Port Connectors
Table A - 3: DB-9 Connector Pinouts
Pin Number | Signal Name |
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4 | Data Terminal Ready (DTR) |
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5 | Ground (GND) |
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6 | Data Set Ready (DSR) |
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7 | Request to Send (RTS) |
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8 | Clear to Send (CTS) |
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9 | Ring Indicator (RI) |
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