User's Manual

System Elements
2.2.1.2 BU Rear Panel
The BU rear panel contains the RF, NMS, and power connections. Note that there are two uplink
and two downlink RF connections to the BTS side (to an Interface Box or RIU) - each individual
uplink and downlink connection corresponds to a four-port BU element. For a four-port BU, one
uplink and one downlink port is connected; for an eight-port BU, two uplink and two downlink
ports are connected.
For systems that include MA 430 controllers, the RS 485 port is connected to the MA 410/430
controller to enable remote monitoring and management of the BU from a central location..
To MA 410/430
controller
Pair of uplink and downlink RF
connections for interface to BTS
Power
Figure 11. MA BU Rear Panel (RF Connections)
Table
2-6. MobileAccess 1000 Rear Panel Connections
Connector Description
Uplink output Uplink connectors to be connected on BTS side.
Downlink input Downlink connectors to be connected on the BTS side.
Com Port RS485 Connection to MobileAccess 410/430 controller.
PWR Power connection
Alarms N/A
MA 1000M Installation and Configuration Guide 13