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| Interfaces | ||
| Pin assignment |
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| Designation |
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| Explanation | Direction | ||
| Pin | EIA |
| DIN |
| CCITT |
| from/to printer |
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| 1 | AA |
| E1 |
| 101 | PG: Protective Ground |
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| 2 | BA |
| D1 |
| 103 | TXD: Transmit Data | x |
| 3 | BB |
| D2 |
| 104 | RXD: Receive Data | x |
| 4 | CA |
| S2 |
| 105 | RTS: Request to Send | x |
| 5 | CB |
| M2 |
| 106 | CTS: Clear to Send | x |
| 6 | CC |
| M1 |
| 107 | DSR: Data Set Ready | x |
| 7 | AB |
| E2 |
| 102 | SG: Signal Ground |
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| 20 | CD |
| S1.2 |
| 108.2 | DTR: Data Terminal Ready | x |
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Programmer Reference Guide |