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Multimeter Command Reference 73Chapter 3
CALCulate
There are five math operations available (AVERage, DB, DBM, LIMit, and NULL), only
one can be enabled at a time. Each performs a mathematical operation on every reading
or stores data on a series of readings. The selected math operation remains in effect
until you disable it, change functions, turn off the power, or perform a remote interface
reset. The math operations use one or more internal registers. You can preset the values
in some of the registers, while others hold the results of the math operation.
The following table shows the math/measurement function combinations allowed.
Each “
X” indicates an allowable combination. If you choose a math operation that is
not allowed with the present measurement function, math is turned off. If you select
a valid math operation and then change to one that is invalid, a “Settings conflict”
error is generated over the remote interface. For null and dB measurements, you
must turn on the math operation before writing to their math registers.
Subsystem Syntax CALCulate
:AVERage:AVERage?
:AVERage:COUNt?
:AVERage:MAXimum?
:AVERage:MINimum?
:DB:REFerence <
value> |MIN|MAX
:DB:REFerence? [MIN|MAX]
:DBM:REFerence <
value> |MIN|MAX
:DBM:REFerence? [MIN|MAX]
:FUNCtion AVERage|DB|DBM| LIMit|NULL
:FUNCtion?
:LIMit:LOWer <
value> |MIN|MAX
:LIMit:LOWer? [MIN|MAX]
:LIMit:UPPer <
value> |MIN|MAX
:LIMit:UPPer? [MIN|MAX]
:NULL:OFFSet <
value> |MIN|MAX
:NULL:OFFSet? [MIN|MAX]
:STATe OFF|ON
:STATe?
Valid Math/Measurement Function Combinations
Measurements
DCV ACV DCI ACI Ω2W Ω4W Freq Per Ratio
AVERage XXXXXXXXX
DB XX
DBM XX
LIMit XXXXXXXXX
NULL XXXXXXXX