142 Keysight CXG, EXG, and MXG X-Series Signal Generators Service Guide
Troubleshooting
Unleveled Issues
1. Return the instrument to a known state by pressing Preset.
2. Tune the signal generator to a frequency that is causing the unlevel
condition by pressing FREQ, <frequency> GHz.
3. Turn the RF on by pressing RF On/Off so that the LED below it comes on.
4. Verify that the unlevel indicator is on.
5. Referring to Figure 6-3, remove W21 from A3 J2004.
Figure 6-3 3.2 GHz and Higher Internal ALC Leveling Loop
6. Connect a spectrum analyzer to A3 J2004 with the following settings:
— Span = 20 MHz
— Reference Level = +10.0 dBm
7. Since the frequency of the signal coming from the A3 RF assembly at A3
J2004 will be multiplied by the A7 Micro-Deck assembly, the center
frequency that the spectrum analyzer will need to be tuned to will have to
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