Agilent Technologies 8753ES Option 011 Service Manual page 158

Adjustments and Correction Constants
Fractional-N Spur Avoidance and FM Sideband Adjustment
Figure 3-22 Fractional-N Spur Avoidance and FM Sideband Adjustment Setup
3. Set the spectrum analyzer measurement parameters as follows:
Reference Level
Resolution Bandwidth
Center Frequency
Span
4. On the network analyzer, press
CW FREQ
676.045105
5. Remove the upper-rear corner bumpers and the top cover, using a torx screwdriver.
6. Adjust the 100 kHz (R77) for a null (minimum amplitude) on the spectrum analyzer.
The minimum signal may, or may not, drop down into the noise floor.
3-48
0 dBm
100 Hz
676.145105 MHz
2.5 kHz
Preset Avg
.
M/µ
IF BW
3000 x1 Sweep Setup
Chapter 3