Radio Test Instruments
Subject to Export Control, see Cover Page for details.
7-26
Center - Span
Center-Span Mode uses the sweep Center frequency value and span setting to define the
frequency span. Fig. 7-29 shows the RF Spectrum from 149.950000 MHz to
150.050000 MHz, as defined by the Center Frequency of 150.000000 MHz and a Span of
100.0 kHz.
Fig. 7-29 Spectrum Analyzer Center Frequency and Span Setting
Zero Span
In Zero Span Mode the display timebase does not control a frequency sweep. The RF Input
is the set frequency and the display shows the power level of the received signal against
time.
Fig. 7-30 Spectrum Analyzer Zero Span Example
Fig. 7-30 shows an Analog Duplex signal burst at a frequency of 150.000000 MHz, against a
time base sweep of 100 ms.
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