Chapter 15 303
Functional Tests
Amplitude Accuracy at 50 MHz
Testing Preamp Option (P03, P07)
Instruments containing Options P03, P07 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 Figure 15-4 on page 301, using a 30 dB
Pad between the adaptor and the signal analyzer input.
3. Set the synthesized sweeper amplitude to the value listed in the Nominal
Source Amplitude column in Table 15-5
4. Set the signal analyzer input attenuation to 0 dB.
5. Set the Span as listed in Table 15-5
6. Record the source amplitude, as measured by the power meter, in the Power
Meter Amplitude column of Table 15-5
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
amplitude column of Table 15-5
11. Calculate the signal amplitude accuracy using the following equation:
Amplitude Accuracy Error = Meas_amp + 30 dB − Power_meter
12. Record the results under the Amplitude Accuracy Error column of Table 15-5
Table 15-5 Amplitude Accuracy Results (Option P03, P07)
Nominal
Source
Amplitude
(dBm)
Low-
band
Preamp
Res BW
(kHz)
Span
(kHz)
Measured
Amplitude
Meas_amp
(dBm)
Power Meter
Amplitude
Power_meter
(dBm)
Amplitude
Accuracy
Error
(dB)
Test
Limit
(dB)
−13 ON 1 106 ±1.30 dB
To Next Page
Loading...
