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APPENDIX A
CONNECTOR PIN
ASSIGNMENTS
RS232 Port
1 — Protective Ground
2 — Transmitted Data
3 — Received Data
4 — Not Connected
5 — Clear to Send
6 — Not Connected
7 — Signal Ground
8 — Carrier Detect
9-19 — Not Connected
Serial I/O Port
1 — Clock Input
2 — Clock Output
3 — Data Input
4 — Ground
5 — Data Output
6 — Ground
7 — Command
8 — Motor Control
9 — Proceed
20 — Data Terminal Ready
21 — Not Connected
22 — Ring Indicator
23-25 — Not Connected
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777777
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10 — + 5/Ready
11 — Audio Input
12 — Not Connected
1 3 — Interrupt
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