Specifications

7-4
Repeater Interface (J1) - (J4)
Connector J4 provides an interface to the repeater and transceiver. The number one
serial interface card is also connected to J4. Connector J1 provides eight Hardware
Inputs, eight User Function outputs and a RS-232 Serial Port. On board jumper
selection converts the RS-232 to a TTL Port.
J4 (DB25-F) J1 (DB25-M)
1. BUSY #2 (DVR) 1. INPUT #1
2. BUSY #1 (TELEPHONE) 2. TTL OUTPUT
3. CTCSS #2 3. TTL INPUT
4. CTCSS #1 4. RS-232 INPUT
5. COR #2 5. OUTPUT #1
6. COR #1 6. OUTPUT #2
7. SERIAL DATA 7. OUTPUT #3
8. SERIAL CLOCK 8. OUTPUT #4
9. PTT #2 9. OUTPUT #5
10. PTT #1 10. INPUT #2
11. TX AUDIO #1 11. INPUT #3
12. RX AUDIO #2 12. INPUT #4
13. RX AUDIO #1 13. INPUT #5
14. SERIAL STROBE #1 14. GROUND
15. SERIAL STROBE #2 15. GROUND
16. +12VDC 16. TTL OUTPUT
17. GROUND 17. RS-232 OUTPUT║
18. GROUND 18. OUTPUT #6
19. GROUND 19. OUTPUT #7
20. GROUND 20. OUTPUT #8
21. AUX AUDIO INPUT 21. GROUND
22. AUX AUDIO OUTPUT 22. GROUND
23. TX AUDIO #2 23. INPUT #6
24. GROUND 24. INPUT #7
25. GROUND 25. INPUT #8
Figure 7-1