302 Chapter 15
Functional Tests
Amplitude Accuracy at 50 MHz
7. Perform the following steps for each row listed in Table 15-4:
a. Set the synthesized sweeper amplitude to the value listed in the Nominal
Source Amplitude column in Table 15-4
b. Set the Mech Atten as indicated in the Attenuation column in Table 15-4
c. Set the Span as listed in the Span column of Table 15-4
d. Record the source amplitude, as measured by the power meter, in the Power
Meter Amplitude column of Table 15-4
e. On the signal analyzer, press
Restart.
f. Wait for the signal analyzer to finish averaging.
g. Press
Peak Search.
h. Record the signal amplitude, as measured by the analyzer in the Measured
Amplitude column of Table 15-4
i. Calculate the signal amplitude accuracy error using the following equation,
and record the results under the Amplitude Accuracy Error column:
Amplitude Accuracy Error = Meas_amp − Power_meter
Table 15-4 Amplitude Accuracy Results
Nominal
Source
Amplitude
(dBm)
Attenuation
(dB)
Span
(MHz)
Measured
Amplitude
Meas_amp
(dBm)
Power Meter
Amplitude
Power_meter
(dBm)
Amplitude
Accuracy
Error
(dB)
Test L i m i t
(dB)
−410 2 ±1.13dB
−910 1 ±1.13dB
−14 10 0.5 ±1.13 dB
−4 20 0.1 ±1.13 dB
−14 20 0.1 ±1.13 dB
−4 30 0.1 ±1.13 dB
−14 30 0.1 ±1.13 dB
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