Keysight Technologies 3458A Guide D'utilisation page 177

Math registers
Table 4-4
operations.
Table 4-4
Register name
DEGREE
LOWER
MAX
MEAN
MIN
NSAMP
OFFSET
PERC
REF
RES
SCALE
SDEV
UPPER
PFAILNUM
You can write a value to any math register (except SDEV) using the SMATH
command. For example, to place the value of 22 in the DEGREE register, send:
OUTPUT 722;"SMATH DEGREE,22"
You can read the value in any math register using the RMATH command. For
example, the following program reads and prints the value in the RES register.
10 OUTPUT 722;"RMATH RES"
20 ENTER 722;A
30 PRINT A
40 END
Keysight 3458A User's Guide
shows the registers used by the real-time or post-process math
Math registers
Register contents
Time constant for FILTER and RMS
Smallest reading in STATS
Upper limit for PFAIL operation
Average of readings in STATS
Lower limit for PFAIL
Number of samples in STATS
Subtrahend in NULL and SCALE operations
Percent value for PERC operation
Reference value for DB operation
Reference impedance for DBM operation
Divisor in the SCALE operation
Standard deviation in STATS
Largest reading in STATS
The number of readings that passed PFAIL before a failure was encountered
Making Measurements 4
177