1.
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Make sure Wireless Interface is plugged in and turned on, and the red power LED on the interface is glowing.
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2.
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Check for solid connection of the serial cable between the interface and the computer, using the thumb-screws for secure attachments.
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3.
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Turn off the interface, wait 5 seconds and turn it back on, then retest.
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4.
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Check that the COM: port settings in the \windows\ars.ini file matches the port number the interface is connected to.
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5.
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Replace the serial cable between the interface and the computer.
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6.
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Replace the Wireless interface with a spare.
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7.
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If a second serial port is available on the computer, switch the serial cable to that port and change the COM: port settings in the ars.ini file, then reboot the computer and retest the keypad system.
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8.
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Replace the computer with a spare unit.
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