Hardware Overview
This section describes the GPIB-140B fiber optic GPIB extender.
GPIB-140B Description
Note
The GPIB-140B bus extender can communicate with either a GPIB-140B or
a GPIB-140A bus extender. The GPIB-140B cannot communicate with a GPIB-140,
a GPIB-140/2 or a GPIB-140A/2 bus extender since it uses a different protocol to
communicate across the fiber-optic cable.
The GPIB-140B is a high-speed bus extender that you can use in pairs with multi-mode fiber-
optic cable to connect two separate GPIB systems in a functionally transparent manner.
The two bus systems are physically separate, as shown in the following figure.
Figure 1. Typical Extension System (Physical Configuration)
Printer
(Listener)
GPIB Cable
Computer
(System Controller,
Talker, and Listener)
GPIB Cable
Multi-Mode
Fiber-Optic Cable
Signal Generator
(Listener)
Unit Under Test
Multimeter
(Talker and Listener)
GPIB-140B
GPIB-140B
GPIB Cable
The devices logically appear to be located on the same bus, as shown in the following figure.
Figure 2. Typical Extension System (Logical Configuration)
Computer
(System Controller,
Talker, and Listener)
Printer
(Listener)
GPIB
Multimeter
(Talker and Listener)
Signal Generator
(Listener)
Unit Under Test
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GPIB-140B User Manual