Agilent Technologies 8753ES Option 011 Service Manual page 159

Figure 3-23 Location of API and 100 kHz Adjustments
7. On the spectrum analyzer, set the center frequency for 676.051105 MHz.
8. On the analyzer, press
9. Adjust the API1 (R35) for a null (minimum amplitude) on the spectrum analyzer.
10.On the spectrum analyzer, set the center frequency for 676.007515 MHz.
11.On the analyzer, press
12.Adjust the API2 (R43) for a null (minimum amplitude) on the spectrum analyzer.
13.On the spectrum analyzer, set the center frequency for 676.003450 MHz.
14.On the analyzer, press
15.Adjust the API3 (R45) for a null (minimum amplitude) on the spectrum analyzer.
16.On the spectrum analyzer, set the center frequency for 676.003045 MHz.
17.On the analyzer, press
18.Adjust the API4 (R47) for a null (minimum amplitude) on the spectrum analyzer.
In Case of Difficulty
19.If this adjustment cannot be performed satisfactorily, repeat the entire procedure, or
replace the A13 board assembly.
Chapter 3
Fractional-N Spur Avoidance and FM Sideband Adjustment
CW FREQ
Sweep Setup
Sweep Setup CW FREQ
Sweep Setup CW FREQ
CW FREQ
Sweep Setup
Adjustments and Correction Constants
.
676.048105 M/µ
.
676.004515 M/µ
.
676.00045 M/µ
.
676.000045 M/µ
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