Spectrum Analyzer Mode Key Descriptions

Spectrum Analyzer Mode Functions

GATE ON OFF

GATE UTILITY

Option 107 only.

turns on or off the gate, the time-gated analyzer capability. The gate can be turned on outside, or from within, the gate utility. The gate utility makes it easier to set up and manipulate the gate.

If GATE ON OFF is accessed under the [SWEEP) menu it

turns the gate on and off. If GATE ON OFF is accessed

under the Define Gate softkey from within the gate utility, the gate can only be turned on when the frequency domain window is active. If the time domain window is made active the gate will be turned off. Gate manipulation with the gate turned on in the time domain window is difficult due to trace dropouts and triggering errors.

Front-Panel Key Access cm)

Option 107 only.

accesses the softkey functions used for the time-gated analyzer capability. It creates related time domain and frequency domain windows to set up the time gate and make measurements. The center frequency and reference level must be set correctly before entering the gate utility. There must be a TTL signal at the GATE TRIGGER INPUT on the rear panel, and GATE OUTPUT must be connected to EXT TRIG INPUT. If no trigger is present an error message is displayed. Connect a trigger input or press instrument preset to exit the gate utility.

N O T E

If the gate utility menus are exited by pressing one of the front panel keys they may be re-entered by pressing (SWEEP] twice.

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