S p e c t r u m A n a l y z e r M o d e K e y Descriptions

Spectrum Analyzer Mode Functions

PEAK

ZOOM

PK NODE <>DL NH4

Iinds the highest displayed signal and narrows the span to a value selected by the user. Pressing PEAK ZOOM the first time will make FINAL SPAN the active function so the user can input the destination span. The current FINAL SPAN value will be displayed. At that time the user can enter a span or press PEZK ZOOM again to use the displayed span.

The peak zoom function sets the reference level to the signal amplitude and sets the center frequency step size to the signal frequency. If the signal is in a microwave band, a preselector peak is executed.

For a signal to be found it must have a peak of at least 6 dB. If no signal is found, Signal not found will be displayed. (The routine will ignore the analyzer local oscillator feedthrough signal which is at 0 Hz.)

Front-Panel Key Access (SPAN)

select which peaks will be listed in the peak table to include all peaks, or to exclude the peaks that are either above or below the display line. See Table 6-9. The display line is activated if it was not currently being displayed.

Table 6-9.

peaks above display line listed peeks below display line listed

Front-Panel Key Access CPEAK S E A R C H ]

6-108