Keysight Technologies 3458A Guide D'utilisation page 10

Chapter 7 BASIC Programming Language
This chapter describes the BASIC commands supported by the 3458A's internal
BASIC language operating system. With this feature, many of your special
requirements can be easily satisfied by writing and downloading a simple BASIC
subprogram to customize the multimeter's behavior.
Appendices
The appendices contain the multimeter's specifications, information on the GPIB
commands recognized by the multimeter, information on locking-out the front/
rear terminals switch, and contains product notes concerning digitizing and
maximizing the multimeter's reading rate and throughput.
10 Keysight 3458A User's Guide