National Instruments GPIB-1284CT, Начало работы, Страница: 10 / 33

Chapter 1 Introduction
GPIB-1284CT for Windows 1-2 www.ni.com
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One of the following shielded GPIB cables, which you can purchase
from National Instruments:
Type X1 single-shielded cables (1, 2, or 4 m)
Type X2 double-shielded cables (1, 2, or 4 m)
Caution To meet FCC emission limits for this device, you must use a shielded (Type X1
or X2) GPIB cable. If you operate this equipment with a non-shielded cable, it may
interfere with radio and television reception.
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Parallel cables, which you can purchase from National Instruments
Optional Equipment
For information about ordering the following optional equipment, contact
National Instruments:
• Parallel cables:
– 25-pin D-Sub to 25-pin D-Sub (1 or 2 m)
• GPIB bus extenders:
– GPIB-130
– GPIB-140A
GPIB-1284CT Hardware Overview
The GPIB-1284CT is a high-performance parallel-to-GPIB interface.
The GPIB-1284CT uses the NI-488.2 software to transform any PC
AT-compatible computer with a parallel port into a fully functional Talker,
Listener, or Controller with complete communication and bus management
capability.
The GPIB-1284CT has all the logic required to implement the physical and
electrical specifications of IEEE 488 and IEEE 1284. The GPIB-1284CT
conforms to all versions of IEEE 488, including IEEE 488.2. The
TNT4882C Controller chip implements all IEEE 488
Talker/Listener/Controller functionality.
The GPIB-1284CT has two parallel ports—one for connecting to the host
computer and another for transparent pass-through connection to other
parallel port devices. Communication from the computer through the
pass-through port of the GPIB-1284CT to another parallel port device can
be only unidirectional. When the GPIB-1284CT is initially powered on,