
To ensure the normal work, please use 100-240V AC power
supply.
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12 FY6900 Series User’s Manual
Power On and Inspection
Connect to Power
Please connect the generator to AC power supply using the Power cable
supplied in the accessories. The power supply use 100-240V AC power. The
power of this instrument is less than 5W.
Power On
Turn on the power switch after the power cord is connected. The generator
will execute self-inspection. The LCD will show welcome interface after the
inspection is over. If the generator cannot work normally, please check the
Chapter “Troubleshooting” for solution.
Set the System Language
FY6900series Function/Arbitrary Waveform Generator supports Chinese and
English system languages. You can press SYS→CONF to switch the system
language.
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FY6900 Series User’s Manual 13
User Interface
The user interface of FY6900provides four types of display modes: Dual
Channels Parameters (default), Single Channel Extension, Auxiliary Functions
and System Interface.
Dual Channels Parameters (default)
The upper half of LCD displays the channel selected currently and the
parameters can be set. Press CH1 or CH2 to change current channel selected.
1-4 User Interface (CH1 selected)
Item Description
1 Current channel selected.
Display current channel selected for operation.
2 Current waveform selected.
Display the name of current waveform selected. For example,
“CH1=Sine” means current waveform selected of CH1 is
Sine Wave. It can be changed by press WAVE button.
Meanwhile, waveform can be changed quickly by rotating
ADJ Knob when waveform switch function is activated.
3 Output status of current channel.
Display On/Off status of current channel. It can be switched
by Press CH1 or CH2.
4 Waveform
Display diagram of current waveform（Including Arbitrary）.
Yellow indicates CH1 and blue indicates CH2.
5 Manu Bar
Display current operable options .
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14 FY6900 Series User’s Manual
6 Frequency
Display frequency value of current channel. Press FREQ
button to highlight it and use ADJ Knob and Arrows to change
the value.
7 Amplitude
Display amplitude value of current channel. Press AMPL
button to highlight it and use ADJ Knob and Arrows to change
the value.
8 Offset
Display DC Offset value of current channel. Press OFFS
button to highlight it and use ADJ Knob and Arrows to change
the value.
9 Duty Cycle
Display Duty Cycle value of current channel. Press DUTY
button to highlight it and use ADJ Knob and Arrows to change
the value.
10 Phase
Display Phase value of current channel. Press PHAS to
highlight it and use ADJ Knob and Arrows to change the
value.
11 Parameters of the channel unselected.
Display parameters of the channel unselected including
frequency, amplitude, offset, phase, duty cycle and output
status. These Parameters cannot be changed directly in this
interface. If you need to change them, Please switch the
channel to be selected.
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FY6900 Series User’s Manual 15
Appearance and Dimensions
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16 FY6900 Series User’s Manual
Front Panel Operations
Waveform Output
FY6900series can output waveforms (Sine, Square, Triangle/Ramp, Pulse
and Noise etc.) from one of the channels separately or from the two channels at
the same time. At start-up, the dual channels are configured to output a sine
waveform with 10kHz frequency and 5Vpp amplitude by default. Two channels
use default setting saved at Position 1 when power on. Users can configure the
instrument to output various waveforms.
Select Output Channel
CH1 and CH2 buttons are used to change current channel selected. At
start-up, CH1 is displayed on the top with yellow color and CH2 is displayed on
the bottom with blue color. Press CH1 or CH2 to select channel needed. When
selecting CH2 as output channel, CH2 parameters displays on the top for
configuration.
KEY POINT:
CH1 and CH2 can not be selected at the same time. Users can first select
CH1 and then select CH2 after configuring the waveform and parameters of
CH1. If you need to change the parameters of two channel at same time,
please refer to Chapter “Synchronization”.
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FY6900 Series User’s Manual 17
Select Waveform
FY6900 can output Function/Arbitrary Waveform including:
l Sine
l Square
l Rectangle
l Triangle/Ramp
l Rise Sawtooth
l Fall Sawtooth
l Lorenz Pulse
l Multitone
l Noise
l Electrocardiogram (ECG)
l Trapezoidal Pulse
l Sinc Pulse
l Narrow Pulse
l Gauss White Noise
l Step Triangle
l Positive Step
l Inverse Step
l Positive Exponent
l Inverse Exponent
l Positive Falling Exponent
l Inverse Falling Exponent
l Positive Logarithm
l Inverse Logarithm
l Positive Falling Logarithm
l Inverse Falling Logarithm
l Linear FM
l AM
l FM
l Positive Half Wave
l Negative Half Wave
l Positive Half Wave
Rectification
l Negative Half Wave
Rectification
l User-defined waveform
Press WAVE to change waveform selected. Or rotate ADJ Knob under waveform
switching status to change waveform. The waveform diagram displays on the
screen. Pressing the knob can change to arbitrary waveform directly when
choosing waveform. At start-up Sine is selected by default. (Users can also
configure start-up waveform. Please check Chapter “Save and Load”.
Waveforms
Sine Square
Rectangle Triangle
Sawtooth Arbitrary
Function Name
SINE SQUR
Rectangle TRGL Ramp Arb
Parameters
Frequency √ √ √ √ √ √
Amplitude √ √ √ √ √ √
Offset √ √ √ √ √ √
Phase √ √ √ √ √ √
Duty Cycle √
Note: Arbitrary waveforms can be edited and downloaded from PC software
provided by FeelElec. The relevant software and driver can be downloaded from
our website: www.feelelec.com .
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18 FY6900 Series User’s Manual
Set Frequency
Frequency is one of the most important parameters of waveforms. For
different instrument models and waveforms, the setting ranges of frequency are
different. For detailed information, please refer to “Frequency” in
“Specifications”. The default frequency is 10kHz.
Press FREQ button to highlight value of Frequency. Then use Arrow
buttons and ADJ Knob to set the value. Press Arrows button to move the cursor
and rotate ADJ Knob to set the value.
Under setting frequency status, press ADJ Knob to change frequency units
among MHz, KHz, Hz, mHz, μHz.
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FY6900 Series User’s Manual 19
Set Amplitude
The amplitude setting range is limited by the “Attenuation” and “Frequency”
settings. Please refer to “Output Characteristics” in “Specifications”. The
default value is 5Vpp.
Press AMPL button to highlight amplitude value. Then use Arrows button
and ADJ Knob to set the value. Press Arrows button to move the cursor and
rotate ADJ Knob to set the value.
Key Points：
1．What’s the difference of amplitude in Vpp and the corresponding value in
Vrms?
Answer:
Vpp is the unit for signal peak-peak value and Vrms is the unit for signal effective value.
The default unit is Vpp.
Note：
For different waveforms, the relation between Vpp and Vrms is different. The
relation of the two units is as shown in the figure below (take sine waveform as
an example).
According to the figure above, the conversion relation between Vpp and Vrms
fulfills the following equation:
Vpp = 2 2 Vrms
For example, if the current amplitude is 5Vpp, For sine waveform, the
converted value is 1.768Vrms.
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20 FY6900 Series User’s Manual
Set Offset
Press OFFS button to highlight offset value. Then use Arrows button and
ADJ Knob to set the value. Press Arrows button to move the cursor and rotate
ADJ Knob to set the value.
The offset accuracy is 1mV. i.e. 0.001V.
When frequency output is lower than 20MHz, the offset can be adjusted
during -12V~+12V.
When frequency output is higher than 20MHz, the offset can be adjusted
during -2.5V~+2.5V.
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FY6900 Series User’s Manual 21
Set Duty Cycle (Rectangle)
Duty cycle is defined as the percentage that the high level takes up in the
whole period (as shown in the figure below). This parameter is only available
when Rectangle is selected.
The setting range of duty cycle is limited by the “FREQ” setting. Please refer
to “Waveform Characteristics” in “Specifications”. The default value is 50%.
1. Press DUTY button to highlight duty cycle value. Then use Arrows button and
ADJ Knob to set the value. Press Arrows button to move the cursor and rotate
ADJ Knob to set the value.
l The setting range of duty cycle is 0.1%-99.9%；
l Press ADJ Knob under duty cycle setting status will initial the value to 50%.
Set pulse wave pulse width ( ‘Adj-Pulse’ wave)
Adjustable pulse wave refers to the square wave that can hold the fixed pulse
width at any frequency, that is, the pulse width set by the user does not change
with the frequency.
Pulse width setting method: in the adjustable pulse wave is selected, press
PULS button key to adjust the pulse wave pulse width time (Unit ns).The pulse
width can be set by the arrow button and the knob. Use the arrow button to move
the cursor to select the bit you want to edit, and then turn the knob to modify the
value. (Note: Do not set the length of the positive pulse width greater than or
equal to the cycle time of the output waveform).
