Specifications

Appendix A 551
Manual Changes
Manual Changes
A. Manual Changes
An outline of a remote control system using the macro functions is shown in ê} A-2.
Figure A-2 Structure example of GPIB remote control system
Required equipment
1. The Agilent E4991A RF Impedance/Material Analyzer and the accessories required to measure a
DUT
2. Peripheral equipment depending on the user’s purpose
3. GPIB cable (10833A/B/C/D) to connect the E4991A and peripheral equipment
Size and configuration of possible GPIB systems
For information on the type of GPIB system that can be constructed for controlling peripheral
equipment, refer to “For information on the type of GPIB system that can be constructed for
controlling peripheral equipment, refer to .” on page 551.
How to operate macros
It is necessary to understand the basics of E4991A VBA, which is the programming
language used for writing and executing macros. E4991A VBA is briefly explained in
Chapter 13, “Use of Macros,” on page 211. Refer to E4991A VBA help for more detailed
When using macro functions to control the E4991A, it is not
necessary to select the system-controller mode or the
addressable-only mode of the GPIB system.
However, to control peripheral equipment other than the E4991A,
you must set the E4991A to the system-controller mode because
control is done through the internal GPIB bus.
When the E4991A is used as the system controller, set the
E4991A to system-controller mode and set the GPIB address as
the system controller. This setting is made by the following front
panel operation.
a. Set the E4991A to system-controller mode.
System - GPIB Setup... - Control Mode [System Controller]
b. Set the GPIB address of the system controller.
System - GPIB Setup... - Control Address: (drop-down box)
c. Turn the E4991A’s main power off and then back on again.