316 Keysight InfiniiVision 1200 X-Series and EDUX1052A/G Oscilloscopes User's Guide
29 UART/RS232 Triggering and Serial Decode
3 Press the Trigger Type softkey; then, turn the Entry knob to select the serial slot
(Serial 1) on which the UART/RS232 signals are being decoded.
4 Press the Trigger Setup softkey to open the UART Trigger
menu.
5 Press the Base softkey to select Hex or ASCII as the base
displayed on the Data softkey in the UART Trigger menu.
Note that the setting of this softkey does not affect the
selected base of the decode display.
6 Press the Trigger softkey and set up the desired trigger
condition:
• Rx Start Bit — The oscilloscope triggers when a start bit
occurs on Rx.
• Rx Stop Bit — Triggers when a stop bit occurs on Rx. The
trigger will occur on the first stop bit. This is done
automatically whether the device under test uses 1, 1.5, or
2 stop bits. You do not need to specify the number of stop
bits used by the device Under test.
• Rx Data — Triggers on a data byte that you specify. For use
when the device under test data words are from 5 to 8 bits
in length (no 9th (alert) bit).
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