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22 FY6900 Series User’s Manual
Set Phase
The setting range of phase is from 0° to 359.9°. The phase resolution is 0.1°.
The default phase value is 0°
The start phase displayed on the screen is the default value or the phase
previously set.
Then press PHAS button to highlight phase value. Then use Arrows button
and ADJ Knob to set the value. Press Arrows button to move the cursor and
rotate ADJ Knob to set the value.
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FY6900 Series User’s Manual 23
Enable Output
After configuring the parameters of the waveform selected, waveform output
could be enabled.
At start-up output of CH1 and CH2 are both turned on as default. At this time
indicator lights of dual channels illuminate.
The default status can be modified. Press【SYS】button and then press【MORE】
button to set the output status of dual channels.
For CH1 there are two status:
1) Generator is in parameter setting status and current channel selected is
CH1, then press CH1 to switch between output ON/OFF.
2) Generator is in other working status or current channel selected is not
CH1, then press CH1 to make CH1 as channel selected and press CH1
again to switch between output ON/OFF.
For CH2 there are two status:
3) Generator is in parameter setting status and current channel selected is
CH2, then press CH2 to switch between output ON/OFF.
4) Generator is in other working status or current channel selected is not
CH2, then press CH2 to make CH2 as channel selected and press CH2
again to switch between output ON/OFF.
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Example：Output Sine Waveform
This section mainly introduces how to output a sine waveform (Frequency:
20kHz, Amplitude:2.5Vpp, DC Offset: 1.6VDC, Start Phase: 90.9°) from the [CH1]
channel.
1. Select output channel
Press CH1 to select CH1. Now all characters and border of the channel is
displayed in yellow.
2. Select the Sine
Press WAVE button to select Sine. Then the diagram of Sine displays on the
screen.
3. Set the frequency
Press FREQ button to highlight the frequency value. Press Arrow buttons to
move the cursor to the position “2” below. Then rotate the ADJ Knob to get “2”.
FREQ：00’020.000’000’000kHz
4. Set the Amplitude
Press AMPL to highlight the amplitude value. Press Arrow buttons to move
the cursor and rotate the ADJ Knob to get the figures below.
AMPL：02.500V
5. Set Offset
Press OFFS to highlight the offset value. Press Arrow buttons to move the
cursor and rotate the ADJ Knob to get the figures below.
OFFS：01.600V
6. Set Phase
Press ▼ button to page down and press PHAS button to highlight phase
value. Then Press Arrow buttons to move the cursor and rotate the ADJ Knob to
get the figures below.
PHAS：090.9°
7. Enable the output
Press CH1 button to turn CH1 output on. The [CH1] connector outputs the
configured waveform.
8. Observe the output waveform
Connect the [CH1] connector to the oscilloscope with BNC cable. The
waveform is as shown below.
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FY6900 Series User’s Manual 25
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26 FY6900 Series User’s Manual
Burst
FY6900can output waveform with specified number of cycles (called Burst)
from the CH1 channel. FY6900supports control of burst output by CH2(internal),
manual or external trigger source; The signal generator can generate burst using
Sine wave, Square wave, Ramp wave, Pulse, Noise wave or arbitrary waveform
(except DC).
Enable Burst Function
Press the front panel MOD button, then press MODE button to enter burst
function. The instrument supports [CH2], [Ext. AC], [Ext. DC] and [manual] four
trigger output modes, which can be selected by the corresponding button. When
the burst function is enabled, press the PARA button to set the burst output
pulse number. Use arrow buttons and ADJ Knob to set the numbers from 1 to
1048575. Then the generator will output burst waveform according to current
configuration.
l CH2 Trigger: CH1 will generate a burst when CH2 generates a pulse.
l Ext. AC: CH1 will generate a burst when [Input] connector was inputted a
pulse.
l Ext. DC: CH1 will generate a burst when [Trig IN] connector was inputted a
pulse.
l MANU Trigger: User can trigger a burst by pressing ADJ Knob (OK button).
Press the [WAVE] button to change the current burst output signal waveform.
Press the [FREQ] button to change the current burst output signal frequency.
Press the [AMPL] button to change the current burst output signal amplitude.
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FY6900 Series User’s Manual 27
Modulation Function
Press the MOD button to enter the modulation function interface.
Press [MODE] soft key, you can choose different modulation types.
Modulation Type AM, FM, PM, ASK, FSK, PSK
Carrier Waveform Sine, Square, Triangle, Ramp, Arbitrary waveform (Except DC)
AM
Source Internal (CH2) / External (VCO IN Port)
Modulating Waveform Sine, Square, Triangle, Ramp, Arbitrary waveform
Depth 0% to 120%
Modulating Frequency Internal : 1μHz~1MHz; External: 1μHz~2KHz;
FM
Source Internal (CH2) / External (VCO IN Port)
Modulating Waveform Sine, Square, Triangle, Ramp, Arbitrary waveform
Modulating Frequency Internal : 1μHz~1MHz; External: 1μHz~2KHz;
PM
Source Internal (CH2) / External (VCO IN Port)
Modulating Waveform Sine, Square, Triangle, Ramp, Arbitrary waveform
Phase Deviation 0° to 360°
Modulating Frequency Internal : 1μHz~1MHz; External: 1μHz~2KHz;
ASK
Source Internal (CH2), External (ASK IN Port), Manual
Modulating Waveform Square with 50% duty cycle.
Key Frequency 1μHz~10MHz
FSK
Source Internal (CH2), External (FSK IN Port), Manual
Modulating Waveform Square with 50% duty cycle.
Key Frequency 1μHz~10MHz
PSK
Source Internal (CH2), External (PSK IN Port), Manual
Modulating Waveform Square with 50% duty cycle.
Key Frequency 1μHz~10MHz
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28 FY6900 Series User’s Manual
Frequency Meter/Counter
FY6900provides a counter which can measure various parameters of
external input signal such as frequency, period, duty cycle, positive pulse width
and negative pulse width. Dual channels output can work together with counter.
Enable the Counter
Press MEAS button of the front panel to enable the counter and
measurement Manu. External signal for measurement can be inputted by Input
connector(AC coupling) or Trig IN(DC coupling). The result will be displayed on
the screen in real time. The lowest frequency workable is 0.01 Hz. （GATE
TIME:100S）。
Press COUN button to enter external pulse counter function. At this time
COUN button is turned into FREQ button. Repeat pressing this button to switch
between FREQ and COUN.
2-1 Frequency Meter/Counter Interface
When the Frequency Meter/Counter is turned on, press STOP button to pause
and press ZERO button to reset.
Key Point：
Amplitude of signal inputted should be bigger than 1.5V. Maximum safe
voltage inputted from Input and Trig IN is 5V. The Uplink function need to be
turned off when using Counter/Meter.
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FY6900 Series User’s Manual 29
Set the Counter
Gate Time
Press GATE button to select gate time. The default is “1S”. It’s better to use
“10S” or “100S” as gate time for low frequency signal.
Gate Time Frequency Resolution
1S 1Hz
10S 0.1Hz
100S 0.01Hz
Coupling
Set the coupling mode of the input signal to “AC” or “DC” and the default is
“AC”.
When the AC coupling mode is selected, signal should be inputted from Input
terminal.
When the DC coupling mode is selected, signal should be inputted from Trig IN
terminal.
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30 FY6900 Series User’s Manual
Sweep
Press SWEEP button of front panel to enable sweep function. FY6900can
output sweep from CH1. In sweep mode, the generator outputs signal variably
from the start frequency to stop frequency within the specified sweep time. It can
generate sweep output for Sine, Square, Triangle/Ramp and arbitrary waveform.
2-2 Sweep setting interface
Sweep Object
FY6900Can output sweep from CH1. The sweep objects include frequency,
amplitude, offset, duty cycle. It can be selected by pressing OBJE button.
l In Frequency Sweep Mode, the generator will output signal variably from
start frequency to end frequency within the specified sweep time.
l In Amplitude Sweep Mode, the generator will output signal variably from
start amplitude to end amplitude within the specified sweep time.
l In Offset Sweep Mode, the generator will output signal variably from start
offset to end offset within the specified sweep time.
l In Duty Cycle Sweep Mode, the generator will output signal variably from
start duty cycle to end duty cycle within the specified sweep time.
FeelElec
FY6900 Series User’s Manual 31
Sweep Start Position
When Sweep function is enabled. Sweep start position need to be set
according to sweep objects.
l Frequency Sweep: Press STAR button to highlight start frequency
parameter. Press the Arrow buttons and rotate the ADJ Knob to set the
specified value. For example:
START：00’010.000’000’000kHz
l Amplitude Sweep: Press STAR button to highlight start amplitude parameter.
