User's Manual Part 2b

Hardware Installation Guide Installing the BSDU
02030311-05 Airspan Networks Ltd. 5-11
5.8. Connecting Sync IN/OUT ports
The BSDU’s front panel provides an in/out synchronization 8-Pin RJ-45 ports for
synchronization between BSDUs at the base station. The SYNC OUT of the master
BSDU is connected to the SYNC IN of a slave BSDU, which then connects its
SYNC OUT to the SYNC IN of another slave BSDU, and so on.
! Connector: 8-Pin RJ-45 (male)
! Cable: straight-through cable
! Connector Pinouts:
! Sync IN
Pin Name Description
1 TD+ Transmit data to GPS
2 TD-
Transmit data from
GPS
3 Rx+
Receive Data (hop
synchronization)
4 NC Not connected
5 NC Not connected
6 Rx-
Receive Data (hop
synchronization)
7 1PPS+ GPS pulse per second
8 1PPS- GPS pulse per second