multicomp pro MP720021, Manual

Page: 61 / 154

User Manual
56

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 rotary control to select from the Baud list on
the left.
Custom
Baud
Turn the M rotary control (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.
ASCII
Table
ON
OFF
Select "ON" to display the ASCII table.
2. I2C Decoding
To decode I2C signal:
(1)
Connect the clock line (SCLK) and the data line (SDA) of the I2C signal to the
Signal Input Channels of the oscilloscope.
(2)
Adjust to the proper time base and voltage division.
(3)
In trigger menu, select Bus trigger, and select bus type as I2C, set parameters
based on the characteristics of the signal,
trigger the signal correctly and obtain
stable display. Refer to " I2C Trigger " on page 51.