Press the Arrow buttons and rotate the ADJ Knob to set the specified value.
For example:
START：10.00V
l Offset Sweep: Press STAR button to highlight start offset parameter. Press
the Arrow buttons and rotate the ADJ Knob to set the specified value. For
example:
START：00.00V
l Duty Cycle Sweep: Press STAR button to highlight start duty cycle
parameter. Press the Arrow buttons and rotate the ADJ Knob to set the
specified value. For example:
START：50.0%
FeelElec
32 FY6900 Series User’s Manual
Sweep End Position
When Sweep function is enabled. Sweep end position need to be set
according to sweep objects.
l Frequency Sweep: Press END button to highlight end frequency parameter.
Press the Arrow buttons and rotate the ADJ Knob to set the specified value.
For example:
END：00’020.000’000’000kHz
l Amplitude Sweep: Press END button to highlight end amplitude parameter.
Press the Arrow buttons and rotate the ADJ Knob to set the specified value.
For example:
END：20.00V
l Offset Sweep: Press END button to highlight end offset parameter. Press
the Arrow buttons and rotate the ADJ Knob to set the specified value. For
example:
END：10.00V
l Duty Cycle Sweep: Press END button to highlight end duty cycle parameter.
Press the Arrow buttons and rotate the ADJ Knob to set the specified value.
For example:
END：80.0%
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FY6900 Series User’s Manual 33
Sweep Time
When Sweep function is enabled, press SOUR button to select it and press it
again to change between TIME and external sweep (VCO Sweep). Press the
Arrow buttons and rotate the ADJ Knob to set the specified value of weep time.
The default is “10S”. The work range is 10mS~999.99S. For Example:
SOUR: TIME 999.99S
VCO (Voltage Control Output) Sweep
Function instruction: External voltage can control signal output by External
Sweep (VCO) function. It can realize voltage controlling frequency (VCF), voltage
controlling amplitude (VCA), voltage controlling offset, voltage controlling duty
cycle and so on.
Operation method: Press [SWEEP] button to enter sweep function interface.
Then press[F4 SOUR] button to switch the source to VCO IN. After Sweep Object,
Start, End and Sweep Mode being set, connect the external signal from VCO IN
terminal on the back panel. Then press the ADJ knob (OK button) to enable VCO
sweep function. Press ADJ knob (OK button) again to disable it.
Note: Signal input for External Sweep (VCO) need to be input from VCO IN port of
back panel. Its frequency need to be less than 500 Hz and its voltage amplitude
need to be among 0~5V.
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34 FY6900 Series User’s Manual
Sweep Type
FY6900provides Linear, Logarithm sweep types. The default is Linear sweep.
The sweep type can be switched by pressing “MODE” button.
Linear Sweep
In linear sweep type, the signal parameter varies linearly. For example, in the
frequency sweep the output frequency of the instrument varies linearly in the way
of “Changing several Hertz per second”. The variation is controlled by “Start
Frequency”, “End Frequency” and “Sweep Time”.
The step value of linear sweep object is computed by the generator, the
formula is as follows:
Step value=（End value — Start value）/（Sweep time*100）
Logarithm Sweep
In linear sweep type, the signal parameter varies logarithmically.
For example, in the frequency sweep the output frequency changes in the way of
“octave per second” or “decade per second”. The variation is controlled by “Start
Frequency”, “End Frequency” and “Sweep Time”.
When Logarithm Sweep is enabled, users can set the following parameters:
Start Frequency (Fstart), Stop Frequency (Fend) and Sweep Time (Tsweep).
The function prototype of Logarithm Sweep:
F
current
=P
T
F
current
is the instantaneous frequency of the current output. P and T could be
expressed as shown below by the above-mentioned parameters:
P=10
lg(F
stop
/F
end
)/T
sweep
T=t+lg(F
start
)/lg(P)
Wherein, t is the time from the start of the sweep and its range is from 0 to
T
sweep.
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FY6900 Series User’s Manual 35
Enable Sweep Function
Press SWEEP button of front panel to enable sweep function. Then press
ADJ Knob to start sweep process. Press ADJ Knob again to stop sweep.
Start value and End value
Start value and stop value are the upper and lower limits of sweep for
specified parameter. sweep. The generator always sweeps from the start value to
the end value and then returns back to the start value and continues indefinitely.
For example, in Frequency Sweep function:
l Start Frequency < End Frequency: the generator sweeps from low
frequency to high frequency.
l Start Frequency > End Frequency: the generator sweeps from high
frequency to low frequency.
l Start Frequency = Stop Frequency: the generator outputs with a fixed
frequency.
When Sweep function is enabled, press STAR button to highlight start value. Use
arrow buttons and ADJ Knob to set the specified value. Different frequency sweep
corresponds to different start frequency and end frequency range.
Sine： 100mHz to 25MHz~60MHZ (Varies according to different model)
Square ： 100mHz to 25MHz
Ramp ： 100mHz to 10MHz
Arbitrary ：100mHz to 10MHz
The generator will restart sweep (according to the current new configuration)
from the specified “start frequency” after start or end frequency is changed.
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36 FY6900 Series User’s Manual
System Configuration and Auxiliary Functions
Press SYS button of front panel to enter System interface. The interface
displays the instrument parameter storage [SAVE] , parameter loading [LOAD] ,
configuration [CONF] and other functional [MORE] information.
SAVE: To save current parameters of waveform to save positions (20 sets).
LOAD: To load parameters to current working status from save positions.
CONF: To set system language, turn on/off Buzzer and Uplink mode.
MORE: To set default output status of dual channels.
CH1 BOOT：ON
The default CH1 channel is on to turn on the output state，can press the [ F1 ]
button to set the default output status of the CH1 channel.
CH2 BOOT: ON
The default CH2 channel is on to turn on the output state，can press the [ F2 ]
button to set the default output status of the CH2 channel.
FeelElec
FY6900 Series User’s Manual 37
Save and Load
Press SAVE button in System interface to save parameters of current
waveform to specified position. Press LOAD button to load parameters of
waveforms previously set to current system status.
Select S xx on the right to save current parameters to corresponding
position.
Select L xx on the right to load parameters from corresponding position to
current system status.
l FY6900provides 20 positions for saving.
l The generator will load default parameters from Position 01
automatically after start-up.
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38 FY6900 Series User’s Manual
Configuration
Press SYS button to enter system interface. Then press CONF button to enter
system configuration interface. Press corresponding buttons to select system
work mode.
l Press 中文 button to select Chinese as system language.
l Press Eng button to select English as system language.
l Press BUZZ button to turn on/off buzzer. On is the default.
l Press M/S button to set uplink mode: Master/Slave. Master is the
default.
l Press UPLI button to turn on/off uplink function. Off is the default.
l
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FY6900 Series User’s Manual 39
Uplink
FY6900supports multi-machine uplink, which can provide users more
channels for output. In uplink network, only one master machine can exist. Others
must be set as slave machine. The setting method is as follows:
l Select on FY6900as master machine. Press SYS -> CONF ->M/S, to set the
UPLINK MODE to be “Master”. Press UPLI, to set the UPLINK to be “ON”.
l Set all other machines to be slave machines. Press SYS -> CONF ->M/S, to
set the UPLINK MODE to be “Slave”. Press UPLI, to set the UPLINK to be
“ON”. Repeat this step to set all slave machines.
l Connect all FY6900in parallel by SYNC connecter.
l The uplink machines cannot exceed 8 because the driving ability.
When the setting above has been finished, all machines in network will work
synchronously according to the start phase of master machine. When outputting
signal with same frequency, multi channels output can be executed with phase
adjustable.
FeelElec
40 FY6900 Series User’s Manual
Synchronization
Press the [SYNC] button to enter the synchronization function setting
interface. Press corresponding buttons on the right to highlight or cancel selecting
status.
When the synchronization of corresponding parameters are activated, the
corresponding parameters of CH2 will vary according to variation of CH1
automatically. The parameters workable for synchronization include waveform,
frequency, amplitude, offset, and duty cycle, which can be set separately.
When WAVE is highlighted, the waveform of CH2 will vary according to
variation of CH1.
When FREQ is highlighted, the frequency of CH2 will vary according to
variation of CH1.
When AMPL is highlighted, the amplitude of CH2 will vary according to
variation of CH1.
When OFFS is highlighted, the offset of CH2 will vary according to variation
of CH1.
When DUTY is highlighted, the duty cycle of CH2 will vary according to
variation of CH1.
FeelElec
FY6900 Series User’s Manual 41
Troubleshooting
This chapter lists the commonly encountered failures of FY6900and their
solutions. When you encounter these problems, please solve them following the
corresponding steps below. If the problem remains still, please contact FeelElec
and provide the device information (Press SYS to get it).
