Installation Guide for FibeAir IP-20F
Page 17 of 63
Ceragon Proprietary and Confidential
1.6
Power Interfaces
FibeAir IP-20F receives an external supply of -48V current via a dual-feed power
interface, which can be connected to two separate power sources for power
redundancy. The IP-20F monitors the power supply for under-voltage and includes
reverse polarity protection, so that if the positive (+) and negative (-) inputs are mixed
up, the system remains shut down.
The allowed power input range for the IP-20F is -40V to -60V. An under voltage alarm
is triggered if the power goes below the allowed range, and an over voltage alarm is
triggered if the power goes above the allowed range.