RAD Data comm RSD-20 operation manual Synchronization on Sub-channel

RSD-20 OPERATOR'S MANUAL INSTALLATION

2.5.1.3 Synchronization on Sub-channel 1

a)RSD-20 baud rate should be strapped to CLK-1.

b)DCE attached to main channel should be strapped to external clock.

c)DCEs attached to sub-channel 1 should be strapped to internal clock.

NOTE Synchronization on sub-channel 1 is not recommended when the modem connected to sub-channel 1 operates in switched carrier mode, as it causes fluctuations in clock frequency and phase.

EXT. CLK	RSD-20
DCE	MAIN	SUB-1 DTE	RCV. CLK	DCE	DCE
EXT. CK	DTE			RCV. CK	INT. CK
TX. CLK
		SUB DCE	TX. CLK	DTE
TX. CLK	MAIN		EXT. CLK
DTE	DTE	SUB DTE		DCE
				EXT. CK

Figure 2.6

Synchronization on Sub-channel 1

2.7