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FREQ
OFFSET
Spectrum Analyzer Mode Key
Oescrlptions
Spectrum Analyzer Mode Functions
allows the user to input a frequency offset value that is
added to the frequency readout, to account for frequency
conversions external to the analyzer. Offset entries are
added to all frequency readouts including marker, start
frequency, and stop frequency. Entering an offset does
not affect the trace. Offsets are not added to the span.
Frequency offsets are entered using the numeric keypad.
When a frequency offset is entered, its value is displayed
on the bottom of the screen (as opposed to reference level
offsets, which are displayed on the left side of the screen).
To eliminate an offset, press
FREQ
OFFSET and 0
c-1.
Pressing
I-1
also sets the offset to zero.
Front-Panel Key Access [FREQUENCY]
activates the center-frequency or star-frequency function
and accesses the menu that has the frequency functions.
The center frequency or start frequency value appears below
the graticule on the screen.
Although the analyzer allows entry of frequencies greater
than the specified frequency range, using frequencies
greater than the frequency span of the analyzer is not
recommended.
NOTE
When changing both the center frequency and the span, change the frequency first since the span can
be limited by the frequency value.
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