CTC Union FMUX-01A Manuale Utente Scaricare il pdf (Pagina 52)

Chapter 5. Loop Back Testing

46 Version 1.2 Apr 2006

5.2.4 Datacom (RS-530, V.35, X.21, RS-449, RS-232) 4-Channel Port Card Timing

FMUX is DCE and provides clocks to connected DTEs (Internal Timing)

DTE DCE DCE DTE

TC TC

RC RC

FMUX is placed between existing DCE and DTE (External Timing)

DCE DTE DCE DTE

ETC TC

RC

FMUX is placed between two DCE devices (Transparent Timing)

DCE DTE DTE DCE

ETC TC, RC

TC, RC ETC

Int Osc

Rate = n x 64 where

n=1 to 32

Recover

(from optical)

Rate = n x 64

Ext Clk

Rate = n x 64 where

n=1 to 32

Recover

(from optical)

Rate = n x 64

Trans

Rate = n x 64 where

n=1 to 32

Trans

Rate = n x 64 where

n=1 to 32

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