Patton electronic 3004 user manual Operation, Installation, Buffer

3.0 OPERATION

Data is transferred from the system to the tail using the system receive clock, which is provided to the external clock input (terminal timing) of the tail device. Data from the tail circuit is loaded into the 3004-MTE buffer using the receive clock of the tail device. Data is transferred from the 3004-MTE buffer to the system using the system transmit clock.

SYSTEM			TAIL
DCE	J1	J2
			DCE
	SYSTEM	TAIL
	TC		RC
	TT	BUFFER
	TD		RD
	RC		TT (XTC)
	RD		TD
	CD		RTS
	DSR		DTR
			TC
	RTS		CD
	CTS
	DTR		DSR
			CTS
	SG		SG
	FG		FG
	See Appendix for pin numbers and
	connector signal assignments		Set for

EXTERNAL CLOCK

EXTERNAL CLOCK

4.0 INSTALLATION

Connect the port of the 3004-MTE labeled "SYSTEM" to the main modem or multiplexer sub-channel, i.e. the "system DCE".

Connect the port of the 3004-MTE labeled "TAIL" to the local tail-end DCE or modem, i.e. the "tail-end DCE". The local tail-end modem must be set to EXTERNAL CLOCK. (Local modem must accept TD data on the Terminal Timing signal from the 3004-MTE.)

Note: The remote modem on the tail circuit must be configured for Receive Recovered Clock (clock loopback).

SYSTEM	3004-MTE	Local Modem	Remote Modem	Terminal
		(External Clock)	(Clock Loopback)	(Remote DTE)

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