Specifications

108 Chapter 12
Using Segmented Sweep (ESA-E Series Spectrum Analyzers)
Using Segmented Sweep to Monitor the Cellular Activity of a cdmaOne Band
Using Segmented Sweep (ESA-E
Series Spectrum Analyzers)
Using Segmented Sweep to Monitor the
Cellular Activity of a cdmaOne Band
In this example set up two segments to monitor the forward and reverse
links of a U.S. IS-95A cellular band. The third segment is used to zoom
in on an area of interest. You can use any communications band of
interest in your area to duplicate this example.
Step 1. Perform a factory preset:
Press
Preset, Factory Preset (if present).
Step 2. Turn on the internal preamp (if installed):
Press
AMPLITUDE Y Scale, More, Int Preamp (On).
Step 3. Open the segmented sweep editor:
Press
Sweep, Segmented, Modify, Edit.
Step 4. Monitor the activity in the cdmaOne band with the first segment:
Press
Center Freq, 836.5, MHz.
Press
Span, 25, MHz.
Press
Res BW, 10, kHz.
Step 5. Set the reference level to place the signal in the middle of the display:
Press
AMPLITUDE Y Scale, Ref Level, 40, −dBm.
Step 6. Monitor the activity of the base station with the second segment:
Press
Sweep, Segmented, Modify, Edit, Segment, 2, Enter.
Press
Center Freq, 881.5, MHz.
Press
Span, 25, MHz.
Press
Res BW, 10, kHz.
Figure 12-4 Monitoring the Reverse and Forward Links