HP Cable Box 8591C manual Dehod AM FM

Spectrum Analyzer Mode Key Descriptions

Spectrum Analyzer Mode Functions

DEHOD

AM FM

DEMOD ON OFF

DESKJET 310/55oc

allows selection of amplitude (AM) or frequency (FM) demodulation.

Activating AM detection turns off FM demodulation (if it is on). When the frequency span is greater than 0 Hz, a

30 kHz resolution bandwidth is used during demodulation, regardless of the screen annotation. When the span is equal to 0 Hz, the displayed bandwidth is used.

Turning FM demodulation on turns off AM demodulation (if it is on). When the frequency span is greater than 0 Hz,

a 100 kHz bandwidth is used during the demodulation, regardless of the screen annotation. When the span is equal to 0 Hz, the displayed bandwidth is used.

Front-Panel Key Access (j-1

turns the AM or FM demodulation on and off. If the analyzer is in a nonzero span, a marker is placed at center screen if an on-screen marker is not already present. The marker pause is changed to equal the current dwell time value. Demodulation takes place on any signal that is indicated

by the marker position during the marker pause. There is no change to the display during marker pause, but the demodulation signal is present on the AUX VIDEO OUT. Also see the SPEAKER ON OFF softkey description.

Pressing DEMOD ON OFF selects the sample peak detector for AM demodulation, the FMV detector for FM demodulation. If the analyzer is in zero span, demodulation is done continuously, with or without an on-screen marker.

Front-Panel Key Access (j-1

selects the HP DeskJet 310 or 550C for color printing. Use this function if you have one of these color printers. This softkey can be accessed by pressing C-1, then

S e t Colr P r i n t e r .

Front-Panel Key Access [CONFIG)

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