Test for fault location, Interpreting the fault location measurement – Bird Technologies SA-6000EX User Manual
Page 84
Bird Technologies
68
Test for Fault Location
1. Connect the Site Analyzer to the cable being tested.
Note:
If you calibrated the Site Analyzer with a phase sta-
ble cable connected to its antenna port, do not remove the cable.
Connect it to the cable to be tested.
2. Wait at least 10 seconds for the sweep to update.
When you have a trace on the screen, you can do any of the following:
•
Hold the trace (refer to Measurement Hold, page 69)
•
Add markers to the trace (refer to Markers, page 70)
•
Save the trace (refer to Save Trace, page 80)
•
Print the trace (refer to Printing, page 77)
Interpreting the Fault Location Measurement
The graph below shows a typical Fault Location measurement for an
antenna system. The table lists typical component return losses.
Typical Component Return Loss
Antenna at Resonance
–14 dB
Connector
–25 dB
Jumper
–35 dB
Lightning Protector
–25 dB
Transmission Line
–30 dB