RAD Data comm RIC-E1 Functional Description, Functional Block Diagram, Timing Reference

RIC-E1Installation and Operation Manual Chapter 1 Introduction

1.3 Functional Description

Functional Block Diagram

Figure 1-3shows the functional block diagram of RIC-E1.

Interchangable Interfaces

Txd

Rxd

Txclk

Rxclk

Loss

Tst

Ana

X

LIU

Transformers

Clock Gen.

		Unbalanced
			BNC
	Select	Balanced
			RJ - 45
	IMP
		Unbalanced
			BNC
Tx & Rx Code
	AMI
	HDB3		P.S.

Figure 1-3. RIC-E1 Block Diagram

Timing Reference

RIC-E1 supports three clock modes:

•Internal, derived from its internal oscillator

•External, supplied by the attached DTE

•Receive, recovered from the received line signal.

Diagnostics

RIC-E1 supports a V.54 (loop 3) local loopback activated by the internal jumper of the standalone RIC-E1 unit, front panel pushbutton of the RIC-E1/R card or via corresponding pin of the DTE interface connector (not available for X.21 and Ethernet interfaces). For more information, refer to Chapter 4.

Functional Description 1-3

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