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Description of this Upgrade
Step 18. Perform Post-Upgrade Adjustments and Calibration
Step 18. Perform Post-Upgrade Adjustments and Calibration
Adjustments
The following adjustments must be made due to the hardware changes of the
analyzer.
IMPORTANT!
The 10 MHz reference crystal oscillator is the most accurate after running
for three hours. The 10 MHz Frequency Reference Adjustment can be run
after the PNA has warmed up for 90 minutes, and the other adjustments
can be completed in the order presented, but then the 10 MHz Frequency
Reference Adjustment should be repeated after the PNA has been able to
warm up for three hours.
— EE default adjustment
Figure 16 J4 Src1, J5 Src2, J6 LO/LO NF, and J7 XSB
1. Option XSB (Source 3) is only orderable on instruments with Option 422/423.
Installation Note N5225-90143
PNA EE Adjustment & Initialization Sub–steps:
Refer to
Figure 16
and
1. Initialize Synth LO, Synth Src1, Synth Src2
2. Adjust Synth LO, Synth Src1, Synth Src2
Figure 17 on page
40.
1
Connector Locations
39
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