User's Manual

MA 2000 System Elements
BTS/BDA Side Elements
MA 2000 Installation and Configuration Guide 16
Table 2-3. MA BU Front Panel Indicators
LED Description
PWR Power input detected for the corresponding unit.
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
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 2-8. MA BU Rear Panel (RF Connections)
Table 2-4. MobileAccess 1000 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 MobileAccess 410/430 controller, rear panel
RS485 port.
Alarms Dry-contact connections to BTS/BDA (normally closed).
Relevant only for system without MA 410/430 controllers.
PWR Power connection: 20 to 48VDC
Pair of uplink and downlink RF
connections for interface to BTS
Alarms dry-
contact
t
MA 410/430
Power