112 Chapter 2
Front-Panel Key Reference
FREQUENCY Channel
Freq Offset Allows you to input a frequency offset value that is added to the
frequency readout of the marker, to account for frequency conversions
external to the analyzer. Offset entries are added to all frequency
readouts including marker, start frequency, and stop frequency. Offsets
may only be entered using the numeric keypad. Offsets are not added to
the span or frequency count readouts. Entering an offset does not affect
the trace display. When a frequency offset is entered, its value appears
on the bottom of the display. To eliminate an offset, perform a
Factory
Preset, or press Freq Offset, 0, Hz.
When a frequency offset is entered, its value appears on the bottom of
the display (as opposed to reference level offsets, which appear on the
left side of the display). To eliminate an offset, press
Freq Offset, 0, and
Enter. Pressing Preset also sets the offset to zero.
NOTE This function is not available when FREQUENCY, Scale Type (Log) is
selected.
NOTE Frequency, Scale Type (Log) is not available when utilizing the frequency
offset function.
Key Access:
FREQUENCY Channel
Signal Track
On Off
Moves the signal that is nearest to the active marker to the center of
the display and keeps the signal there. ST appears in the lower-left
corner of the display. An (*) may appear in the upper-right corner of the
display while the analyzer is verifying that it has the correct signal.
Pressing
Signal Track (Off); Preset (with Preset Type set to Factory); or
Marker, More, Marker All Off turns off the signal track function.
When signal track is on and the span is reduced, an automatic zoom is
performed and the span is reduced in steps so that the signal remains
at the center of the display. If the span is zero, signal track cannot be
activated.
Key Access:
FREQUENCY Channel
NOTE If no marker is active, pressing Signal Track (On) will activate a marker,
perform a peak search, and center the marker on the display.
NOTE Switching to zero span sets Signal Track (Off).
NOTE FREQUENCY, Scale Type (Log) and Segmented (On) are not available
when Signal Track (On) is selected.
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