Automatic Level Control Section; Function Generator / Trigger Control Section - Keysight Technologies X Series Service Manual

RF Assembly
A3 RF Assembly Troubleshooting
Before replacing an A3 RF assembly for a RF Output section Self Test failure be
sure run the
be sure to verify the power supply voltages by seeing the
Status Quick-Check"
RF Output Related Adjustments
There are seven RF Output section related adjustments in the performance
verification and adjustment software. They are:
1. ALC Linearity Calibration
2. Absolute Power Calibration
3. Op Amp Band Power Calibration
4. ALC Calibration
5. Attenuator Calibration
6. Open Loop Power Calibration
7. Op Amp Band Attenuator Calibration

Automatic Level Control Section

If there are any ALC issues, see
"Troubleshooting"

Function Generator / Trigger Control Section

There are three section in the Function Generator / Trigger Control Section that
will be covered in this section. They are:
— LF Function Generator
— Trigger Control
Keysight CXG, EXG, and MXG X-Series Signal Generators Service Guide
"RF Output Related Adjustments"
section in
This adjustment is used to linearize the ALC circuitry.
This adjustment is used to find the power level associated with the mid
vernier point. It also finds the correction factors for the 0 and 5 dB
attenuator steps.
This adjustment is used to set the Op-Amp band power gain and offset
values.
This adjustment is used to fill the power versus ref DAC lookup table.
This adjustment is used to find the amplitude correction for each
attenuator step.
This adjustment is used to align the ALC open loop performance with the
closed loop accuracy.
This adjustment is used to find the amplitude correction for each
attenuator step in the Op-Amp band.
listed later in this section. Also,
Chapter 8, "Power Supply"
"Unleveled Issues" in Chapter 6,
"Power Supply
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