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8400B Plus Data Module
PHONE
LINE/
POWER
!
USE ONLY WITH COMMUNICATION
CIRCUIT POWER SOURCE
(Rear Endplate)
Wall
D8W
EIA-232-D
D8W
M9/F25 Adapter
8400B Plus Data Module
(use only with 25-pin
EIA-232-D Connector Cord)
(9-pin or
25-pin)
Connector
Cord
Jack
Telephone
(Optional)
FIGURE 5-4. Typical Installation of the U.S. and International Configuration,
including Telephone and Closet Power Supply
Physical Description
Dimensions
Note: The following measurements for the 8400B Plus data module are approximate.
Width = 5 inches
Depth (front and rear) = 7 3/4 inches
Height = 1 1/4 inches
Lights
The front panel of the 8400B Plus has two lights, one red light and one green light. These lights
indicate the status of the set during normal operation and the result of self-tests when initially
powered.
When power is first applied to the 8400B Plus data module, the unit performs a self-test to verify
that it is in working order. During the self-test, both lights will remain ON. When the self-test is
complete, the green light turns OFF.
If self-test passed, the red light will remain ON. This indicates that your 8400B Plus data
module is installed and ready for data communications operation.
5-21