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3. Proper 2-WirePairingbetween the two modems is as follows:
SIGNALPIN# PIN#SIGNAL
TIP 4----------------------------------------4 TIP
RING 5----------------------------------------5 RING
4. Proper 4-WirePairing between the two modems is as follows:
SIGNALPIN# PIN#SIGNAL
Tx 4 --------------------------------------3 Rx
Tx 5 --------------------------------------6 Rx
Rx 3 --------------------------------------4 Tx
Rx 6----------------------------------------5 Tx
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.
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.
Figure 5. Installation of Model 1092A Plug-in Serial Interface Module
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