Fractional-N Spur Avoidance And Fm Sideband Adjustment - Agilent Technologies 8753ES Option 011 Service Manual

Fractional-N Spur Avoidance and FM Sideband
Adjustment
This adjustment minimizes the spurs caused by the API (analog phase interpolator, on the
fractional-N assembly) circuits. It also improves the sideband characteristics.
Analyzer warmup time: 30 minutes.
Required Equipment and Tools
Description
Spectrum analyzer
Power splitter
Attenuator 10 dB
BNC cable
GPIB cable
RF cable set
Non-metallic adjustment tool
TORX screwdriver T-15
Antistatic wrist strap
Antistatic wrist strap cord
Static-control table mat and earth ground wire
Procedure
1. Connect the equipment as shown in
2. Make sure the instruments are set to their default GPIB addresses:
network analyzer = 16, spectrum analyzer = 18.
Chapter 3

Fractional-N Spur Avoidance and FM Sideband Adjustment

HP/Agilent Part or Model Number
8563E
11667A Option 001
8491A Option 010
8120-1840
10833A/B/C/D
11851B
8830-0024
9300-1367
9300-0980
9300-0797
Figure 3-22.
Adjustments and Correction Constants
3-47