HP 8920A - Automatic Calibration; Relationship between Span, Resolution Bandwidth, and Sweep Rate; Setting Resolution Bandwidth and Sweep Rate; Using the Spectrum Analyzer

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Chapter 21, Spectrum Analyzer Screen
Using the Spectrum Analyzer
Using the Spectrum Analyzer
Automatic Calibration
During operation, the Spectrum Analyzer pauses for approximately 2 seconds
every 5 minutes to recalibrate itself. This does not affect the accuracy of displayed
measurements, but does cause a brief interruption of the displayed information
during the process.
Setting Resolution Bandwidth and Sweep Rate
The resolution bandwidth and sweep rate are determined by the span setting, and
cannot be set independently.
These settings are listed in the following table.
Table 14 Relationship Between Span, Resolution Bandwidth, and Sweep Rate
Span
Resolution BW
(kHz)
Sweep Rate
<50 kHz 0.3 28.6 kHz/second
<200 kHz 1.0 329.0 kHz/second
<1.5 MHz 3.0 3.0 MHz/second
<3 MHz 30.0 21.4 MHz/second
<18 MHz 30.0 36.3 MHz/second
<200 MHz 300.0 257.0 MHz/second
1 GHz 300.0 1.0 GHz/second