Testing Preamp Option (P03, P08, P13, P26) - Keysight n9020a Service Manual

Functional Tests
Amplitude Accuracy at 50 MHz

Testing Preamp Option (P03, P08, P13, P26)

Instruments containing Options P03, P08, P13, P26 must have the preamp
function turned on and tested.
Procedure
1. On the analyzer, press AMPTD Y Scale, More, Internal Preamp, Low Band.
2. Connect the equipment as shown in
3. Set the synthesized sweeper amplitude to the value listed in the Nominal
4. Set the signal analyzer input attenuation to 0 dB.
5. Set the Span as listed in
6. Record the source amplitude, as measured by the power meter, in the
7. On the signal analyzer, press Restart.
8. Wait for the analyzer to finish averaging.
9. Press Peak Search.
10.Record the signal amplitude as measured by the analyzer in the measured
11.Calculate the signal amplitude accuracy using the following equation:
12.Record the results under the Amplitude Accuracy Error column of
Table 16-6 Amplitude Accuracy Results (Option P03, P08, P13, P26)
Nominal
Source Low- band
Amplitude Preamp
(dBm)
-13 ON
30 dB Pad between the adaptor and the signal analyzer input.
Source Amplitude column in
Power Meter Amplitude column of
amplitude column of Table
Amplitude Accuracy Error = Meas_amp + 30 dB - Power_meter
16-6
Res BW Span
(kHz) (kHz)
1 106
Figure 16-4 on page
Table 16-6.
Table 16-6.
Table 16-6.
16-6.
Measured Power Meter
Amplitude Amplitude
Meas_amp Power_meter
(dBm) (dBm)
615
613, using a
Table
Amplitude Test Limit
Accuracy (dB)
Error
(dB)
±1.30 dB