Failure Phenomena Solutions
The screen of the
generator is still dark (no
display) after switch on.
1) Check whether the power is correctly connected.
2) Check whether the power switch has been pulled
in place.
3) Restart the instrument after finishing the above
inspections.
4) If it still does not work correctly, please contact
FeelElec.
CH2 is locked.
1) Check that the signal generator is operating in
synchronous state. Press the SYNC button to enter
the synchronization settings interface to cancel all
synchronization parameters.
2) If the problem is still, please restart the generator.
Set correctly,
but no waveform output
1) Check whether the BNC cable is connected
tightly with CH1 or CH2 connector.
2) Check whether the BNC cable has internal
damage.
3) Check whether the BNC cable is connected
tightly with the test instrument.
4) Check whether the indicators of CH1 or CH2 is
turned on. If not press corresponding button to turn
it on.
5) If the problem is still, please contact FeelElec.
FeelElec
42 FY6900 Series User’s Manual
Technical Specification
Unless specified, all specifications can be guaranteed if the following two
conditions are met.
l The generator has passed self-inspection.
l The generator has been working continuously for at least 30 minutes
under the specified temperature (18℃~28). ℃
All the specifications are guaranteed unless those marked with “typical”
Frequency
Model FY6900-20M
FY6900-30M
FY6900-50M FY6900-60M
Sine 0~20MHz 0~30MHz 0~50MHz 0~60MHz
Square 0~15MHz 0~25MHz 0~25MHz 0~25MHz
Ramp, Triangle 0~10MHz 0~10MHz 0~10MHz 0~10MHz
Pulse 0~10MHz 0~10MHz 0~10MHz 0~10MHz
TTL/CMOS 0~10MHz 0~10MHz 0~10MHz 0~10MHz
Arbitrary Waveform 0~10MHz 0~10MHz 0~10MHz 0~10MHz
Minimum pulse width
20ns(All models of pulse wave minimum width can reach 20ns)
Min. Resolution on
all frequency range
1μHz (Min. resolution can reach 1μHz on all frequency range to
ensure adjusting accuracy under high frequency. For example, it
can output 10.000000000001MHz signal).
Accuracy ±20ppm
Stability ±1ppm/ 3hours
Waveform Characteristics
Waveforms
Sine, Square, Rectangle (Duty Cycle adjustable), Pulse (Pulse
width and cycle time can be set accurately), Triangle/Ramp,
Sawtooth Wave, CMOS, Four channels TTL, DC, Half wave, Full
wave, Positive Step, Inverse Step, Positive Exponent, Inverse
Exponent, Lorenz Pulse, Multitone, Noise, ECG, Trapezoidal
Pulse, Sinc Pulse, Narrow Pulse, Gauss White Noise, AM, FM,
and other 64 sets customer-defined waveform.
Non-Volatile Storage
Can store 64 user-defined arbitrary waveforms, (8K 14bits) * 64
Waveform Length 8192 points * 14bits
Sampling Rate 250MSa/s
Vertical Resolution 14 bits
Sine
Harmonic
Suppression
≥50dBc(<1MHz); ≥45dBc(1MHz~20MHz);
Total Harmonic
Distortion
<0.5% (20Hz~20kHz,0dBm)
FeelElec
FY6900 Series User’s Manual 43
Rectangle
Rise/Fall Time
≤7ns (VPP<5V)
Overshoot ≤5%
Duty Cycle 0.01%~99.99% (Resolution 0.01%)
Sawtooth wave Linearity >99% (0.01Hz~10kHz)
Output characteristics
Amplitude（VPP）
Frequency≤5MHz: 1mVpp~24Vpp;
5MHz<Frequency≤10MHz: 1mVpp~20Vpp;
10MHz<Frequency≤20MHz: 1mVpp~10Vpp;
Frequency>20MHz: 1mVpp~5Vpp;
Resolution 1mV
Amplitude Stability ±0.5%/ 5 Hours
Amplitude flatness ±2.5%(<10MHz);±5%(>10MHz);
Waveform Output
Impedance
50Ω±10%（Typical）
Protection
All channels can work more than 60 seconds when the load is
short-circuited.
DC Offset
Offset Range Frequency≤20MHz: ±12V; Frequency>20MHz: ±2.5V;
Offset Resolution 1mV
Phase Feature
Phase range
0~359.99°
Phase resolution
0.01°
TTL Output
TTL Level Amplitude
>3Vpp
Fan-out >8 TTL LOAD
Rise/Fall Time ≤10ns
CMOS Output
Low Electric Level <0.3V
High Electric Level 1V~12V
Rise/Fall Time ≤18ns
External Measurement
Function Frequency, Period, Positive/Negative Pulse Width, Duty Cycle
Input Voltage Range
1Vpp~20Vpp
Frequency Meter
Resolution 0.01Hz (Gate Time = 100S)
Range 0.01Hz~100MHz
FeelElec
44 FY6900 Series User’s Manual
Sensitivity Gate Time 3 grades (1S, 10S, 100S) adjustable
Counter
Range 0-4294967295
Coupling DC, AC
Working Mode
Manual
Period Measurement Range 5ns ~ 20s
DC coupling
measurement
Pulse Width
Measurement Range 0ns ~ 20s
Resolution 5ns
Duty Cycle Range (Display) 0% ~ 100%
Sweep
Carrier Waveform Sine, Square, Ramp, Arbitrary (except DC)
Sweep Type Linear or Logarithm
Sweep Direction Up, Down and roundtrip sweep directions;
Sweep Objects Frequency, Amplitude, Offset, Duty Cycle
Sweep Time 0.01S~999.99S/Step
Setting range Starting position and Finishing position can be set arbitrarily.
Sweep Range Decided by Parameters setting.
VCO (Voltage Control Output)
Modulation signal
range to input
0~5V
VCO signal
frequency range
0-2000Hz
VCO control object
voltage controlling frequency (VCF), voltage controlling amplitude
(VCA), voltage controlling offset, voltage controlling duty cycle.
VCO special
function
Can Amplitude Modulate (AM) or Frequency Modulate (FM) by
external analog signal.
Modulation
Modulation Type AM, FM, PM, ASK, FSK, PSK
Carrier Waveform Sine, Square, Triangle, Ramp, Arbitrary waveform (Except DC)
AM
Source Internal (CH2) / External (VCO IN Port)
Modulating Waveform Sine, Square, Triangle, Ramp, Arbitrary waveform
Depth 0% to 120%
Modulating Frequency Internal : 1μHz~1MHz; External: 1μHz~2KHz;
FM
Source Internal (CH2) / External (VCO IN Port)
Modulating Waveform Sine, Square, Triangle, Ramp, Arbitrary waveform
Modulating Frequency Internal : 1μHz~1MHz; External: 1μHz~2KHz;
PM
FeelElec
FY6900 Series User’s Manual 45
Source Internal (CH2) / External (VCO IN Port)
Modulating Waveform Sine, Square, Triangle, Ramp, Arbitrary waveform
Phase Deviation 0° to 360°
Modulating Frequency Internal : 1μHz~1MHz; External: 1μHz~2KHz;
ASK
Source Internal (CH2), External (ASK IN Port), Manual
Modulating Waveform Square with 50% duty cycle.
Key Frequency 1μHz~10MHz
FSK
Source Internal (CH2), External (FSK IN Port), Manual
Modulating Waveform Square with 50% duty cycle.
Key Frequency 1μHz~10MHz
PSK
Source Internal (CH2), External (PSK IN Port), Manual
Modulating Waveform Square with 50% duty cycle.
Key Frequency 1μHz~10MHz
Burst Function
Carrier Waveform Sine, Square, Ramp, Arbitrary (except DC)
Burst Count 1~1048575
Trigger Source Manual, Internal, External (AC/DC)
General Specifications
Display Type 2.4 inch, TFT Color Display.
Save & Load
Amount 20
Position
01 to 20 (01 for start default value)
Interface
Type USB to Serial interface
Protocol
Command line mode, providing communication protocols.
Communicating Speed
9600bps (Industrial standard)
Power Voltage Range
AC100V~240V
Technic SMD, LSI, Reliable and durable
Buzzer Can be turned on/off by setting.
Operation Buttons and knob continuously.
Environment
Temp.: 0~40℃, Humidity: ﹤80%
Size 200mm * 190mm * 90mm (L * W * H)
Weight 850g
Package Size 25cm * 21cm * 10cm (L * W * H)
Package Weight
0.98kg(Main engine, accessories and packing materials)
FeelElec
46 FY6900 Series User’s Manual
FeelElec
FY6900 Series User’s Manual 47
Appendix
Appendix A：Safety Notes
1. Before using this instrument, please check if the power supply is normal, to
ensure the normal use and personal safety.
