Patton electronic 3088 Series user manual Connect twisted pair 120 ohm to E1 network

Model 3088 Series User Manual 3 • RocketLink-G installation

Connect twisted pair (120 ohm) to E1 network

The Model 3088/K is equipped with a single RJ-48C jack for connections to a 120 ohm twisted pair E1 net- work interface. If your E1 network terminates via RJ-48C, use the diagram below and the table following it to make the proper connections. The connector pinout and signals are shown in figure 13.

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

66 Shield

77 No connection

88 No connection

Figure 13. 120 Ohm RJ-48C E1 interface

Use the following connection diagram to connect the 120-ohm E1 network channel.

\

	RJ-48C Cable (8-Wire)
3088/K		E1 (G.703/G.704)
Signal	Pin #	Network signal
RX (Ring)	1	TX (Ring)
RX (Tip)	2	TX (Tip)
Shield	3	Shield
TX (Ring)	4	RX (Ring)
TX (Tip)	5	RX (Tip)
Shield	6	Shield

Figure 14. RJ-45 cable diagram for E1 connection

Connecting dual coaxial cable (75 ohm) to E1 network

The Model 3088/K is also equipped with dual female BNCs (TX and RX) for connection to a 75 ohm dual coax E1 network interface. If your E1 network terminates via dual coaxial cable, use figure 15 to make the proper connections.

The interconnecting cables shall be acceptable for external use

and shall be rated for the proper application with respect to volt-

age, current, anticipated temperature, flammability, and

CAUTION mechanical serviceability.

Installation 47