Patton electronic 1010A user manual Connection to the Twisted Pair Interface, Signal

4.0 INSTALLATION

Once you have properly configured the DTE/DCE switch, you are ready to connect the Model 1010A to your system. This section tells you how to properly connect the Model 1010A to the twisted pair and RS-232 interfaces, and how to operate the Model 1010A.

4.1 CONNECTION TO THE TWISTED PAIR INTERFACE

The Model 1010A supports data-only communication between two RS-232 devices at distances to 8.5 miles and data rates to 115.2 Kbps. There are two essential requirements for installing the Model 1010A:

1)These units work in pairs. Therefore, you must have one Model

1010A at each end of a two twisted pair interface.

2)To function properly, the Model 1010A needs two twisted pairs of metallic wire. These pairs must be unconditioned, dry metallic wire, between 19 and 26 AWG (the higher number gauges may limit distance somewhat). Standard dial-up telephone circuits, or leased circuits that run through signal equalization equipment, are not acceptable.

For your convenience, the Model 1010A is available with three different twisted pair interfaces: RJ-11 jack, RJ-45 jack and terminal blocks with strain relief.

4.1.1 TWISTED PAIR CONNECTION USING RJ-11 OR RJ-45

The RJ-11 and RJ-45 connectors on the Model 1010A's twisted pair interface are pre-wired for a standard TELCO wiring environment. The signal/pin relationships are shown below:

RJ-11	SIGNAL	RJ-45	SIGNAL
1	GND*	1	N/C
2	RCV-	2	GND*
3	XMT+	3	RCV-
4	XMT-	4	XMT+
5	RCV+	5	XMT-
6	GND	6	RCV+
		7	GND
		8	N/C

10.BEND the top half of the case as necessary to place it over the strain relief assembly. Do not snap the case together yet.

11.Insert one captive screw through a saddle washer, then insert the captive screw with the washer on it through the hole in the DB-25 end of the case. Snap that side of the case closed. Repeat the process for the other side. This completes cable installation.

4.2CONNECTION TO THE RS-232 INTERFACE

Once you have configured the Model 1010A for DTE or DCE and connected the twisted pair wires correctly, all that remains is to plug the 1010A directly into the DB-25 port of the RS-232 device. After doing so, remember to insert and tighten the two captive connector screws.

(Note: If you must use a cable to connect the Model 1010A to the RS-232 device, make sure it is a straight through cable of the shortest possible length—we recommend 6 feet or less).

4.3 OPERATING THE MODEL 1010A

Once the Model 1010A is properly installed, it should operate transparently—as if it were a standard cable connection. Operating power is derived from the RS-232 data and control signals; there is no "ON/OFF" switch. All data signals from the RS-232 interface are passed straight through. All control signals from the RS-232 interface are looped back.

(Note: If your system requires hardware flow control, you will need the Patton Model 1012 or Model 1060 Short Range Modem. Call Patton Customer Service at 301-975-1007 for more information).

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