2. This instrument must be used in the technical index range.
3. Please do not change the instrument circuit arbitrarily, so as to avoid damaging
equipment or endangering the safety.
Appendix B：Warning and personal injury
Do not apply the product in the safety protection device or emergency stop
device, or any other applications that the product failure could result in personal
injury, unless there is special purpose or use authorization. Before the installation
and use, each parameter of the technical indexes in this manual should be
referred to. If this suggestion is not obeyed, death or serious personal injury could
be caused. In this condition the company will not be responsible for any
compensation of personal injury or death, and all the company managers and
employees and auxiliary agents, distributors, other personnel concerned will be
released from any claim (including all the costs, expenses, attorney fees etc.) that
may result in.
Appendix C：Accessories and Options
Description Quantity
Model
FY6900 Series DDS Signal Generator 1
Standard
Accessories
Power Cable 1
USB Data Cable 1
BNC-Clip Cable 2
BNC-BNC Cable 1
Warranty Card 1
Options
FYA2000 Series Amplifier
FPA1000 Series Amplifier
Note: Options can be ordered from local FeelElec distributors.
Appendix D：Warranty
FeelElec warrants that its products mainframe and accessories will be free
from defects in materials and workmanship within the warranty period. If a
product is proven to be defective within the respective period, FeelElec
guarantees the free replacement or repair of products which are approved
defective. This product enjoy 1 year warranty since its delivery. Damages caused
by misuse, vandalism, improper maintenance or force majeure are not covered by
the warranty. Any disassembly or amendment without permission will be deemed
giving up warranty rights consciously.
FY6900 Serial communication protocol FeelTech
飞逸科技 www.feeltech.net - 2
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Overview
The overall structure of control command using the command line, the
baud rate of fixed value 115200bps, the command issued by PC, the execution
machine analysis, each command marks the end to newline (sixteen
hexadecimal representations for "0x0a"). The execution machine will reply
0x0a after command executed. The following is a detailed description of the
different orders.
FY6900 Serial communication protocol FeelTech
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Communication Protocol Summary
Writing
Command
Command Line
Return
Reading
Command
Command
Line
Return
Code
Value
End
Mark
Code
End
Mark
Value
End
Mark
Output
Set waveform
of main wave
WMW
xxxxxxxx
0x0a
0x0a
Read
waveform of
main wave
RMW
0x0a
xxxxxxxx
0x0a
Set frequency
of main wave
WMF
xxxxxxxx
0x0a
0x0a
Read
frequency of
main wave
RMF
0x0a
xxxxxxxx
0x0a
Set amplitude
of main wave
WMA
xxxxxxxx
0x0a
0x0a
Read
amplitude of
main wave
RMA
0x0a
xxxxxxxx
0x0a
Set offset of
main wave
WMO
xxxxxxxx
0x0a
0x0a
Read offset of
main wave
RMO
0x0a
xxxxxxxx
0x0a
Set duty cycle
of main wave
WMD
xxxxxxxx
0x0a
0x0a
Read duty
cycle of main
wave
RMD
0x0a
xxxxxxxx
0x0a
Set phase of
main wave
WMP
xxxxxxxx
0x0a
0x0a
Read phase of
main wave
RMP
0x0a
xxxxxxxx
0x0a
Set On/Off of
main wave
output
WMN
xxxxxxxx
0x0a
0x0a
Read On/Off of
main wave
output
RMN
0x0a
xxxxxxxx
0x0a
Set waveform
of auxiliary
wave
WFW
xxxxxxxx
0x0a
0x0a
Read
waveform of
auxiliary wave
RFW
0x0a
xxxxxxxx
0x0a
Set frequency
of auxiliary
wave
WFF
xxxxxxxx
0x0a
0x0a
Read
frequency of
auxiliary wave
RFF
0x0a
xxxxxxxx
0x0a
Set amplitude
of auxiliary
wave
WFA
xxxxxxxx
0x0a
0x0a
Read
amplitude of
auxiliary wave
RFA
0x0a
xxxxxxxx
0x0a
Set offset of
auxiliary wave
WFO
xxxxxxxx
0x0a
0x0a
Read offset of
auxiliary wave
RFO
0x0a
xxxxxxxx
0x0a
Set duty cycle
of auxiliary
wave
WFD
xxxxxxxx
0x0a
0x0a
Read duty
cycle of
auxiliary wave
RFD
0x0a
xxxxxxxx
0x0a
Set phase of
auxiliary wave
WFP
xxxxxxxx
0x0a
0x0a
Read phase of
auxiliary wave
RFP
0x0a
xxxxxxxx
0x0a
Set On/Off of
auxiliary wave
output
WFN
xxxxxxxx
0x0a
0x0a
Read On/Off of
auxiliary wave
output
RFN
0x0a
xxxxxxxx
0x0a
FY6900 Serial communication protocol FeelTech
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Set trigger
mode of main
wave
WPF
xxxxxxxx
0x0a
0x0a
Read trigger
mode of main
wave
RPF
0x0a
xxxxxxxx
0x0a
Modulation
Set trigger
Source of main
wave
WPM
xxxxxxxx
0x0a
0x0a
Read trigger
Source of main
wave
RPM
0x0a
xxxxxxxx
0x0a
Set FSK
secondary
frequency of
main wave
WFK
xxxxxxxx
0x0a
0x0a
Read FSK
secondary
frequency of
main wave
RFK
0x0a
xxxxxxxx
0x0a
Set pulse
amount
triggered by
main wave
WPN
xxxxxxxx
0x0a
0x0a
Read pulse
amount
triggered by
main wave
RPN
0x0a
xxxxxxxx
0x0a
Generating
manual trigger
source
WPO
xxxxxxxx
0x0a
0x0a
Set the
Modulation
Rate of Main
Wave AM
WPR
xxxxxxxx
0x0a
0x0a
Read the
Modulation
Rate of Main
Wave AM
RPR
0x0a
xxxxxxxx
0x0a
Set FM
Modulation
Frequency
Offset of Main
Wave
WFM
xxxxxxxx
0x0a
0x0a
Read FM
Modulation
Frequency
Offset of Main
Wave
RFM
0x0a
xxxxxxxx
0x0a
Set PM
Modulation
Phase Offset of
Main Wave
WPP
xxxxxxxx
0x0a
0x0a
Read PM
Modulation
Phase Offset of
Main Wave
RPP
0x0a
xxxxxxxx
0x0a
Measurement
Set coupling
mode
WCC
xxxxxxxx
0x0a
0x0a
Reset Counter WCZ
xxxxxxxx
0x0a
0x0a
Pause the
measurement
WCP
xxxxxxxx
0x0a
0x0a
Set gate time of
measurement
WCG
xxxxxxxx
0x0a
0x0a
Read gate time
of
measurement
RCG
0x0a
xxxxxxxx
0x0a
Read
frequency of
external
measurement
RCF
0x0a
xxxxxxxx
0x0a
Read external
counting value
RCC
0x0a
xxxxxxxx
0x0a
FY6900 Serial communication protocol FeelTech
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Read external
counting period
RCT
0x0a
xxxxxxxx
0x0a
Read positive
pulse width of
external
measurement
RC+
0x0a
xxxxxxxx
0x0a
Read negative
pulse width of
external
measuremen
RC-
0x0a
xxxxxxxx
0x0a
Read duty
cycle of
external
measurement
RCD
0x0a
xxxxxxxx
0x0a
Sweep
Set sweep
object
SOB
xxxxxxxx
0x0a
0x0a
Set start data
of sweep
SST xxxxxxxx
0x0a
0x0a
Set end data of
sweep
SEN
xxxxxxxx
0x0a
0x0a
Set sweep time
STI xxxxxxxx
0x0a
0x0a
Set sweep
mode
SMO
xxxxxxxx
0x0a
0x0a
Set start-stop
of sweep
SBE
xxxxxxxx
0x0a
0x0a
Set signal
source of
sweep
SXY
xxxxxxxx
0x0a
0x0a
System Setting
Save
parameters of
current two
channels
USN
xxxxxxxx
0x0a
0x0a
Load
parameters
from storage
position
ULN
xxxxxxxx
0x0a
0x0a
Add
synchronization
mode
USA
xxxxxxxx
0x0a
0x0a
Read
synchronization
information
RSA
0x0a
xxxxxxxx
0x0a
Cancel
synchronization
mode
USD
xxxxxxxx
0x0a
0x0a
Set buzzer UBZ
xxxxxxxx
0x0a
0x0a
Read buzzer RBZ
0x0a
xxxxxxxx
0x0a
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on/off status
Set uplink
mode
UMS
xxxxxxxx
0x0a
0x0a
Read uplink
mode
RMS
0x0a
xxxxxxxx
0x0a
Set local uplink
status
UUL
xxxxxxxx
0x0a
0x0a
Read local
uplink status
RUL
0x0a
xxxxxxxx
0x0a
Read local ID UID 0x0a
xxxxxxxx
0x0a
Read local
Model
UMO
0x0a
xxxxxxxx
0x0a
