Installation
C-15
Input and Output Connectors
Two 25-position D-subminiature connectors, one male and one female, are
mounted on the 7K Main Board for interfacing to external devices. J2 is a
female connector (DB25S). J3 is a male connector (DB25P). Use the mating
connectors supplied with the 7K for your cable assemblies.
Input and Output Connectors
Controller Main Board
Pin # J2 Female Connector J3 Male Connector
1 receiver #1 audio input logic input #1
2 receiver #1 COR logic input #2
3 receiver #2 COR logic input #3
4 receiver #3 COR logic input #4
5 receiver #1 CTCSS decoder logic input #5
6 receiver #2 CTCSS decoder logic input #6
7 receiver #3 CTCSS decoder phone line busy input
8 receiver #2 audio input logic output #1
9 CTCSS frequency #1 logic output #2
10 transmitter #1 PTT logic output #3
11 transmitter #2 PTT logic output #4
12 CTCSS frequency #2 logic output #5
13 CTCSS frequency #3 logic output #6
14 transmitter #1 audio output logic output #7
15 transmitter #2 audio output phone line busy output
16 CTCSS frequency #4 FC1 (reserved)
17 CTCSS frequency #5 FC2 (reserved)
18 CTCSS frequency #6 FC3 (reserved)
19 ground +5V test
20 ground +10V test
21 ground +12V test
22 ground ground
23 CTCSS encoder in ground
24 CTCSS encoder out ground
25 receiver #3 audio input ground
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