Parallel Port - Tektronix Phaser 540 Plus User Manual

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Technical Notes

Parallel port

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Phaser 540 Color Printer
The printer has an asynchronous parallel port that lets you interface with
PCs. The parallel port supports uni-directional and bi-directional
communications (refer to the Phaser 540 Drivers and Utilities Printing
Reference for instructions on setting the port to bi-directional
communications). For bi-directional communications, the parallel port
supports two modes: Compatibility Mode and Nibble Mode.
The interpretation of interface signals depends on the current mode.
Compatibility Mode provides host-to-printer communication in a manner
compatible with a uni-directional interface. Nibble Mode provides
printer-to-host communication and may be combined with Compatibility
Mode to provide bi-directional communication.
Note
For more information, refer to the IEEE P1284 document for
parallel interfaces.
When you use the parallel port, be sure to type this command at the PC (if
LPT1 is not available, use LPT2) to disable timeouts:
MODE LPT1:,,P