MMATH
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
Example 10 OUTPUT 722;"NPLC 10" !10 PLCS OF INTEGRATION TIME
20 OUTPUT 722;"DCV 7" !DC VOLTAGE, 10V RANGE
30 OUTPUT 722;"MATH OFF" !SHUTS OFF MATH FUNCTIONS
40 OUTPUT 722;"MEM FIFO" !ENABLES READING MEMORY (FIFO MODE)
50 OUTPUT 722;"MFORMAT DINT" !SELECTS DINT MEMORY FORMAT
60 END
When recalling the stored data, make sure that the multimeter is configured as it
was when you stored the data.
MMATH
Memory Math. Enables or disables post-process math operations.
Syntax MMATH [operation_a] [,operation_b]
operation
The operation parameter choices are:
operation
Parameter
Numeric
Equiv. Description
OFF 0 Disables all post-process math operations
CONT 1 Enables the previous math operation. To resume two
math operations, send MMATH CONT,CONT
CTHRM 3 Result = temperature (Celsius) of a 5kW thermistor
(40653B). Function must be OHM or OHMF (10kW
range or higher).
DB 4 Result = 20 x log
10
(reading/REF register). The REF
register is initialized to 1, yielding dBV.
DBM 5
Result = 10 x log
10
(reading
2
/RES register/1mW).
Function must be ACV, DCV, or ACDCV.
FILTER 6 Result = output of exponentially weighted digital
low-pass filter. Response is set by DEGREE register.
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