
8. Amplitude Fidelity Test
8.
Amplitude
Fidelity
Test
(For instruments with Option 857, refer to Chapter 5.)
Related
Adjustment
Log Amplifier Adjustments
Specification
Log:
Incremental
fO.l
dB/dB
over 0 to 80
dB
display
Cumulative
3 MHz to 30 Hz Resolution Bandwidth
s&l.0
dB
over 0 to 80
dB
display (20 to 30°C)
sf1.5
dB
over 0 to 90
dB
display Linear:
4~3%
of Reference Level for top 9 l/2 divisions of display
Description
Amplitude fidelity in log and linear modes is tested by decreasing the
signal level to the spectrum analyzer in 10
dB
steps with a calibrated
signal source and measuring the displayed amplitude change with the
analyzer’s MARKER A function.
FREOUENCY
SYNTHESIZER
SPECTRUM ANALYZER
TER
Figure 2-11. Amplitude Fidelity Test Setup
Performance Tests 2-27
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