Patton electronic 1088/K user manual Connect Twisted Pair 120 ohm to G.703 Network

The following is a description of the jumper settings with respect to the rear panel connectors.

•For a 75-ohm connection (coax) insert JP1, JP4, JP5, and JP6 (default)

•For a 120-ohm connection (RJ45) remove JP1 and JP4, JP5, and JP6.

Connect Twisted Pair (120 ohm) to G.703 Network

The Model 1088/K is equipped with a single RJ-48C jack for connections to a 120 ohm twisted pair G.703/G.704 network interface. If your G.703/ G.704 network terminates via RJ-48C, use the diagram below and the table on the following page to make the proper connections. The connec- tor pinout and signals are shown in Figure 6.

RJ-48C Jack				Signal Name
	1	1		(RX) Receive (Ring)
		2		(RX) Receive (Tip)
	2	3		Shield
	3		4	(TX) Transmit (Ring)
	4
			5	(TX) Transmit (Tip)
	5
	6	6		Shield
	7	7		No connection
	8	8		No connection

Figure 6. 120 Ohm RJ-48C G.703 Interface

Use the following connection diagram to connect the 120 ohm G.703/ G.704 network channel.

	RJ-48C Cable (8-Wire)
1088/K		G.703/G.704
SIGNAL	PIN#	NETWORK SIGNAL
RX(R)	1-----------------------	TX(R)
RX(T)	2-----------------------	TX(T)
TX(R)	5-----------------------	RX(R)
TX(T)	4-----------------------	RX(T)
Shield	3-----------------------	Shield
Shield	6-----------------------	Shield

Connect Dual Coaxial Cable (75 ohm) to G.703 Network

The Model 1088/K is also equipped with dual female BNCs (TX and RX) for connection to a 75 ohm dual coax G.703 network interface. If your

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