User's Manual

Table Of Contents
mBSC2500U-005-RUCM11
MBSC2500U-005-RUCM11 April 15, 2013
Page 10
3.2.6 Powering
The Host Unit is powered by -48V DC through a DC power terminal block on the rear. An ON/OFF switch is
provided at the PSU front panel. The switch applies power to the Host Unit internal power supply, which
distributes the operating voltages to lines cards installed in the Host Unit shelf.
3.2.7 Host Unit Interface
The Host Unit interface consists of the various connectors, switches, terminals and LED indicators that are
provided on the front and rear panel. The Host Unit user interfaces are described in Table 1and indicated in
Figure 9.
T
able 1 Host Unit User Interface
#
User Interface
Designation
Device Functional Description
PSU
1 ON/OFF Power switch Enable/disable Host Unit internal power supply
2 Power LED(Green/Off) Indicates if the PSU is powered on or off.
Note: The power input port is provided according to the power in type.
RCU
1 Modem (optional) DB9(male) Used for external wired modem connection
2 RS232 (optional) DB9(female) Local connection from PC/Laptop through serial cable
3 RJ45 RJ45 jack (female) Ethernet connection interface for NMS
4 USB Mini USB (female) Used for USB connection for local GUI
5 Operate LED(Green/Red) Indicates if the RCU is normal or faulty
BIU
1 Tx (700~2600) QMA female connector
Band-specific Downlink input from BTS
(one QMA per band, up to 5 bands)
2 Rx (700~2600) QMA female connector
Band-specific Uplink output to BTS
(one QMA per band, up to 5 bands)
3 Tx1~Tx4 QMA female connector
Combined multi-band Downlink signal output to up to four
independent fiber paths (on FIUs)
4 Rx1~Rx4 QMA female connector
Combines multi-band Uplink signal inputs from up to four
independent fiber paths (on FIUs)
5 Operate LED(Green/Red) Indicates if the BIU is normal or faulty
FIU
1 Tx (1~2) QMA female connector Composite Downlink RF input from BIU
2 Rx (1~2) QMA female connector Composite Uplink RF output to BIU
3 Fiber (1~2)
E2000/APC WDM optical
transceiver
Fiber connection to Remote Node (2 per FIU)
4 Operate LED(Green/Red) Indicates if the FIU is normal or faulty
Enclosure Rear Panel
1 Alarm In Screw-type terminal block Alarm contacts - inputs from an external alarm system
2 Alarm Out Screw-type terminal block Alarm contacts – outputs to an external alarm system
3 DEBUG DB19 male connector Local serial connection for debug by BTI staff only