Applied Instruments XR-3, Operation Manual

Page: 51 / 66

XR-3 TS2 Module Operation Manual XR-3
Page 51 of 66
15. Spectrum Screen
The spectrum screen may be used to:

Look for the presence of carriers

Look at a carrier with an incompatible modulation type or encryption

Optimize your polarity adjustment (null out the opposite polarity)

Look for interfering signals
This feature imitates a spectrum analyzer screen although it has less resolution and a slower
sweep rate than an actual spectrum analyzer. This screen has the following features:

Adjustable frequency span

Automated level scaling

Frequency and level cursors

Adjustable sweep rate
To view the spectrum display, press the MENU soft-key in bottom right hand corner of main Run
screen. Then press the Spectrum soft-key or use your up/down arrow keys to highlight
‘Spectrum’ and press Enter.
The spectrum screen will start sweeping with the maximum frequency span and amplitude range.
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