Keysight Technologies 3458A Guide D'utilisation page 176

4 Making Measurements
Up to two math operations can be enabled at the same time. The operations are
performed on each reading in the order listed in the command. For example, to
enable the NULL and SCALE operations, send:
OUTPUT 722;"MATH NULL, SCALE" !ENABLEs REAL-TIME NULL & SCALE
or
OUTPUT 722;"MMATH NULL, SCALE" !ENABLES POST-PROCESS NULL & SCALE
To disable all enabled math operations, send:
OUTPUT 722;"MATH OFF" !DISABLES ALL REAL-TIME MATH OPERATIONS
or
OUTPUT 722;"MMATH OFF" !DISABLES ALL POST-PROCESS MATH OPERATIONS
Later you can re-enable the operation(s) that were disabled by the MATH OFF or
MMATH OFF command. To re-enable a single math operation (if two operations
were previously enabled, this will enable only the first of those two operations),
send:
OUTPUT 722;"MATH CONT" !RE-ENABLES ONE REAL-TIME MATH OPERATION
or
OUTPUT 722;"MMATH CONT" !RE-ENABLES ONE POST-PROCESS MATH OPERATION
To re-enable two previously enabled math operations send:
OUTPUT 722;"MATH CONT,CONT" !RE-ENABLES TWO REAL-TIME MATH OPERATIONS
or
OUTPUT 722;"MMATH CONT,CONT" !RE-ENABLES TWO POST-PROCESS MATH
OPERATIONS
176 Keysight 3458A User's Guide