Patton electronic 1089/I user manual Connecting the 10Base-T Ethernet Port to a PC DTE

4.0 INSTALLATION

When the Model 1089 has been properly configured, it may be connected to the DSL twisted pair interface, the 10BaseT Ethernet Interface, and the power source. This section describes these connec- tions.

4.2 Connecting the 10Base-T Ethernet Port to a PC (DTE)

The 10Base-T interface is configured as DTE (Data Terminal Equipment). If the Model 1089 is to to connect to another DTE device such as a 10Base-T network interface card, construct a 10Base-T crossover cable and connect the wires as shown in the diagram below.

DSL Interface

10BaseT Interface

Figure 3. Model 1089 Rear Panel

4.1 CONNECTING THE DSL INTERFACE

10BaseT Port RJ-45 Pin No.

1(TX+)

2(TX-)

3(RX+)

6(RX-)

10Base-T DTE RJ-45 Pin No.

1(TX+)

2(TX-)

3(RX+)

6(RX-)

The Model 1089 supports communication between 10BaseT Hubs or Workstations at distances to 5 miles (8 km) over 24 AWG (.5mm) twisted pair wire. Two things are essential:

1.These units operate as a pair. Both units at the end of the twisted pair DSL span must be set for the same DTE rate.

2.To function properly, the Model 1089 needs one twisted pair of metallic wire. This twisted pair must be unconditioned, dry, metal- lic wire, between 19 (.9mm) and 26 AWG (.4mm) (the higher num- ber gauges will limit distance). Standard dial-up telephone cir- cuits, or leased circuits that run through signal equalization equip- ment, or standard, flat modular telephone type cable, will not work!

The RJ-45 connector on the Model 1089’s twisted pair interface is polarity insensitive and is wired for a two-wire interface. The signal/pin relationships are shown in Figure 4 below.

4.3 Connecting the 10Base-T Ethernet Port to a Hub

The 10Base-T interface is configured as DTE (Data Terminal Equipment), just like a 10Base-T network interface card in a PC. Therefore, it “expects” to connect to a 10Base-T Hub using a straight- through RJ-45 cable. Use the diagram below to construct a cable to connect the 10 BaseT interface to a 10Base-T Hub.

10BaseT Port					10Base-T Hub
RJ-45 Pin No.					RJ-45 Pin No.
1	(TD+)			1		(RD+)
2	(TD-)		2			(RD-)
3	(RD+)	3				(TD+)
6	(RD-)				6	(TD-)

	1 (N/C)
1	2 (N/C)
	3 (N/C)
2
3

1

1 TD+ (data output from 1089)

2 TD- (data output from 1089)

4 4 (2-Wire TIP)

55 (2-Wire RING)

6	6 (N/C)
7
8	7 (N/C)

8 (N/C)

Figure 4. Model 1089 twisted pair line interface.

IMPORTANT!: The Model 1089 has been optimized for per- formance at high bitrates (DTE rates greater than 512 kbps). To ensure accurate performance at these bit rates, please use twisted pair line interface cable that is at least 330ft (100m) in length.

9

23 RD+ (data input to 1089)

3

4 4 (no connection)

5 5 (no connection)

6

76 RD- (data input to 1089)

87 (no connection)

8 (no connection)

Figure 5. Model 1089 10BaseT Ethernet RJ-45 Connector Pinout

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