Agilent Technologies E1401-90493 User Manual Page 150

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150 Chapter 2
Performance Verification Tests
20. Overall Absolute Amplitude Accuracy: Agilent E4402B, E4403B, E4404B, E4405B, E4407B,
and E4408B
20. Overall Absolute Amplitude Accuracy:
Agilent E4402B, E4403B, E4404B, E4405B,
E4407B, and E4408B
This test measures the absolute amplitude of the analyzer at 50 MHz. A
synthesized signal generator and attenuators are used as the signal
source to the analyzer. A power meter is used to measure this signal
source with the attenuators set to 0 dB. The value measured is recorded
as the source amplitude. The attenuators are used to adjust the signal
levels applied to the analyzer from the initial signal amplitude (set with
the power meter) and –50 dBm. The amplitude measured by the
analyzer is compared to the actual signal level and the amplitude error
is calculated.
There are no related adjustment procedures for this performance test.
Equipment Required
Synthesized signal generator
10 dB step attenuator
1 dB step attenuator
Attenuator interconnection kit
Attenuator driver (if programmable step attenuators are used)
6 dB fixed attenuator (2 required)
Power meter
RF power sensor
Cable, Type-N, 62 cm (24 in.) (m) (2 required)
Cable, BNC
Adapter, Type-N (f) to Type-N (f)
Additional Equipment for Option BAB
Adapter, Type N (f) to APC 3.5 (f)
Procedure
Measuring 0 dBm Reference Level
1. Press
Preset on the analyzer. Press the Factory Preset softkey, if it is
displayed.
2. Connect a BNC cable from AMPTD REF OUT to the 50
Input
connector using a Type N (m) to BNC (f) adapter.
3. Perform a complete self-alignment and set Auto Align Off. Press
System, Alignments, Align Now, All, and wait for the alignment routine
to finish. Then, press
Return, Auto Align, Off.
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