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Model 1211 Back Plane PCB
Technical Manual
P.N. 803808
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1 Description:
The 1211/1505 backplane PCB offers a quick connection solution for 3 slots of the 1211 type 10 card cage. Up to 4
back planes can be installed on one 1211 card cage. The 1505 I/O connections are connected to a 25-pair Centronics
style connector.
2 Installation:
Simply align the backplane PCB over 3 edge connectors, press into place and solder the wire wrap pins to the PCB.
3 Connectors:
3.1 25-Pair Centronics
PIN # Signal PIN # Signal PIN # Signal
1. TX #1 (card slot 1)
2. RX #1 (card slot 1)
3. TX #2 (card slot 1)
4. RX #2 (card slot 1)
5. TX #3 (card slot 1)
6. RX #3 (card slot 1)
7. TX #4 (card slot 1)
8. RX #4 (card slot 1)
9. TX #1 (card slot 2)
10. RX #1 (card slot 2)
11. TX #2 (card slot 2)
12. RX #2 (card slot 2)
13. TX #3 (card slot 2)
14. RX #3 (card slot 2)
15. TX #4 (card slot 2)
16. RX #4 (card slot 2)
17. TX #1 (card slot 3)
18. RX #1 (card slot 3)
19. TX #2 (card slot 3)
20. RX #2 (card slot 3)
21. TX #3 (card slot 3)
22. RX #3 (card slot 3)
23. TX #4 (card slot 3)
24. RX #4 (card slot 3)
25. TP10 Spare
26. TX #1 (card slot 1)
27. RX #1 (card slot 1)
28. TX #2 (card slot 1)
29. RX #2 (card slot 1)
30. TX #3 (card slot 1)
31. RX #3 (card slot 1)
32. TX #4 (card slot 1)
33. RX #4 (card slot 1)
34. TX #1 (card slot 2)
35. RX #1 (card slot 2)
36. TX #2 (card slot 2)
37. RX #2 (card slot 2)
38. TX #3 (card slot 2)
39. RX #3 (card slot 2)
40. TX #4 (card slot 2)
41. RX #4 (card slot 2)
42. TX #1 (card slot 3)
43. RX #1 (card slot 3)
44. TX #2 (card slot 3)
45. RX #2 (card slot 3)
46. TX #3 (card slot 3)
47. RX #3 (card slot 3)
48. TX #4 (card slot 3)
49. RX #4 (card slot 3)
50. TP14 Spare
3.2 Power connections
TB1 is provided for power buss connections from a +12Vdc source, TP connections are provided for parallel
connections between additional backplane PCB’s.
+12Vdc = TB1 pin 1, TP1 and TP11
Ground = TB1 pin 2, TP2 and TP12
Earth GND = TB1 pin 3, TP3 and TP13
3.3 Solder Jumpers
Solder jumpers are provided to Sum/Combine 1505 card slots, solder SJ1 to combine slots 1 & 2, solder SJ2 to
combine slots 2 & 3, solder both SJ1 & 2 to combine all 3 slots
TELEX Communications, Inc.
Vega Signaling Products
8601 East Cornhusker Highway, Lincoln, Nebraska, 68507
Phone: (402) 465-7026 / (800) 752-7560 Fax: (402) 467-3279
E-mail: vega@telex.com, Web: www.vega-signaling.com
September 30, 2003
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