●Detailed description of each command
1、Main waveform Parameter command
Set Main waveform Parameter：
1) WMW:set up main waveform form
Format:WMWxx+0x0a
Which "XX" represents the waveform of the 2 figures ,among:
WMW0 expressed as SINE
WMW1 expressed as Square
WMW2 expressed as Rectangle
WMW3 expressed as Trapezoid
WMW4 expressed as CMOS
WMW5 expressed as Adj-Pulse
WMW6 expressed as DC
WMW7 expressed as TRGL
WMW8 expressed as Ramp
WMW9 expressed as NegRamp
WMW10 expressed as Stair TRGL
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WMW11 expressed as Stairstep
WMW12 expressed as NegStair
WMW13 expressed as PosExponen
WMW14 expressed as NegExponen
WMW15 expressed as P-Fall-Exp
WMW16 expressed as N-Fall-Exp
WMW17 expressed as PosLogarit
WMW18 expressed as NegLogarit
WMW19 expressed as P-Fall-Log
WMW20 expressed as N-Fall-Log
WMW21 expressed as P-Full-Wav
WMW22 expressed as N-Full-Wav
WMW23 expressed as P-Half-Wav
WMW24 expressed as N-Half-Wav
WMW25 expressed as Lorentz-Pu
WMW26 expressed as Multitone
WMW27 expressed as Random-Noi
WMW28 expressed as ECG
WMW29 expressed as Trapezoid
WMW30 expressed as Sinc-Pulse
WMW31 expressed as Impulse
WMW32 expressed as AWGN
WMW33 expressed as AM
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WMW34 expressed as FM
WMW35 expressed as Chirp
WMW36 expressed as Impulse
WMW37 expressed as Arbitrary1
WMW38 expressed as Arbitrary2
……
WMW99 expressed as Arbitrary64
2) WMF: Set main waveform frequency
Format: WMFxxxxxxxxxxxxxx+0x0a
Which "xxxxxxxxxxxxxx" represents the frequency value of the 14 digits, the
frequency value is fixed to uHz as a unit, for example
v WMF1000000000 indicates that the setting frequency is 100Hz
v WMF000123456 indicates that the setting frequency is123.456mHz
v WMF000000001 indicates that the setting frequency is 1uHz.
3)WMA：To set the Amplitude of main waveform
Form as：WMAxx.xx+ 0x0a
Above “xx.xx” shows the amplitude value needed. For example:
WMA12.35 means the amplitude is set to 12.35V.
WMA0.35 means the amplitude is set to 0.35V.
4)WMO：To set the Offset of main waveform
Form as: WMOxx.xx+ 0x0a
Above “xx.xx” shows the offset value needed. For example:
WMO2.35 means the offset is set to 2.35V
WMO-2.35 means the offset is set to -2.35V
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5)WMD：To set the Duty Cycle of main waveform
Form as：WMDxx.x+ 0x0a
Above “xx.x” shows the duty cycle value represented by 3 digits. For example:
WMD50.1 means the duty cycle is set to 50.1%.
6)WMP：To set the Phase of main waveform
Form as: WMPxxx+ 0x0a
Above “xxx” shows the phase value needed. For example:
WMP123.4 means the phase is set to 123.4.
WMP4.5 means the phase is set to 4.5°.
7)WMN：To set the On/Off status of main wave output.
Form as：WMNx+ 0x0a
Above “x” shows On/Off status. Fox example:
WMN0 means main wave output is set to Off.
WMN1 means main wave output is set to On.
8) WMS：To set pulse period of main wave pulse
Form as：WMS xxxx+ 0x0a
Above “xxxx” shows pulse period. Unit is nS. For example:
WMN10000 means pulse period is 10000 nS.
Read Main Wave information
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1)RMW：Read waveform of main wave.
PC sends RMW + 0x0a ，
If the machine returns 0000000001, it means the current waveform is Square.
Details as follows:
0 SINE
1 Square
2 Rectangle
3 Trapezoid
4 CMOS
5 Adj-Pulse
6 DC
7 TRGL
8 Ramp
9 NegRamp
10 Stair TRGL
11 Stairstep
12 NegStair
13 PosExponen
14 NegExponen
15 P-Fall-Exp
16 N-Fall-Exp
17 PosLogarit
18 NegLogarit
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19 P-Fall-Log
20 N-Fall-Log
21 P-Full-Wav
22 N-Full-Wav
23 P-Half-Wav
24 N-Half-Wav
25 Lorentz-Pu
26 Multitone
27 Random-Noi
28 ECG
29 Trapezoid
30 Sinc-Pulse
31 Impulse
32 AWGN
33 AM
34 FM
35 Chirp
36 Impulse
37 Arbitrary Waveform 1
38 Arbitrary Waveform 2
……
99 Arbitrary Waveform 64
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2)RMF：Read frequency of main wave
PC sends RMF + 0x0a ，
If the machine returns 00010000.000000, it means the current frequency is
10KHz.
The unit of frequency is Hz.
3)RMA：Read the amplitude of main wave
PC sends RMA + 0x0a
If the instrument returns “00000010000”, it means the current amplitude is
10.000V
4)RMO：To read the offset of main waveform.
PC sends RMO + 0x0a ，
If the instrument returns “611”, it means the current offset is -0.389V.
If the instrument returns “16782”, it means the current offset is 6.782V.
(Calculating method instruction: If the return value is smaller than 10000, deduct
10000 from the return value. When the return value is bigger than 10000, deduct
10000 from the return value.)
5)RMD：To read the duty cycle of main waveform.
PC sends RMD + 0x0a ，
If the instrument returns 0000000689, it means the current duty cycle is 68.9%.
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6)RMP：To read the phase of main waveform.
PC sends RMP + 0x0a ，
If the instrument returns 2189, it means the current phase is 218.9°.
(7) RMN：To read the output status: enabled or disabled.
PC sends RMN + 0x0a ，
If the instrument returns 0, it means the main waveform output is disabled.
If the instrument returns 255, it means the main waveform output is enabled.
8) RSS：To read the pulse period of main wave pulse.
Format as：RSS + 0x0a
If the machine returns 10000, it means the pulse period is 10000 nS.
2、Parameter command of subsidiary waveform
To set parameter of subsidiary waveform
(1)WFW：To set the type of subsidiary waveform
Form as ：WFW xx+ 0x0a
Above “xx” represents the waveform type by 2 digits. i.e.：
WFW0 expressed as SINE
WFW1 expressed as Square
WFW2 expressed as Rectangle
WFW3 expressed as Trapezoid
WFW4 expressed as CMOS
WFW5 expressed as DC
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WFW6 expressed as TRGL
WFW7 expressed as Ramp
WFW8 expressed as NegRamp
WFW9 expressed as Stair TRGL
WFW10 expressed as Stairstep
WFW11 expressed as NegStair
WFW12 expressed as PosExponen
WFW13 expressed as NegExponen
WFW14 expressed as P-Fall-Exp
WFW15 expressed as N-Fall-Exp
WFW16 expressed as PosLogarit
WFW17 expressed as NegLogarit
WFW18 expressed as P-Fall-Log
WFW19 expressed as N-Fall-Log
WFW20 expressed as P-Full-Wav
WFW21 expressed as N-Full-Wav
WFW22 expressed as P-Half-Wav
WFW23 expressed as N-Half-Wav
WFW24 expressed as Lorentz-Pu
WFW25 expressed as Multitone
WFW26 expressed as Random-Noi
WFW27 expressed as ECG
WFW28 expressed as Trapezoid
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WFW29 expressed as Sinc-Pulse
WFW30 expressed as Impulse
WFW31 expressed as AWGN
WFW32 expressed as AM
WFW33 expressed as FM
WFW34 expressed as Chirp
WFW35 expressed as Impulse
WMW36 expressed as Arbitrary1
WMW37 expressed as Arbitrary2
……
WMW98 expressed as Arbitrary64
(2)WFF：To set the Frequency of subsidiary waveform
Form as：WFFxxxxxxxxxxxxxx + 0x0a
Above “xxxxxxxxxxxxxx” shows the frequency value represented by 14 digits.
