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The following chart provides a description of each of the pins in the parallel connector. A standard parallel data cable provides the required interconnection between the computer and the printer.
| Parallel Connector Pin Assignments |
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Pin No. | Description |
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1 | The nStrobe printer input has internal 3.3 kW |
| (IOL= 1.5 mA) and is designed to receive a signal driven open collector |
| VOL <= 0.8 V. This pin is a signal from the host computer. The nStrobe |
| input is debounced on a LOW going edge to require an active width |
| greater than 0.5 ms before data is latched. |
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Data inputs have TTL input characteristics with internal 3.3 kW pullups | |
| and represent 1 TTL unit load or less. The data inputs are positive logic |
| with a HIGH voltage level corresponding to a logic 1. Pin 2 through Pin |
| 9 = D0 through D7 respectively. |
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10 | The nAck output is an active LOW pulse used to indicate termination. |
| nAck is a driven open collector with a 3.3 kW internal |
| output sinks 7 mA to a VOL <= 0.4 V. |
11 | The Busy output is active HIGH whenever the printer cannot accept |
| data due to any normal or abnormal condition, including buffer overflow, |
| head open, over temperature, and media error conditions. Busy is a |
| driven open collector with a 3.3 kW internal |
| mA to a VOL <= 0.4 V. |
12 | The PError signal is active HIGH whenever the printer is out of media or |
| ribbon. |
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13 | The Select signal function is determined by an additional configuration |
| option which becomes active when the port is present. In the default |
| condition, select is active HIGH whenever the parallel port is powered |
| up and the parallel port is enabled. In the |
| is active LOW whenever the printer is printing. |
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14 | nAutoFd (not connected). |
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15 | Not defined. |
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16 | Logic Gnd. |
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17 | FRAME GROUND is at the same potential as Logic Gnd (pin 16). |
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18 | FUSED 5 V - 1 A maximum. |
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SIGNAL GROUNDS are the Logic Grounds and Returns for all input | |
| and output signals. |
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NOT USED - These leads should be left unconnected. | |
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36 | NSelectIn (not connected). |
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50 | Zebra |