HP 8590 E-Series User Manual page 250

MK TRACK
moves the signal that is nearest to the active marker to the center of the
screen and keeps the signal there.
ON OFF
upper-right corner of the display. An (*) may appear in the upper-right corner
of the display while the spectrum analyzer is verifying that it has the correct
signal.
Pressing MK TRACK ON OFF , C-1, MARKER NORMAL, or MARKER ALL OFF
turns off the marker-track function.
When marker track is on and the span is reduced, an automatic zoom is
performed: the span is reduced in steps so that the signal remains at the
center of the screen. If the span is zero, marker track cannot be activated.
Front-Panel Key Access: [MKRFCTN)
accesses the marker control softkeys which select the type and number of
markers and turn them on and off. Markers are diamond-shaped characters
that identify points of traces and allow the traces to be manipulated and
controlled on the screen. During manual operation, four markers may appear
on the display simultaneously; only one can be controlled at a time. The
marker that is controlled is called the "active" marker. Pressing IIV1KR) activates
the MARKER NORMAL softkey.
(read "marker to") accesses the softkeys used for the transfer of marker
information directly into other functions.
accesses the marker function softkeys. These softkeys can be used to access
the marker table and to turn on marker functions for tracking the signal and
counting its frequency. Noise markers and the marker pause function are also
accessed under C-1.
accesses the softkey menu for selecting screen title or prefix characters
MNOPQR
M through R.
Front-Panel Key Access: (CAL), [CONFIG), [DISPLAY), [RECALL), or (SAVE_)
changes the softkey menus for the spectrum-analyzer mode and other
modes of operation when SPECTRUM ANALYZER (located under [PRESET]) and
PRESET SPECTRUM are selected, respectively. Other modes are available using
the downloadable measurement personalities. The HP 8571 IA cable television
measurements personality, the HP 85712D EM1 diagnostics measurements
personality, and the HP 85713A digital radio measurements personality are
examples of some of these modes. Others are described in "Measurement
Personalities, Options, and Accessories." Consult the documentation
accompanying each personality for information about these other modes of
operation.
MKR-TRK CNTR-TRK
or appears in the
Key Descriptions 7-57