Agilent Technologies E1401-90493 15. Reference Level Accuracy: Agilent E4402B, E4403B, E4404B, E4405B, E4407B, and E4408B.

Chapter 2 117
Performance Verification Tests
15. Reference Level Accuracy: Agilent E4402B, E4403B, E4404B, E4405B, E4407B, and
E4408B.
15. Reference Level Accuracy: Agilent E4402B,
E4403B, E4404B, E4405B, E4407B, and E4408B.
A 50 MHz CW signal is applied to the 50 Ω Input of the analyzer
through two step attenuators. The amplitude of the source is decreased
in 10 dB steps and the analyzer marker functions are used to measure
the amplitude difference between steps. The external attenuator is used
as the reference standard. The test is performed in both log and linear
amplitude scales.
It is only necessary to test reference levels as low as −90 dBm (with
10 dB internal attenuation) since lower reference levels are a function
of the analyzer microprocessor manipulating the trace data. There is no
error associated with the trace data manipulation.
The related adjustment for this performance test is “IF Amplitude.”
Equipment Required
Synthesized signal generator
1 dB step attenuator
10 dB step attenuator
6 dB fixed attenuator (2 required)
Attenuator switch driver (if programmable step attenuators are
used)
Cable, Type-N 152-cm (60-in) (2 required)
Cable, BNC 122-cm (48-in)
Attenuator interconnect kit
Additional Equipment for Option BAB
Adapter, Type-N (f) to APC 3.5 (f)