Product manual

Installation instructions, Cell Link Unit (CLU) – REX-BRD0014 (ROFNB 157 11/2)
Technical Product Manual - DCT1800-GAP
TD 92093 (1/LZBNB 103 108 R4D) / 2006-03-09/ Ver.C
© 2006
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Chapter 9 Cell Link Unit (CLU) – REX-BRD0014
(ROFNB 157 11/2)
9.1 General
The CLU is used to control base stations via twisted pair cables with a maximum length of 3.5 km.
The CLU REX-BRD0014 (ROFNB 157 11/2), supports a robust data link protocol between the CLU
and the base stations.
Power distribution to the base stations is protected by two 1 AT fuses for each base station.
Maintenance
The CLU contains the following field-exchangeable parts (see figure 25):
• CLU DCT1800 board controller firmware
• Two 1 AT fuses for each base station (see figure 26). The fuses can be ordered individually
REX-SPP0028 (NGHNB 101 106/T1) of 1 fuse.
9.2 Board description
Jumpers
Not applicable.
Connectors
The CLU-S has the following connectors at the front:
• 8 connectors (CLC1 - CLC8) by which the Cell Link Circuits (CLCs) are connected to the base
stations
• 1 connector (base station power) to connect a power supply voltage from the connection board
for powering the base stations when no AC-adapters are used. The power connector does not
have a polarity. It makes no difference which pin becomes plus or minus.
LEDs
LED1 : Normally on. Power on LED
LED2 : Normally off. Watch-dog LED (not significant)
LED3 : Normally off. Board not polled LED
LED4 : Normally off. Base station in NEW state or board error