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PES1900NR Operations Manual
Chapter 10. Final Testing and Optimization — 167
Chapter 10. Final Testing and Optimization
Channel Assignment
Channel Select Filters should be set to match the GSM channels equipped at the Donor BTS, RBS.
Chapter 9 describes the channel assignment procedure.
See
Channel Properties
->
Channel #
.
Measuring Output Power
At this point, the antennas should be mounted, coax feeders swept, antennas aligned and isolation
confirmed per instructions in Chapter 3. The repeater should be mounted, wired and tested per
Chapters 4 to 8.
Repeater mains power switch should be OFF at this time.
To measure output power:
1. Remove the 50-Ohm terminations from the repeater antenna ports.
2. Connect the cell site (BTS, RBS) and mobile service antenna coax feeders to the proper antenna
ports.
3. Connect the repeater’s internal backup battery located in the I/O Entry Box.
4. Turn ON repeater system power.
5. Open a session with RepeaterNet Craft and login.
6. Set the Forward and Reverse Gains to 65 dB (minimum).
7. Activate the Forward and Reverse Power Amplifiers using RepeaterNet.
8. Monitor the Forward RF output power on the Measurements tab of the Forward PA Status
screen.
9. Adjust the Forward Direction Gain until the power is near expectations. Remember that GSM
carrier power varies according to the traffic loading.
10. Monitor the Reverse RF output power on the Measurements tab of the Reverse PA Status
screen. Reverse RF power may not indicate significant power levels. An active subscriber unit
signal must be present for reverse RF power to indicate.
11. Compare the Forward and Reverse RF output power levels to the intended RF output power
levels for the system (defined in the site plan or network engineering documentation) and the
maximum output power of the Repeater.
12. If the RF output power levels exceed the planned limits for this application, reduce RF power
output by adjusting repeater gain.