Keysight Technologies X Series Service Manual page 152

Troubleshooting
Amplitude Modulation Issues (Option UNT)
Figure 6-8 Amplitude Modulation Drive Location – A7A1 Test Point 40
11.Setup the oscilloscope as follows:
12.A signal like that shown in
Figure 6-9 Amplitude Modulation Drive Signal – A7A1 Test Point 40
13.If either no signal is seen on the oscilloscope, or the level is less than
152
— Amplitude scale = 500 mv/div
— Horizontal scale = 1 ms/div
screen.
2.5 Vpp proceed to step 14.
Keysight CXG, EXG, and MXG X-Series Signal Generators Service Guide
Figure 6-9 should be seen on the oscilloscope