Nortel Networks DCT1900 manual Synchronization Distribution Board REX-BRD0006 or Roanb 101

Technical Product Manual - DCT1900

Installation Instructions, Synchronization Distribution Board (SDB) – REX-BRD0006 or ROANB 101 38

CHAPTER 18

Synchronization Distribution Board (SDB) – REX-BRD0006 or ROANB

10138

18.1Board Description

The SDB (see Fig. 18–1) if installed is located on the bottom plate of the Modular Cabinet near the MCCB and allows the connection of one input and three output synchronization signals to the CPU via shielded twisted pairs cables. The synchronization signals are required to achieve PWT air interface synchronization between systems to allow seamless inter system handovers. An electrical schematic diagram is shown in Fig. 18–2. This board is not factory installed.

Note: Refer to Chapter 20 for CPU2 synchronization.

SYNC

IN

X4

X7

X3

SYNC OUT 1

X8
X6	X5
X2	X1
SYNC	SYNC
OUT 2	OUT 3

Screw holes

Fig. 18-1 Synchronization Distribution Board - REX-BRD0006 or ROANB 101 38

Connectors
X1, X2, X3	: External cable connection sync out.
X4	: External cable connection sync in.
X5, X6, X7	: Sync out connection to CPU.
X8	: Sync in connection to CPU.

Install-DCT1900/R8/mw	18-1
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