HP 8591C Uživatelský manuál Strana 333

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Spectrum Analyzer Mode Key Descriptions
Spectrum Analyzer Mode Functions
DONE
exits the pulse parameter entry menus in the gate utility
assigning the current marker value to be the value of the
parameter being entered. Pressing DONE also restores the
sweep delay and sweep time, of the time domain window,
to the values that existed prior to any adjustments made
during pulse parameter entry.
Front-Panel Key Access
(SWEEP_
DROOP
disables the reset of the peak detector on the
Al6
Processor/Video assembly after each analog-to-digital
conversion. This is a service diagnostic function and is for
service use only.
Front-Panel Key Access (CAL)
DSP LINE
ON OFF
activates an adjustable horizontal line that is used as a
visual reference line. The line, which can be used for trace
arithmetic, has amplitude values that correspond to its
vertical position when compared to the reference level. The
value of the display line appears in the active function block
and on the left side of the screen. The display line can be
adjusted using the step keys, knob, or numeric keypad.
Pressing any digit, 0 through 9, on the numeric keypad
brings up the selected terminator menu. To deactivate
the display line, press DSP LINE ON OFF so that OFF is
underlined. (Also see the VIDEO softkey description.)
Front-Panel Key Access
c-1,
C-1,
or
[PEAK SEARCH]
DWELL
TIME
sets the dwell time for the marker pause, during which
demodulation can take place in nonzero span sweeps. The
dwell time can be set from 2 milliseconds to 100 seconds.
Front-Panel Key Access
(AUX]
6-57
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