Chapter 12 Protocol Decoding RIGOL
MSO8000 User Guide 12-9
RS232 decoding function (set the corresponding RS232 decoding parameters
automatically). For source channels, copy the source channel of the trigger to
the Tx source channel of the decoding. For analog channels, the threshold level
settings will also be copied.
3． Set the baud rate
Three setting methods are available for baud rate:
âš« Press Baud, then set the user-defined baud rate with the displayed numeric
keypad.
âš« Press Baud, then select the preset baud rate from the available options.
The available baud rates include 50 bps, 75 bps, 110 bps, 134 bps, 150 bps,
300 bps, and etc.
âš« Press Baud, then rotate the multifunction knob to adjust the baud rate
at a small step size. The step size is different for adjusting different baud
rates.
4． Source setting
Press Sources to enter the source setting menu.
âš« Set the Tx source and the threshold
➢ Press Tx and rotate the multifunction knob to select the desired
channel, and then press down the knob. You can also press Tx
continuously or enable the touch screen to select it. The available
channels include OFF, CH1-CH4, and D0-D15.
➢ When you select the analog channel (CH1-CH4), press Threshold,
then rotate the multifunction knob or use the pop-up numeric
keypad to adjust the threshold of Tx source. When you modify the
threshold of the Tx source channel, a dotted line displaying the current
threshold level is displayed on the screen. The dotted line disappears in
about 2 s after you stop modifying the threshold.
âš« Set the Rx source and the threshold
Use the same method to select the Rx source and set the threshold (only
when the Rx source channel is set to an analog channel (CH1-CH4)).
Note: The Tx and Rx source channels cannot be set to "OFF" at the same time.
âš« Polarity
Press Polarity continuously to select the polarity of data transmission. It
can be set to " " (positive) or " " (negative).
➢ Normal: Use negative logic. High level indicates logic "0"; low level
indicates logic "1".
➢ Invert: Use positive logic. High level indicates logic "1"; low level
indicates logic "0".
5． Set data package
Press Settings to enter the data package setting menu.
âš« Data
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