Product manual

System description, Radio exchange boards

Technical Product Manual - DCT1800-GAP

TD 92093 (1/LZBNB 103 108 R4D) / 2006-03-09/ Ver.C

4.5 Cell Link Unit-S – CLU-S

The functionality of the CLU-S board is essentially the same as the CLU board (see paragraph 4.4),

with the exception that it can only be used for ‘short’ distance interfacing (up to 1.9 km). As from board

revision R1A it also incorporates Automatic Delay Measurement (ADM).

4.6 Speech Link Unit – SLU

The speech link unit is a combination of an SPU-S and a CLU-S on one board. It contains 8 Speech

Processing Circuits (SPCs) and 8 Cell Link Circuits (CLCs) (see figure

7).

The SLU can be used to control base stations via twisted pair cables of up to 1.9 km. For longer

distances (up to 3.5 km - only applicable for KRCNB 201 base stations and 301, 302 and 303 base

stations of revision R1n or R2n) a CLU with article no. REX-BRD0014 (product code ROFNB 157 11)

must be used.

As of revision R2A the SLU is provided with Automatic Delay Measurement (ADM).

See paragraphs 4.3, 4.4 and 4.5 for the description of the SPU-S, CLU and CLU-S.

Fig. 7 Speech Link Unit (SLU)

4.7 Overview of CLU, SLU, SLU-S, CLU-S boards

Figure 8 shows that the SPU-S and the CLU-S boards are derived from the SLU board. The SPU-S

board is a SLU board where the CLU-S function has not been implemented and the CLU-S board is

a SLU board where the SPU-S function has not been implemented.

Peripheral

LTC

SPC

LTC

SPC

LTC

SPC

LTC

SPC

CLC

Peripheral

Base

station

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