The unit of frequency is fixed as uHz. For example:
WFF100000000 Means setting the frequency to 100Hz.
WFF000123456 Means setting the frequency to 0.123456Hz
WFF000000001 Means setting the frequency to 1uHz
(3)WFA：To set the Amplitude of subsidiary waveform
Form as：WFAxx.xx+ 0x0a
Above “xx.xx” shows the amplitude value needed. For example:
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WFA12.351 means the amplitude is set to 12.351V.
WFA0.352 means the amplitude is set to 0.352V.
(4)WFO：To set the Offset of subsidiary waveform
Form as：WFO xx.xx+ 0x0a
Above “xx.xx” shows the offset value needed. For example:
WFO 2.351 means the offset is set to 2.351V
WFO -2.352 means the offset is set to -2.352V
(5)WFD：To set the Duty Cycle of subsidiary waveform
Form as：WFD xx.x+ 0x0a
Above “xx.x” shows the duty cycle value represented by 3 digits. For example:
WFD50.1 means the duty cycle is set to 50.1%.
(6)WFP：To set the Phase of subsidiary waveform
Form as：WFPxxx+ 0x0a
Above “xxx” shows the phase value needed. For example:
WFP142.3 means the phase is set to 142.3°.
WFP4.5 means the phase is set to 4.5°.
(8)WFN：To enable/disable subsidiary waveform output.
Form as：WFNx+ 0x0a
Above “x” represents the status of enable/disable. For example:
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WFN0 means the subsidiary waveform output is disabled.
WFN1 means the subsidiary waveform output is enabled.
Read the information of subsidiary waveform：
(1)RFW：To read the type of subsidiary waveform.
PC sends RFW + 0x0a ，
If the instrument returns “1”, it means the current waveform is Square Wave.
Details as follows:
0 SINE
1 Square
2 Rectangle
3 Trapezoid
4 CMOS
5 DC
6 TRGL
7 Ramp
8 NegRamp
9 Stair TRGL
10 Stairstep
11 NegStair
12 PosExponen
13 NegExponen
14 P-Fall-Exp
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15 N-Fall-Exp
16 PosLogarit
17 NegLogarit
18 P-Fall-Log
19 N-Fall-Log
20 P-Full-Wav
21 N-Full-Wav
22 P-Half-Wav
23 N-Half-Wav
24 Lorentz-Pu
25 Multitone
26 Random-Noi
27 ECG
28 Trapezoid
29 Sinc-Pulse
30 Impulse
31 AWGN
32 AM
33 FM
34 Chirp
35 Impulse
36 Arbitrary Waveform 1
37 Arbitrary Waveform 2
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……
98 Arbitrary Waveform 64
(2)RFF：To read the frequency of subsidiary waveform.
PC sends RFF + 0x0a ，
If the instrument returns “00010000.000000” , it means the current frequency is
10KHz.
The unit of frequency value is Hz which is fixed.
(3)RFA：To read the amplitude of subsidiary waveform.
PC sends RFA + 0x0a ，
If the instrument returns “10000”, it means the current amplitude is 10.000V
(4)RFO：To read the offset of subsidiary waveform.
PC sends RFO + 0x0a ，
If the instrument returns “611”, it means the current offset is -0.389V.
If the instrument returns “16782”, it means the current offset is 6.782V.
(Calculating method instruction: If the return value is smaller than 10000, deduct
10000 from the return value. When the return value is bigger than 10000, deduct
10000 from the return value.)
(5)RFD：To read the duty cycle of subsidiary waveform.
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PC sends RFD + 0x0a ，
If the instrument returns 689, it means the current duty cycle is 68.9%.
(6)RFP：To read the phase of subsidiary waveform
PC sends RFP + 0x0a ，
If the instrument returns 1289, it means the current phase is 128.9°.
(8)RFN：To read the subsidiary output status: enabled or disabled.
PC sends RFN + 0x0a ，
If the instrument returns 0000000000, it means the subsidiary waveform output is
disabled.
If the instrument returns 0000000255, it means the subsidiary waveform output is
enabled.
3. Modulation correlation
(1) WPF: Setting up the main wave modulation mode
Format: WPFx + 0x0a
Where "x" is the modulation mode to be set, for example:
WPF0 indicates setting the main wave modulation mode to ASK
WPF1 indicates setting the main wave modulation mode to FSK
WPF2 indicates setting the main wave modulation mode to PSK
WPF3 indicates setting the main wave modulation mode as trigger
WPF4 indicates setting the main wave modulation mode to AM
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WPF5 indicates setting the main wave modulation mode to FM
WPF6 indicates setting the main wave modulation mode to PM
(2) RPF: Read Main Wave Modulation Mode
PC sends RPF + 0x0a, signal generator replies
0 denotes setting the main wave modulation mode to ASK
1 indicates setting the main wave modulation mode to FSK
2 indicates setting the main wave modulation mode to PSK
3 indicates setting the main wave modulation mode as trigger
4 indicates setting the main wave modulation mode to AM
5 indicates setting the main wave modulation mode to FM
6 indicates setting the main wave modulation mode to PM
(3) WPM: Setting up the main wave modulation source
Format: WPMx + 0x0a
Where "x" is the modulation source to be set, for example:
WPM0 means setting the modulation source as the second channel
(secondary wave)
WPM1 indicates setting the modulation source as an external AC
coupling channel
WPM2 indicates that the modulation source is set manually.
WPM3 indicates that the modulation source is set as an external DC
coupling channel.
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(4) RPM: Read the main wave modulation source
PC sends RPM + 0x0a, signal generator replies
0 means setting the modulation source as the second channel (secondary
wave)
1 indicates that the modulation source is set as an external AC coupling
channel
2 indicates that the modulation source is set manually
3 Represents setting the modulation source as an external DC coupling
channel
(5) WPN: Setting the number of main trigger pulses
The format is: WPNxxxxxxx + 0x0a
The maximum value of "xxxxxx" is 1048575, for example:
WPN10 indicates that 10 cycles of waveform will be output after
triggering.
(6) RPN: Number of trigger pulses read from the main wave
PC sends RPN + 0x0a.
If the machine returns to 0000000068, the number of trigger pulses
currently set is 68.
(7) WFK: Set the second frequency of FSK modulation
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The format is: WFK xxxxxxx.x+0x0a
Where "xxxxxxx.x" is the second frequency of the FSK that needs to be
set, for example:
WFK123.4 indicates that the second frequency of setting FSK
modulation is 123.4Hz.
(8) RFK: Read the second frequency of FSK modulation
PC sends RFK + 0x0a, such as signal generator reply
123.4 indicates that the second frequency of the set FSK modulation is
123.4Hz.
(9) WPO: Generating Manual Sources
Format: WPO + 0x0a
Each time the signal generator receives the instruction, it generates a
manual source.
(10) WPR: Setting AM modulation rate
Format: WPR x x x.x+0x0a
Where "x x x.x" is the modulation rate that needs to be set, for example:
WFK50.1 indicates that the AM modulation rate set is 50.1%.
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(11) RPR: Read AM Modulation Modulation Rate
PC sends RPR + 0x0a, such as signal generator reply
23.4 indicates that the modulation rate of AM modulation is 23.4%.
(12) WFM: Setting FM modulation frequency offset
The format is: WFM x xxxxxxx.x+0x0a
Where "xxxxxxx.x" is the frequency offset of FM that needs to be set,
for example:
WFM 123.4 indicates that the frequency offset of setting FM
modulation is 123.4Hz.
(13) RFM: Frequency offset for reading FM modulation
PC sends RFM + 0x0a, such as signal generator reply
6623.567 indicates that the frequency offset of the FM modulation set
is 6623.567Hz.
(14) WPP: Set PM modulation phase offset
Format: WPPxxx.xx+0x0a
Where "xxx.xx" is the required phase offset, for example:
WPP150.12 indicates that the set PM phase offset is 150.12 degrees.
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(15) RPP: Read FM modulation frequency offset
PC sends RPP + 0x0a, such as signal generator reply
66.56 indicates that the set PM phase offset is 66.56 degrees.
4、Measurement command
(1)RCF：Read frequency of external measurement
PC sends RCF + 0x0a ，
If the machine returns 0000000668 ,
When the gate time is 1s, the frequency result is 668Hz.
When the gate time is 10s, the frequency result is 66.8Hz.
When the gate time is 100s, the frequency result is 6.68Hz.
Note: Please read the gate time first before do this command to confirm
the magnitude.
(2)RCC：Read external counting value.
PC sends RCC + 0x0a ，
If the machine returns 0000000668 , it means the value counted is 668.
(3)WCZ：Reset the counter.
