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2
Adjustment Procedures
Introduction
This chapter contains information on automated and manual adjustment procedures. Perform
the automated procedures using the HP 85629B test and adjustment module (TAM). Never
perform adjustments as routine maintenance. Adjustments should be performed after a repair
or performance test failure. Refer to Table 2-l to for which adjustments to perform.
Automated Procedures
Using the TAM
Front End Cal (adjustment)
Manual Procedures
1. High Voltage Power Supply Adjustment
2. Display Adjustment
3. IF
Bandpass
Adjustment
4. IF Amplitude Adjustments
5. DC Log Amplifier Adjustments
6. Sampling Oscillator Adjustment
7. YTO Adjustment
8. LO Distribution Amplifier Adjustment
9. Frequency Response Adjustment
10. Calibrator Amplitude Adjustment
11. 10 MHz Reference Adjustment-OCXO
12. 10 MHz Reference Adjustment-TCXO (Option 103)
13. Demodulator Adjustment
14. External Mixer Bias Adjustment
15. External Mixer Amplitude Adjustment
16. YIG-Tuned Filter/Mixer (RYTHM) Adjustment
17. 16 MHz PLL Adjustment
18. 600 MHz Reference Adjustment
Note
Before performing any adjustments, allow the spectrum analyzer to warm up
for at least 5 minutes.
Adjustment Procedures 2-1