Agilent Technologies E1401-90493 Manual do Utilizador Página 156

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156 Chapter 2
Performance Verification Tests
20. Overall Absolute Amplitude Accuracy: Agilent E4402B, E4403B, E4404B, E4405B, E4407B,
and E4408B
a. Set the 1 dB step attenuator as indicated in Table 2-37.
b. Set the 10 dB step attenuator as indicated in Table 2-37.
c. Press
Single and wait for the sweep to finish.
d. Press
Peak Search (or Search). Even though the signal may be
slightly above the reference level for the first nominal amplitude
setting, the marker can still make a valid measurement.
e. Record the marker (Mkr1) amplitude value as the measured
amplitude in Table 2-37.
f. Calculate the amplitude accuracy as follows:
g. Record the amplitude accuracy in the performance verification
test record as indicated in Table 2-37.
Amplitude Accuracy Measured Amplitude Amptd
0dBm
ActualTotalAtten RefAtten
0dB
+()=
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