346 Keysight N9038A MXE Service Guide
Analog & Digital IF
A3 Digital I.F. Troubleshooting
Trigger Outputs
1. Connect an oscilloscope with a 1 M Ω input impedance to the Trigger 1
Out on the rear panel of the instrument as illustrated in Figure 10-13.
2. Tune the oscilloscope to measure 1 Volt per division vertically and 200 µs
per division horizontally.
3. Turn the instrument self-alignment routine off by pressing System,
Alignments, Auto Align, Off.
4. Reduce the instrument span to 100 MHz by pressing Span, 100 MHz.
5. Verify that the Trigger 1 Out is configured for Sweeping by pressing
Input/Output, More, Output Config, Trig 1 Out, Sweeping (HSWP).
6. Verify that the there is a signal on the oscilloscope screen who's voltage
and width resembles that shown in Figure 10-15.
Figure 10-15 A3 Digital IF Trigger Output
This procedure outlines the verification of Trigger 1 Out but it could just as easily be used for
Trigger 2 Out if there is a problem reported with that output.
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