Agilent Technologies 8560E User Manual page 239

FRAC N FREQ
FREE RUN
FREQ COUNT
FREQ DIAGNOSE
In multiband sweeps, the frequency displayed corresponds to the
NOTE
local-oscillator start frequency of the band that was being swept when
the key was pressed.
Chapter 4
Front-panel key access:
Displays the fractional N frequency corresponding to
the start frequency. This oscillator is used for
fine-tuning the local oscillator.
Front-panel key access:
Sets the trigger to free-run mode. Sweep triggers occur
as rapidly as the spectrum analyzer will allow.
Front-panel key access:
Activates the frequency counter and displays its results
in the upper-right corner of the screen. This replaces
any current marker readout in that area. If MARKER
NORMAL or MARKER DELTA is already active,
uses that marker mode to read the frequency or
COUNT
the difference in frequency between two markers,
respectively. If no marker mode is active, pressing
automatically activates MARKER NORMAL.
COUNT
The counter will only count signals that are displayed
on the screen. Thus, counter accuracy is lost when
using MARKER DELTA when the anchor marker is off
the screen or when either marker is not on a signal. All
signal-counting is done during the retrace time of the
sweep.
FREQ COUNT
described under the MARKER NORMAL softkey.
cannot be used on traces that are being viewed,
COUNT
in stimulus-response (tracking generator)
measurements, or in video trigger.
also accesses a menu of additional counter
FREQ COUNT
functions, which are as follows: COUNTER ON OFF,
COUNTER RES, MARKER NORMAL, MARKER
DELTA, PEAK SEARCH, and NEXT PEAK.
Front-panel key access:
Displays a menu of diagnostic functions, which allow
various internal parameters of the analyzer to be
retrieved. Refer to the
the frequency diagnostic softkeys.
Front-panel key access:
Key Function Descriptions
DISPLAY
CAL
TRIG
uses the same marker priority as
FREQ COUNT
menu tree for a list of all of
CAL
CAL
Key Descriptions
FREQ
FREQ
FREQ
239