MA2000 System Elements
MA Base Unit
MA2000 Installation and Configuration Guide
22
LED
Description
PWR
Power input detected for the corresponding unit.
20 to 48VDC
LSR
ON - laser circuitry for the corresponding element (group of four ports) is
functioning correctly.
Link 1-4, 5-8 ON - the optical link to/from the connected remote functions within the
specifications in both directions.
Blinking - optical power from remote is lower than required
2.3.2.2
BU Rear Panel
The BU rear panel contains the RF connections, Alarms, NMS and power connections.
NOTE: The following figure shows the rear panel of an 8-port BU. A 4-port BU contains a single UL and a
single DL RF connector.
Figure
2-17. MA BU Rear Panel (RF Connections)
Table
2-7. MA BU Rear Panel Connections
Connector
Description
Uplink output
Uplink connectors to be connected on BTS/BDA side. For an
8-port BU, both UL connectors must be connected.
Downlink input
Downlink connectors to be connected on the BTS/BDA side.
For an 8-port BU, both DL connectors must be connected.
Com Port RS485
Connection to SC-450 controller, rear panel RS485 port.
Alarms
Dry-contact connections to BTS/BDA (normally closed).
Relevant only for system without SC-450 controller.
PWR
Power connection: 20 to 48VDC
Pair of uplink and downlink RF
connections for interface to BTS
id
Alarms dry-contact
connector
MA 410/MA430
Power