Keysight CXG, EXG, and MXG X-Series Signal Generators Service Guide 137
Troubleshooting
Unleveled Issues
Figure 6-1 I/Q Modulator Cable and Port Locations
9. Inspect both W7 (W14, W15, and W16 if option 012 is installed) and W8
and replace them if any damage is detected.
If the cables are not damaged, or new ones do not resolve the unlevel
condition, proceed to step 12.
10.Referring to Figure 6-1, connect a short RF cable between A3 J2003 and
A3 J2004.
11.Verify that the Unlevel condition is gone.
— If the Unlevel condition is gone replace the A2 Vector BBG
assembly.
— If the Unlevel condition persists replace the A3 RF assembly.
N5173B, N5183B
The N5173B and N5183B instruments have the ability to be hardware leveled
by either the internal ALC detectors or an external detector. Whether using
internal or external leveling there are band breaks in the ALC circuitry that will
need to be considered that will make the isolating of any unleveled condition a
little easier. The selection for internal and external leveling is found under the
AMPTD, Leveling Control, Leveling Mode menu.
Internal Leveling
The different band breaks for internal leveling are:
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