June 2002
Beginner to intermediate
816 pages
32h 59m
English
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Parallel Connectors and Cables
IEEE 1284-1994 defines both the electrical and physical interface for cables and connectors. Cable quality is critical for IEEE 1284, because various IEEE 1284 modes support much higher transmission speeds than SPP.
Parallel Connectors
Traditional parallel cables use a DB25M
connector
for the PC end and a male, 36-pin, 0.085” centerline Champ connector
with bale locks (commonly called a Centronics C36M) for the printer.
The IEEE 1284-1994 specification allows these two traditional
connectors to be used as before. It designates the DB25M the
IEEE 1284-1994
Type A Connector
and the C36M the IEEE 1284-1994
Type B
Connector. IEEE 1284 also defines a new type of parallel
connector, called the 1284-1994
Type C
Connector, which uses a 36-pin, 0.050” centerline
mini-connector with clip latches, and is usually called a
mini-Centronics connector.
Printer cables are now available that use these connectors in many
combinations.
PC-to-Peripheral Parallel Cables
It used to be that a printer cable was a printer cable. Not anymore. Printer cables now come in a variety of types, which use different connectors and pinouts. The good news is that you can still use any printer cable to connect a PC to a printer—as long as the connectors physically fit—and that connection will work in some fashion. The bad news is that using an old printer cable may cripple the performance and functionality of the link.
When you buy a new parallel cable—which you should if you are now using ...
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