200 6000 Series Oscilloscope User’s Guide
4 Triggering the Oscilloscope
3Press the Signals softkey to display the UART/RS232 signals
menu.
4Connect an oscilloscope channel to the Rx signal in the
circuit under test (the target system), then press the Rx
softkey and rotate the Entry knob to select the channel.
As you press the Rx softkey (or rotate the Entry knob on
mixed-signal oscilloscopes), the channel you select is shown
in the upper-right corner of the display next to “URT”.
5Make sure the trigger or threshold levels are set to the middle
of the signal:
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.
The value of the trigger level or digital threshold is displayed
in the upper-right corner of the display.
6Repeat these two steps for the Tx signal.
7Press the up arrow key to return to the previous menu.
Rx
channel
Tx
channel
Return to
previous menu