3 Data Bit 1 16 Initialize Printer *
4 Data Bit 2 17 Select In *
5 Data Bit 3 18 Ground
6 Data Bit 4 19 Ground
7 Data Bit 5 20 Ground
8 Data Bit 6 21 Ground
9 Data Bit 7 22 Ground
10 Acknowledge * 23 Ground
11 Busy 24 Ground
12 Paper Out 25 Ground
13 Select Shell Ground
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Table A-2. Serial Connector
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Pin Signal Pin Signal
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1 Carrier Detect 6 Data Set Ready
2 Receive Data 7 Ready to Send
3 Transmit Data 8 Clear to Send
4 Data Terminal Ready 9 Ring Indicator
5 Ground Shell Ground
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