Specifications

Chapter 2 37
Outline of Remote Control
Remote control using remote user interface function and application
software
2. Outline of Remote Control
Sending command messages
Basically, the commands used to control the E4991A are written in the E4991A COM
interface. The following two types of E4991A COM interfaces can be used. To use the
COM interface in combination with the GPIB command offered by the E4991A, it is
necessary to understand how to use GPIB command.
• COM interface
• COM interface combined with GPIB command
For the basic method of using the E4991A COM interface, refer to Chapter 14, “Outline of
Programming Using COM,” on page 237 and Chapter 18, “COM Interface Reference,” on
page 527.
To find a GPIB command provided by the E4991A, refer to “Learning about GPIB
commands” on page 29.
Remote mode
Unlike previous Agilent models, the E4991A does not have a “Remote mode” that
automatically locks up operation of the front panel’s hardkeys when it is controlled through
E4991A COM object. If necessary, the E4991A’s front panel can be locked by a command.