10 Serial Decode/Lister
332 InfiniiVision Oscilloscopes User’s Guide
8 Make sure the trigger or threshold levels are set to the middle of the signals:
• For analog channels, turn the Trigger Level knob.
• For digital channels, press the [D15-D0] key and the Thresholds softkey to access
the threshold level setting softkeys.
9 If the decode line does not appear on the display, press the up arrow softkey to return
to the previous menu, then press the Decode softkey to turn on serial decode.
10 If the oscilloscope is stopped, press the [Run/Stop] key to acquire and decode data.
You can use the Zoom horizontal sweep mode for easier navigation of the acquired data.
If the setup does not produce a stable trigger, the UART/RS232 signal 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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