320 Keysight N9038A MXE Service Guide
Reference Assembly
A16 Reference Assembly Troubleshooting
Wideband IF Reference
1. Disconnect Cable W51 from A16J718 as shown in Figure 9-3.
2. Verify with a spectrum analyzer that the frequency and amplitude of the
2nd LO (Low Band) signal at A16J718 is equal to that specified for it in
Table 9-3, as shown in Figure 9-12.
Figure 9-12 A16 Reference Assembly 2nd LO (Low Band)
If any of the signals that are generated on the A16 Reference assembly are
not of the proper frequency or amplitude the most probable cause of the
problem is likely to be the A16 Reference assembly itself, as long as the
A6 Power Supply assembly is functioning properly. See Chapter 12,
“Power Supply & Midplane” if there are any questions about this.
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