3. Proper 2-Wire Pairing between the two modems is as follows:

SIGNAL

PIN#

PIN#

SIGNAL

TIP

4 ----------------------------------------

4

TIP

RING

5 ----------------------------------------

5

RING

4. Proper 4-Wire Pairing between the two modems is as follows:

SIGNAL

PIN#

PIN#

SIGNAL

Tx

4 --------------------------------------

3

Rx

Tx

5 --------------------------------------

6

Rx

Rx

3 --------------------------------------

4

Tx

Rx

6 ----------------------------------------

5

Tx

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4.2 CONNECTING THE SERIAL PORT

The serial port interface on the Model 1092A uses interchangeable QuikConnect™ Modules. Each QuikConnect™ Module has a 50-pin card edge connector on one side and a serial port interface on the other. Figure 5 below shows how a QuikConnect™ Module plugs into the back of the Model 1092A.

Figure 5. Installation of Model 1092A Plug-in Serial Interface Module

4.2.1 Changing QuikConnect™ Modules

When you purchase a particular version of the Model 1092A, it should be shipped to you with the appropriate QuikConnect™ Module already installed. If you need to install a different QuikConnect™ Module, follow these steps:

Removing the Existing QuikConnect™ 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 QuikConnect™ Module

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

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Patton electronic 1092A user manual Signal PIN# Connecting the Serial Port, Changing QuikConnect Modules