Form as：WCZx+ 0x0a
Above “x” means the object of reset. For example：
WCZ0 means reset the counter.
(4)WCP：Pause the measurement.
Form as：WCPx+ 0x0a
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Above “x” means the object of pause. For example：
WCP0 means pause the counter.
(5)RCT：Read the external counting period.
PC sends RCT + 0x0a ，
If the machine returns 0000060668, it means the counting period is 60668ns.
(6)RC+：Read width of positive pulse of external measurement.
PC sends RC+ + 0x0a ，
If the machine returns 0000060668, it means the width of positive pulse is
60668ns.
(7)RC-：Read width of positive pulse of external measurement.
PC sends RC- + 0x0a ，
If the machine returns 0000060668, it means the width of negative pulse is
60668ns.
(8)RCD：Read the duty cycle of external measurement.
PC sends RCD + 0x0a ，
If the machine returns 0000000668, it means the duty cycle of external
measurement is 66.8%.
(9)WCG：Set the gate time of measurement.
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Form as：WCG x+ 0x0a
Above “x” means the gate time needed. For example:
WCG0 Means gate time is set to 1s
WCG1 Means gate time is set to 10s
WCG2 Means gate time is set to 100s
(10)RCG：Red the gate time of measurement.
PC sends RCT + 0x0a ，
If the machine returns 0000000000, It means the gate time is 1s.
Details as:
0 Means the gate time current is 1s.
1 Means the gate time current is 10s.
2 Means the gate time current is 100s.
(11)WCC：Set the coupling mode of measurement.
Form as：WCC x+ 0x0a
Above “x” is the coupling mode needed. For example:
WCC0 means set the coupling mode is set to DC coupling.
WCC1 means set the coupling mode is set to AC coupling.
5、Sweep command
(1)SOB：Set the object of sweep.
Form as：SOBx+ 0x0a
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Above “x” is the object needed of sweep. For example：
SOB0 means set the frequency to be object.
SOB1 means set the amplitude to be object.
SOB2 means set the offset to be object.
SOB3 means set the duty cycle to be object.
(2)SST：Set the start position of sweep.
1、When the sweep object is frequency, the unit is Hz.
Form as：SSTxxxxxxx.x+ 0x0a
For example:
SST1000.0 means the start frequency is 1000.0Hz
2、When the sweep object is amplitude, the unit is V.
Form as：SSTxx.xxx+ 0x0a
For example:
SST10.001 means the start amplitude is 10.001V
3、When the sweep object is offset, the unit is V.
Form as：SSTxx.xxx+ 0x0a
For example:
SST-6.000 means the start offset is -6.000V.
4、When the sweep object is duty cycle, the unit is %.
Form as：SSTxx.x+ 0x0a
For example:
SST68.9 means the start duty cycle is 68.9%.
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When the value input is higher than max value, the machine will keep the max
value.
(3)SEN：Set the sweep end position.
1、When the sweep object is frequency, the unit is Hz.
Form as：SENxxxxxxx.x+ 0x0a
For example:
SEN1000.0 means the end frequency is 1000.0Hz.
2、When the sweep object is amplitude, the unit is V.
Form as：SENxx.xxx+ 0x0a
For example:
SSN10.000 means the end amplitude is 10.000V.
3、When the sweep object is offset, the unit is V.
Form as：SENxx.xxx+ 0x0a
For example
SEN-6.000 means the end offset is -6.000V
4、When the sweep object is duty cycle, the unit is %.
Form as：SENxx.x+ 0x0a
For example:
SSN68.9 means the end duty cycle is 68.9%
Note: When the value input is higher than max value, the machine will keep the max
value.
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(4)STI：Set the sweep time
Form as：STIxxx.xx+ 0x0a
Above “xxx.xx” means the sweep time needed. For example:
STI68.9 means the sweep time is set to 68.9s
(6)SMO：Set the sweep mode
Form as：SMO x+ 0x0a
Above “x” is the sweep mode needed. For example:
SMO0 means the sweep mode is linear sweep.
SMO1 means the sweep mode is log sweep.
(7)SBE：Set the sweep on/off.
Form as：SBEx+ 0x0a
Above “x” means the on/off status of sweep. For example:
SBE0 Set the sweep turned off.
SBE1 Set the sweep turned on.
(8) SXY：Set the control source of sweep.
Form as：SXY x+ 0x0a
Above “x” means the control source of sweep. For example：
SXY0 means the control source is time.
SXY1 means the control source is analog signal input from VCO IN terminal.
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5、System Setting command
(1)USN: Save the parameters of current two channels (Frequency, amplitude, offset,
duty cycle, waveform and so on) to a certain position.
Form as：USNxx+ 0x0a
Above “xx” means the saving position. For example:
USN06 means save current parameters to position 6.
USN01 means save current parameters to position 1.
Note: If the position 1 has data saved, the machine will load these data when
start-up.
(2)ULN: Load the parameters of current two channels (Frequency, amplitude, offset,
duty cycle, waveform and so on) from a certain position.
Form as：ULNxx+ 0x0a
Above “xx” means the position needed to load. For example:
ULN06 means load parameters from position 6.
ULN01 means load parameters from position 1.
Note: If the position 1 has data saved, the machine will load these data when
start-up. If the position needed to load doesn’t have data saved, the machine will
not load. It will maintain current parameters.
(3)USA: Add synchronization mode.
Form as：USAx+ 0x0a
Above “x” means the synchronization object. For example：
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USA0 means set the waveform of second channel synchronized with first
channel.
USA1 means set the frequency of second channel synchronized with first
channel.
USA2 means set the Amplitude of second channel synchronized with first
channel.
USA3 means set the offset of second channel synchronized with first channel.
USA4 means set the duty cycle of second channel synchronized with first
channel.
Note: Synchronization function is not available in sweep status.
(4)USD: Cancel synchronization mode
Form as：USDx+ 0x0a
Above “x” means the synchronization object. For example：
USD0 means cancel the waveform of second channel synchronized with first
channel.
USD1 means cancel the frequency of second channel synchronized with first
channel.
USD2 means cancel the amplitude of second channel synchronized with first
channel.
USD3 means cancel the offset of second channel synchronized with first
channel.
USD4 means cancel the duty cycle of second channel synchronized with first
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channel.
(5)RSA: Read synchronization information.
Form as：RSAx+ 0x0a
Above “x” means the synchronization object needs to read.
RSA0 means read the waveform synchronization information.
RSA1 means read the frequency synchronization information.
RSA2 means read the amplitude synchronization information.
RSA3 means read the offset synchronization information.
RSA4 means read the duty synchronization information.
If the machine returns 0, it means the object synchronization is disabled.
If the machine returns 255, it means the object synchronization is enabled.
For example：PC sends RSA2+ 0x0a ，
If the machine returns 0, it means the amplitude synchronization is disabled.
If the machine returns 255, it means the amplitude synchronization is disabled.
(5)UBZ：Set the buzzer on/off
Form as：UBZx+ 0x0a
Above “x” means the on/off status of buzzer. For example:
UBZ0 means turn off the buzzer.
UBZ1 means turn on the buzzer.
(5)RBZ：Read the buzzer on/off status.
FY6900 Serial communication protocol FeelTech
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Form as：RBZ+ 0x0a
For example：PC sends RBZ+ 0x0a ，
If the machine returns 0, it means the buzzer is disabled.
If the machine returns 255, it means the buzzer is enabled.
(6) UMS：To set the uplink mode.
Form as：UMSx+ 0x0a
Above “x” represents the uplink mode. For example:
UMS0 means setting the instrument as master machine.
UMS1 means setting the instrument as slave machine.
(6 RMS：To read the uplink mode.
Form as：RMS+ 0x0a
For example：PC sends RMS+ 0x0a ，
If the instrument returns 0, it means it is master machine in uplink.
If the instrument returns 255, it means it is slave machine in uplink.
(7) UUL：To turn on/off unlink function.
Form as：UMLx+ 0x0a
Above “x” represents the on/off status of uplink. For example:
UML0 means turning off the uplink function.
UML1 means turning on the uplink function.
FY6900 Serial communication protocol FeelTech
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(7) RUL：To read the uplink on/off status.
Form as：RUL+ 0x0a
For example：PC sends RUL+ 0x0a ，
If the instrument returns 0, it means the uplink function is in off status.
If the instrument returns 255, it means the uplink function is in on status.
(8) UID：To read the ID number of the instrument.
PC sends UID + 0x0a ，
The instrument returns its ID number.
(9) UMO：To read the model of the instrument.
PC sends UMO + 0x0a ，
The instrument returns its model.
NOTE: Feeltech reserves the right to modify all protocol without notice
Please download latest communication protocol from our website:
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