SYSTEM RACK
11.Remove CIMs from rack and patch cords from
VTM PCM Bank Verification
This requires the use of one CIM and one VTM1.
1.Verify the VTM1 card is in Shelf
2.On the VTM1 connect a Transmission Test Set to TP1 and TP2 (common).
3.On the VTM1 set S2 to select the 1020 Hz alignment tone. The tone should be heard in the Test Set speaker. Adjust the monitor volume as necessary.
4.Set the CIM for System Test "1".
(S5, section 1 open; sections 2,3,4 closed.)
5.Place the module in any slot on Shelf 1.
6.Connect a Transmission Test Set with the common lead in CIM connector J13.
•Verify
•Verify
7.Move the module to a slot on Shelf 2.
•Verify
•Verify
8.Move the module to a slot on Shelf 3.
•Verify
•Verify
9.Move the module to a slot on Shelf 4.
•Verify
•Verify
10.Set the CIM to System Test “0”. (S5 all sections closed.)
11.Remove the CIM from the rack.
4.2.10 FINAL CONFIGURATION VERIFICATION
NOTE: Make sure both power supplies are turned OFF.
1.Disconnect AC Power Cables from AC power source.
2.All PTMs should be installed and configured as follows:
Switch | Sections Closed | Sections Open |
S5, S7 | 2,5,6,7 | 1,3,4 |
S6, S8 | 2,5,6 | 1,3,4,7,8 |
3.Select one of the six Backplane boards for measuring. Measurements can be made on any of the
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 measurements 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 complete.