Mmath - Agilent Technologies 3458A User Manual

MMATH

Example

MMATH

Syntax
200 Chapter 6 Command Reference
FIFO (MEM FIFO command), and reading memory must be empty (done by
executing the MEM FIFO command) before samples are taken. If these
requirements are not met when the trigger arm event occurs, an error is
generated.
•
Query Command. The MFORMAT? query command returns the present
memory format. Refer to "Query Commands" near the front of this chapter for
more information.
•
Related Commands: MCOUNT?, MEM, MSIZE, RMEM
10 OUTPUT 722;"NPLC 10"
20 OUTPUT 722;"DCV 7"
30 OUTPUT 722;"MATH OFF"
40 OUTPUT 722;"MEM FIFO"
50 OUTPUT 722;"MFORMAT DINT"
60 END
When recalling the stored data, make sure that the multimeter is configured as it
was when you stored the data.
Memory Math. Enables or disables post-process math operations.
MMATH [operation_a] [,operation_b]
operation
The operation parameter choices are:
operation Numeric
Parameter Equiv.
OFF 0
CONT 1
CTHRM 3
DB 4
DBM 5
FILTER 6
!10 PLCS OF INTEGRATION TIME
!DC VOLTAGE, 10V RANGE
!SHUTS OFF MATH FUNCTIONS
!ENABLES READING MEMORY (FIFO MODE)
!SELECTS DINT MEMORY FORMAT
Description
Disables all post-process math operations
Enables the previous math operation. To resume two
math operations, send MMATH CONT,CONT
Result = temperature (Celsius) of a 5kW thermistor
(40653B). Function must be OHM or OHMF (10kW
range or higher).
Result = 20 x log (reading/REF register). The REF
10
register is initialized to 1, yielding dBV.
Result = 10 x log (reading
10
Function must be ACV, DCV, or ACDCV.
Result = output of exponentially weighted digital
low-pass filter. Response is set by DEGREE register.
2
/RES register/1mW).