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4.Advanced User Guidebook
(3) In trigger menu, select Bus trigger, and select bus type as RS232, set parameters
based on the characteristics of the signal, trigger the signal correctly and obtain
stable display. Refer to "RS232 Trigger" on page 51.
(4) Push the Decode button on the front panel. Select bus type as RS232. set
parameters based on the characteristics of the signal. When the parameters are set
correctly, the information carried by the signal will be displayed.
Tip: If there are repetitive menu items in both trigger menu and decoding menu, you
can set anyone of them, the other will be changed synchronously.
Note:
Use the Trigger Level knob to adjust the thresholds of bus trigger and bus
decoding.
When decoding, if "Parity" is not set to "None", and the check bit error is
detected, two red error marks will be displayed in the corresponding position in
the waveform.
RS232 Decoding menu list:
MENU
SETTING
INSTRUCTION
Bus Type RS232 Set bus type of decoding as RS232.
Configure
Common
Baud
Turn the M knob to select from the Baud list on the left.
Custom
Baud
Turn the M knob (or tap on in touchscreen) to set
the Baud. The range is 50 to 10,000,000.
Tip: You can select the nearest value in Common Baud,
and then adjust it in this menu.
Data Bits
Set the data width of each frame to match the signal. It
can be set to 5, 6, 7 or 8.
Parity
set the even-odd check mode
to match the polarity used
by the signal.
Display
Format
Binary
Decimal
Hex
ASCII
Set the display format of the bus.
EventTable
ON
OFF
Select "ON" to display the event table.
Save
EventTable
If a USB storage device is currently connected to the
instrument, save the event table data
in a .csv
(spreadsheet) formatted file on the external USB storage
device.
57
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