Keysight CXG, EXG, and MXG X-Series Signal Generators Service Guide 139
Troubleshooting
Unleveled Issues
Figure 6-2 Less Than 3.2 GHz Internal ALC Leveling Loops
8. Connect a spectrum analyzer to A3 J2002 with the following settings:
— Center Frequency = 1 GHz
— Span = 20 MHz
— Reference Level = +20.0 dBm
9. Measure the level of the 1 GHz output on the spectrum analyzer.
— If the signal level does not measure at least -10 dBm replace the A3
RF assembly.
— If the signal level measures greater than -10 dBm proceed to
step 10.
10.Connect a DC voltmeter to the loose end of W23.
11.Verify that the DC voltage measured at the output of W23 is at least +10V.
— If the DC voltage measures at least +10V proceed to step 12.
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