Gemini Industries Printer user manual Connecting the Parallel Interface, Connecting Plug and Cable

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Interfacing Gem/d with Your Computer

Depending on the type of system you have, DIP switch number 2-3 is an important DIP switch that affects computer performance. For example, Apple operates on a 7-bit interface, and the IBM-PC requires an 8-bit interface.

CONNECTING THE PARALLEL INTERFACE

This section discusses hooking up your computer to Gemini, via the parallel interface.

A Look at the Parallel Interface Connector

When viewing your Gemini, as shown in Figure 4-3, the parallel interface connector is just to the left of DIP switch 2. Take a moment to look closely at the connection. You will see that the connector is a metal band encasing a plastic spacer, with the center taking the form of a hollow rectangle. This rectangular opening is bordered both on the top and bottom with rows of 18 metal strips, called pins, that are set in the blue plastic spacer.

For more information about the pins in Gemini’s parallel interface, turn to Appendix N at the back of this manual.

Each of these 38 pins supports an important function in your computer/printer interface, so the connecting plug must be compatible with the Gemini pin configuration.

The Connecting Plug and Cable

Note: The cable length should be as short as is workable to minimize signal loss.

Star Mfg. Co., Ltd. recommends a connecting plug by

AMPHENOL - product no. 57-30350.

The connecting cable should be a twisted-pair, ribbon-type cable. Appendices A through F provide information on acceptable connecting cables, including pin=out charts, in case you want to make your own connecting cable.

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