Specifications

552 Appendix A
Manual Changes
Manual Changes
information on the basics of E4991A VBA programming, standard control, and functions.
Change 2
Outline of GPIB remote control system
This section explains the system structures and required equipment for sending GPIB
command messages. In
Chapter 17, you can also find more on the GPIB commands used to
control the E4991A from an external computer through the GPIB interface.
System structure
Connect the E4991A to an external computer and peripheral equipment with a GPIB cable.
Figure A-3 outlines the system structure for the GPIB remote control system.
Figure A-3 Structure example of GPIB remote control system
What is GPIB?
GPIB (General-Purpose Interface Bus) is an interface standard for connecting computers and
peripheral equipment. It supports worldwide standards such as IEEE 488.1, IEC-625, IEEE 488.2
and JIS-C1901. By using the GPIB interface, the E4991A can be controlled from an external
computer. The computer sends commands and instructions to the E4991A and receives data sent
from it through GPIB.