iDP3550/3551 User ’s Manual
10.3.6Electrical Characteristics
(1)RS-232C circuit
Input (RXD, DSR, mRXD)
[Printer Side] | [Host Side] |
RXD
Space=(+8V): Start bit
Equivalent to MAX232
Output (DTR, TXD, mTXD, RCH, RTS, FAULT)
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| Equivalent to MAX232 |
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| DTR | |||
| TXD |
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| Space=(+8V): At Ready | Space=(+8V): 0 |
(2) Others |
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• RESET | : A signal to reset the entire printer. |
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• PE | : A signal to show that the paper has run out. | Normal at the "LOW" level, but turned | ||
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| to the "HIGH" level when the paper has run out. | |
• GND | : Signal ground |
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• FG | : Frame ground |
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38 | CITIZEN |
