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4.Advanced User Guidebook
Mode
Holdoff
Auto
Normal
Single
Holdoff
Reset
Acquire waveform even no trigger occurred
Acquire waveform when trigger occurred
When trigger occurs, acquire one waveform then stop
100 ns - 10 s, adjust M knob or click to set time
interval before another trigger occur, press
panel button or click move cursor to choose
which digit to be set.
Set Holdoff time as 100 ns
Bus Trigger
1. RS232 Trigger
RS232 is a serial communication mode used in the data transmission between PCs or
between PC and Terminal. A character is transmitted as a frame of data which consist
of 1bit start bit, 5-8bits data bits, 1bit check bit and 1-2 stop bits.
In RS232 bus trigger mode, the trigger setting information is displayed on bottom
right of the screen, for example, ，indicates that trigger type
is RS232, CH1 trigger level is 0.00mV.
Format as shown in the figure below,
RS232 Trigger
RS232 Trigger menu list:
MENU
SETTING
INSTRUCTION
Bus Type RS232 Set vertical channel bus type as RS232 trigger.
Input
Sour
ce
CH1
Select CH1 as the trigger source.
Select CH2 as the trigger source.
CH2
Pola
rity
Nor
mal
Select polarity of data transmission as Normal. Select
polarity of data transmission as Inverted.
Inve
rted
When Start
Trigger on the start frame of position. After choosing
this condition, press Configure to enter detailed
settings.
51
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