AT&T System 85 manual 7500B Data Module User’s Manual

7500B Data Module

Distance Limitations

The maximum signaling distance from the port board to the work location jack based on DIW 24 AWG cable is:

Terminating resistor in work location—1,900 feet

Terminating resistor in satellite closet—1,600 feet.

Power Requirements

The stand-alone 7500B Data Module operates with power from a modular AC to DC adapter that is normally plugged into a wall outlet. When the 7500B is used in a multiple mount arrangement, a built-in power supply is provided in the 77A Data Mounting.

Terminating Resistor

A 440A4 Terminating Resistor adapter is required with the 7500B. The 440A4 can be located at the work location or in the satellite closet.

FCC Registration

The 7500B data module is not FCC registered.

Additional Documents

The following documents contain additional information relating to the 7500B Data Module:

7500B Data Module User’s Manual, 555-021-717

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