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Chapter 2 55
Performance Verification Tests
5. Frequency Span Accuracy: Agilent E4401B and E4411B
5. Frequency Span Accuracy: Agilent E4401B
and E4411B
For testing each frequency span, two synthesized sources are used to
provide two precisely-spaced signals. The analyzer marker functions
are used to measure this frequency difference.
There are no related adjustment procedures for this performance test.
Equipment Required
Synthesized sweeper
Synthesized signal generator
Power splitter
Adapter, Type-N (m) to Type-N (m)
Adapter, Type-N (f) to APC 3.5 (f)
Cable, Type-N, 152-cm (60-in) (2 required)
Cable, BNC, 122-cm (48-in)
Additional Equipment for 75 Ω Input
Pad, minimum loss
Adapter, Type-N (f), to BNC (m), 75
Ω
Procedure
Full Span Frequency Span Readout Accuracy
1. Connect the equipment as shown in Figure 2-5. Note that the power
splitter is used as a combiner. The synthesized signal generator
provides the frequency reference for the synthesized sweeper.
2. Press
Preset on the analyzer. Press the Factory Preset softkey, if it is
displayed.
3. Press
PRESET on the synthesized sweeper and set the controls as
follows:
CW, 1350 MHz
POWER LEVEL
, –5 dBm
4. On the synthesized signal generator, set the controls as follows:
FREQUENCY, 150 MHz
AMPLITUDE
, 0 dBm