User's Manual

CrossFire iDAS – All-Digital Transport System
User Guide
© SUNWAVE SOLUTIONS LIMITED 2017 22 Version 1.0
Antennas Isolation Detector
The NPRU provides antennas isolation detector to optimize the antennas deployment to meet the signal coverage
requirement.
Use the following procedures to detect antennas isolation:
1. Log into the NPRU WebOMT. See Crossfire NP User Guide, Chapter 3.2.3 for details.
2. Go to Maintenance > Engineering > Isolation Detector
Isolation Detector
3. Select Tx option in Isolation ANT Switch to choose which antenna transmits RF signal.
4. Enter frequency in Detecting Frequency for testing frequency band.
5. Enable Isolation Detector Switch to start isolation test.
6. Check the Rx1/2 Isolation between Tx and Rx which shall over 45 dB for good performance in MIMO scenario.
Otherwise change the antennas deployment – the distance of Tx/Rx and the antennas’ angle – to meet the requirement.
7. Select another Tx option in Isolation ANT Switch and repeat step 4 to 6.