Chapter 2 151
Making Adjustments
25. Checking the Absolute Amplitude Accuracy for Option 050
25. Checking the Absolute Amplitude
Accuracy for Option 050
This adjustment applies to:
All 8590 E-Series spectrum analyzers, Option 050
To measure the absolute amplitude accuracy of the analyzer, a signal
from a synthesized sweeper is output to both the analyzer and a
measurement receiver. To determine the absolute amplitude accuracy:
1. The amplitude of the sweeper's signal is adjusted until the analyzer
marker reads out a known amplitude.
2. The amplitude of the sweeper's signal is measured by the measuring
receiver. (The measurement receiver is used as a power meter.)
3. The difference between the marker readout and the measuring
receiver's measurement is determined. This difference is the
absolute amplitude accuracy.
Equipment required
Synthesized sweeper
Measurement receiver
Power splitter
Power sensor, 818 MHz to 948 MHz
Adapter, Type N (f) to APC 3.5 (m)
Adapter, APC 3.5 (f) to APC 3.5 (f)
Adapter, Type N (m) to Type N (m)
Cable, Type N, 183 cm (72 in)
Additional Equipment for 026
Adapter, type N (f) to APC-3.5 (f)
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