HP Cable Box 8591C manual Detector PK SP NG Display CAL Data

DETECTOR PK SP NG

DISPLAY CAL DATA

Spectrum Analyzer Mode Key Descriptions

Spectrum Analyzer Mode Functions

selects between positive peak, sample, and negative peak detection. When sample detection is selected, SMPL appears in the upper-left corner of the screen. In sample mode, the instantaneous signal value at the present display point is placed in memory. Sample detection is activated automatically for noise level markers, during video averaging, and for FFT measurements.

When positive peak detection is selected, PEAK appears in the upper-left corner of the screen. Positive peak detection obtains the maximum video signal between the last display point and the present display point and stores this value in the trace memory address. Positive peak detection is selected at power on and by pressing CPRESET).

Negative peak detection functions the same as positive peak detection but selects the minimum video signal. The PEAK message does not appear in the upper-left corner of the screen.

Front-Panel Key Access (TRACE)

accesses softkeys that include the HOLD key and limit line menus, and activate the display line, threshold and analog+ display mode. They allow title and prefix entry, and control the display of the graticule and screen annotation.

displays the current correction-factor data generated by the frequency and amplitude self-calibration routines. This is a service diagnostic function and is for service use only.

Front-Panel Key Access ICAL)

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