428 Agilent InfiniiVision 3000 X-Series Oscilloscopes User's Guide
28 UART/RS232 Triggering and Serial Decode
• When #Bits is set to 9 in the UART/RS232 Bus Configuration Menu,
the 9th (alert) bit is displayed directly to the left of the ASCII value
(which is derived from the lower 8 bits).
4 Optional: Press the Framing softkey and select a value. In the decode
display, the chosen value will be displayed in light blue. However, if a
parity error occurs the data will be displayed in red.
5 If the decode line does not appear on the display, press the [Serial] key
to turn it on.
6 If the oscilloscope is stopped, press the [Run/Stop] key to acquire and
decode data.
You can use the horizontal Zoom window for easier navigation of the
acquired data.
See Also • "Interpreting UART/RS232 Decode" on page 429
• "UART/RS232 Totalizer" on page 430
• "Interpreting UART/RS232 Lister Data" on page 431
• "Searching for UART/RS232 Data in the Lister" on page 431
If the setup does not produce a stable trigger, the UART/RS232 signals may be slow
enough that the oscilloscope is AutoTriggering. Press the [Mode/Coupling] key, then
press the Mode softkey to set the trigger mode from Auto to Normal.
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