Testing Option 1Ds (Preamp) - Agilent Technologies PSA Series Manual

PSA Functional Tests
Amplitude Accuracy at 50 MHz

Testing Option 1DS (Preamp)

Instruments containing Option 1DS must have the preamp function turned on and tested.
In order to enable this function, press
Procedure
1. Connect the 20 dB pad between the input of the spectrum analyzer and the power
splitter, as shown in
2. Set the synthesized sweeper amplitude to the value listed in the Nominal Source
Amplitude column in
3. Assure the spectrum analyzer input attenuation is set to 10 dB.
4. Set the Res BW and Span as listed in
5. Record the source amplitude, as measured by the power meter, in the Power Meter
Amplitude column of
6. On the spectrum analyzer, press
7. Wait for the analyzer to finish averaging.
8. Record the signal amplitude as measured by the analyzer in the measured amplitude
column of Table 3-2.
9. Calculate the signal amplitude accuracy using the following equation:
Amplitude Accuracy Error = Meas_amp + 20 dB − Power_meter
10.Record the results under the Amplitude Accuracy Error column of
Table 3-2 Amplitude Accuracy Results (Option 1DS)
Nominal
Preamp
Source
(Option
Amplitude
1DS)
(dBm)
−13
On
124
Amplitude
Figure 3-1..
Table 3-2.
Table
Table 3-2.
,
Restart Peak Search
Measured
Res BW Span Amplitude
Meas_amp
(kHz) (kHz) (dBm)
1 106
, ,
More 1 of 3 Int Preamp
3-2.
.
Table
Power Meter Amplitude
Amplitude Accuracy
Power_meter
(dBm)
(On).
3-2.
Test Limit
Error
(dB) (dB)
1.2
Chapter 3