Product manual

Installation instructions, Cell Link Unit-S (CLU-S) – REX-BRD0016 (ROFNB 157 16/2)
Technical Product Manual - DCT1800-GAP
TD 92093 (1/LZBNB 103 108 R4D) / 2006-03-09/ Ver.C
© 2006
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Chapter 10 Cell Link Unit-S (CLU-S) – REX-BRD0016
(ROFNB 157 16/2)
10.1 General
The CLU-S is used to control base stations via twisted pair cables with a maximum length of 2.1 km.
Power distribution to the base stations is protected by two PTCs for each base station (see figure
28).
Maintenance
The CLU-S contains the following field-exchangeable parts (see figure 27):
• CLU-S board controller firmware
10.2 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