User's Manual

P RODUCT M ANUAL C OMPACT R EPEATER D EKO 3178B D EKOLINK W IRELESS L TD .
Page 18 Proprietary Data Pub. 300TC80031 Rev. 1.55
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.
NOTE: The SALC feature overcomes this procedure.
4.5 V ERIFYING THE L INK BETWEEN THE BTS AND THE D UAL B AND BDA
This test checks the signal strength from the BTS antenna to the CBDA Dual Band BDA.
Proceed as follows:
1. Using a Spectrum analyzer, measure the received signal from BTS at the Donor
antenna port near the Dual Band BDA.
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.
• Register the signal strength of the downlink channel for the system operation
phase.