Service manual

2-24 Installation: Electrical Connections

Table 2-7. J5 System Connector, Row B Pins

Pin # Pin Assignment

Input/

Output

To/From Signal Characteristics

1 Reserved O J1-B32, J2-B32 –

2 Reserved O J1-B31, J2-B31 –

3 Carrier Operated Relay (Common) O J1-B30, J2-B30 Common Relay Contact

4 Carrier Detect Switch O J1-B29, J2-B29, J3-B24 TTL output, active high

5 Reserved I J1-B28, J2-B28 –

6 Reserved I J1-B27, J2-B27 –

7 Reserved I J1-B26, J2-B26 –

8 Reserved I J3-B25 –

9 Reserved I/O J1-B24, J2-B24 –

10 N/C – N/C –

11 Reserved I/O J1-B22, J2-B22 –

12 Reserved I/O J1-B23, J2-B23 –

13 Reserved – N/C –

14 Reserved I J1-B19, J2-B19, J3-B19, J7-14 –

15 GND – Station ground –

16 N/C – – –

17 N/C – – –

18 Accessory 14.2 VDC O P8 pins 3, 4 (through F2) +14.2 VDC

19 GND – Station ground –

20 5 VDC O P8 pins 7, 8 +5.1 ± 0.25 VDC

21 Reserved O J1-B12 –

22 N/C – – –

23 N/C – – –

24 N/C – – –

25 N/C – – –

26 N/C I J1-B7, J2-B7 –

27 GND – Station ground –

28 Reserved O J4-C10 –

29 AC Fail Relay (Common) O J1-B4, J2-B4 Common relay contact

30 Reserved O J4-A9 –

31 GND – Station ground –

32 Accessory 14.2 VDC O P8 pins 3, 4 (through F2) +14.2 VDC