User Manual

A XELL D-MBR-USA R EPEATER
PRODUCT DESCRIPTION AND USER’S MANUAL
14 Axell Wireless Ltd
To measure the isolation, proceed as follows:
1. Inject a known signal from a signal generator into one antenna (preferably the Donor antenna).
2. Measure the coupled output from the Service antenna, using the Spectrum analyzer and LNA if
applicable.
3. Perform this procedure across the frequency range of both the Uplink and Downlink bands.
4. Register the lower result for system operation.
3.7.2 Verify Link between BTS and Repeater
WARNING! Perform this procedure before connecting the antennas to the Repeater
or powering on the Repeater. The Repeater should not be operated prior to the
verification of the operating parameter in its installation environment.
Before connecting the antennas or powering up the Repeater, verifying the Link
between the BTS and the Repeater
This test checks the signal strength from the BTS antenna to the Repeater.
Proceed as follows:
1. Using a Spectrum analyzer, measure the received signal from BTS at the Donor antenna port near
the Repeater.
2. Adjust the Donor antenna direction to receive the maximum signal strength.
3. Compare the received signal strength with the calculated signal strength from the design phase.
In case of discrepancy, check for one of the following:
• Antenna out of direction
• Antenna tuned to side lobe instead of main lobe
• Antenna connector or antenna cable faulty
• Line-of-sight problem (obstruction), etc.
4. Register the signal strength of the downlink channel for the system operation phase.