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What is the Difference Between the GPIB 120A and GPIB 120B in Terms of Isolation?

Hardware: GPIB>>Support Products>>GPIB-120A

Problem:
What is the main difference between the GPIB 120A and the GPIB 120B in terms of isolation?

Solution:
The principle differences between the 120A and 120B are listed below:

GPIB 120A:
  • Uses optical isolators to isolate the two GPIB buses from one another, but uses electric isolators to isolate the buses from the power supply and backplane of the unit.
  • Has break down voltage isolation of 1600V.
  • Only isolates one port from the ground.
GPIB 120B:
  • Uses electrical isolators to isolate the buses from one another and from the backplane and power supply of the unit.
  • Has break down voltage isolation of 2500V.
  • Has each port fully isolated from ground.

Figure 1: GPIB-120B


Related Links:
Product Manuals: GPIB-120A User Manual and Specifications
Product Manuals: GPIB-120B User Manual and Specifications

Attachments:





Report Date: 02/12/2008
Last Updated: 04/11/2008
Document ID: 4IB2MELH

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