Specifications

550 Appendix A

Manual Changes

To adapt this manual to your E4991A, refer to Table A-1 and Table A-2.

Agilent Technologies uses a two-part, ten-character serial number that is stamped on the

serial number plate (

Figure A-1). The first five characters are the serial prefix and the last

five digits are the suffix.

Figure A-1 Serial Number Plate

Change 1

Remote control using E4991A macros

This section describes the system structures and command sets used for controlling the

E4991A and peripheral equipment with the instrument’s macro functions.

NOTE The E4991A is shipped with a macro function. A macro allows you to automatically

execute a series of multiple commands with a single command. Using a macro allows you

to combine the steps of a complicated procedure into a single step for a wide variety of

applications. A macro can also be used to control peripheral equipment. The E4991A VBA

(Visual Basic for Application) is the programming language used to execute macro

functions.

System structure

Connect the E4991A to any peripheral equipment that can be connected with a GPIB cable.

Table A-1 Manual Changes by Serial Number

Serial Prefix or Number Make Manual Changes

JP2KH or MY432 Change1

JP1KH, JP2KH or MY432 Change 2

Table A-2 Manual Changes by Firmware Version

Version Make Manual Changes