User Guide for FibeAir® IP-20 All-Outdoor Products, CeraOS 10.5
Page 159 of 825
Ceragon Proprietary and Confidential
6 Unmute all the carriers and check the RSL levels of all the carriers on both
sides of the link. The RSL of the horizontal carrier of the local unit should
match the RSL of the vertical carrier of the remote unit, within ±2dB. The RSL
of the vertical carrier of the local unit should match the RSL of the horizontal
carrier of the remote unit, within ±2dB.
7 For a 2x2 configuration, repeat Steps 1 through 6 for the lower IP-20C or IP-
20C-HP units.
8 Check the XPI levels of all the carriers on both sides of the link. All the carriers
should have approximately the same XPI value. Do not adjust the XPI at the
remote side of the link, as this may cause the XPI at the local side of the link to
deteriorate.
Note:
In some cases, the XPI might not exceed the required 25dB minimum
due to adverse atmospheric conditions. If you believe this to be the
case, you can leave the configuration at the lower values, but be sure
to monitor the XPI to make sure it subsequently exceeds 25dB. A
normal XPI level in clear sky conditions is between 25 and 30dB.