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12. Amplitude Fidelity
Test
12. Amplitude
Fidelity Test
(For instruments with Option 857, refer to Chapter 5.)
Related Adjustment
Log Amplifier Adjustments
Specification
Log:
Incremental
ho.1
dB/dB over 0 to 80
dB
display
Cumulative
3 MHz to 30 Hz Resolution Bandwidth
<kl.O
dB
max over 0 to 80
dB
display (20
-
30°C).
5%
1.5
dB
max over 0 to 90
dB
display
Linear:
f3%
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.
SYNTHESIZER LEVEL
f
GENERA
OR
SIGNAL
ANALYZER
?
ADAPTER
Figure 2-21. Amplitude Fidelity Test Setup
Performance Tests
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