SYSTEM RACK

2.All PTMs should be installed and configured as follows:

Switch

Sections Closed

Sections Open

S5, S7

3,4,5,6,7

1,2

S6, S8

2,3,6

1,4,5,7,8

3.Select one of the 8 Backplane boards for measuring. Measurements can be made on any of the

64-pin connectors on the Backplane selected.

4.All measurements should be referenced to ground (pins 9, 10, 41 or 42) unless otherwise noted.

5.All test readings should be within 5% of the following specifications:

Pins

Ohms

16/48

37.5

17/49

37.5

18/50

37.5

19/51

75.0

20/52

37.5

21/53

37.5

22/54

100 (measured to +5V DC*)

23/55

37.5

24/56

100 (measured to +5V DC*)

* Pins 11, 12, 43 or 44.

6.On the top Backplane board, the following measure- ments should be referenced to ground (pins 9, 10, 41 or 42).

Center Pin of

Ohms

J5

37.5

J6

37.5

J23

19.2

J24

19.2

NOTE: The four readings should be ±1 ohm from the test specifications.

7.Test is completed.

Disconnect the cables from the Call Processor.

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