Patton electronic 1090 Signal PIN#, Connection to the Serial Port, Changing Quickconnect Modules

When connecting two Model 1090’s, it is necessary to use a crossover cable. The diagram below shows how a crossover cable should be constructed.

	RJ-45 Cable (4-Wire)
SIGNAL	PIN#	PIN#	SIGNAL
XMT+	1-----------------------	8	RCV-
XMT-	2-----------------------	7	RCV+
GND*	4-----------------------	5	GND*
GND*	5-----------------------	4	GND*
RCV+	7-----------------------	2	XMT-
RCV-	8-----------------------	1	XMT+

*Connection to ground is optional

4.2 CONNECTION TO THE SERIAL PORT

The serial port interface on the Model 1090 uses interchangeable Quick Connect Modules. Each Quick Connect Module has a 50-pin card edge connector on one side and a serial port interface on the other. Figure 4 (below) shows how a Quick Connect™ Module plugs into the back of the Model 1090.

Port

Interface

1	ON
0	OFF

Figure 4. Installation of Model 1090 Plug-in Serial Interface Module

4.2.1 CHANGING QUICKCONNECT™ MODULES

When you purchase a particular version of the Model 1090, it should be shipped to you with the appropriate QuickConnect™ Module already installed. If you need to install a different QuickConnect™ Module, follow these steps.

Removing the Existing QuickConnect™ Module

1.Turn the power switch off. Leave the power cord plugged into a grounded outlet to keep the unit grounded.

2.Loosen the two thumbscrews on the module by turning them counterclockwise.

3.Grasp the two thumbscrews and gently pull the module from the unit. Apply equal force to the thumbscrews to keep the module straight during the removal process.

Installing the New QuickConnect™ Module

1.Make sure the power switch is off. Leave the power cord plugged into a grounded outlet to keep the unit grounded.

2.Hold the module with the faceplate toward you and align the module with the guide slots in the rear panel of the Model 1090.

3.While keeping the module’s faceplate parallel with the Model 1090 rear panel, slide the module straight in–so that the card edge contacts line up with the socket inside the chassis.

Note: The card edge connector should meet the socket when it is almost all the way into the chassis. If you encounter a lot of resistance, remove the module and repeat Steps 2 and 3.

4.With the card edge contacts aligned with the socket, firmly seat the module by using your thumbs to apply pressure directly to the right and left edges of the module faceplate. Applying moderate and even pressure should be sufficient to seat the module. You should hear it snap into place.

5.To secure the module in place, push the thumbscrews into the chassis and turn the screws clockwise to tighten.

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