C-4 Data Flow Models 2500 and 2502 User’s Manual
CALCulate[1]:DATA? and CALCulate2:DATA?
If CALCulate1 or CALCulate2 is enabled, SENS1 or SENS2 data is fed to the CALC1
(channel 1) or CALC2 (channel 2) block where the results for the selected math function
are calculated. The CALC1:DATA? or CALC2:DATA? command will read the results of
the math function. If CALC1 or CALC2 is enabled, that block is bypassed, and SENS1 or
SENS2 data is fed directly to CALC3 or CALC4.
CALCulate3:DATA? and CALCulate4:DATA?
If CALCulate3 or CALCulate4 (channel 1 or channel 2 REL) is enabled, data is fed to the
CALC3 (channel 1) or CALC4 (channel 2) block where the programmed or acquired REL
value is subtracted from the data. CALC3 data comes from either CALC1 or SENS1,
depending on the selected feed. Similarly, CALC4 data comes from CALC2 or SENS2,
depending on the selected feed. The CALC3:DATA? or CALC4:DATA? command will
read the results of the REL operation. Note that CALC3 and CALC4 can also be fed to the
CALC7 block for limit testing, and to the data store buffer for :TRACe:DATA?
CALC8:DATA? buffer statistics.
CALCulate5:DATA? and CALCulate6:DATA?
If CALCulate5 (RATIO) or CALCulate6 (DELTA) is enabled, data is fed to the CALC5 or
CALC6 block where the ratio or difference between measurement data for the two chan-
nels is calculated. The CALC5:DATA? returns the calculated ratio result, and
CALC6:DATA? reads the results of the delta computation. Note that CALC5 and CALC6
can also be fed to the CALC7 block for limit testing, and to the data store buffer for
:TRACe:DATA? CALC8:DATA? buffer statistics.
CALCulate7:DATA?
If CALCulate7 is enabled, data becomes available to the CALC7 block for limit testing.
Depending on the selected feed, limit testing can be performed on the channel 1 measure-
ment function, channel 2 measurement, RATIO, or DELTA, If null (rel) is enabled, the
readings used for limit testing will be the results of the null operation.
The CALCulate7:DATA? command acquires the readings used for limit testing.
TRACe:DATA?
If the data store is enabled, data becomes available to the TRACE block for storage. The
selected :FORM:ELEM:TRAC data elements determines which group of readings are
stored (CALC3 through CALC6). The TRACe:DATA? command reads the entire contents
of the data store.
CALCulate8:DATA?
Statistical information (minimum, maximum, mean, standard deviation, and peak-to-peak)
is available for measure readings stored in the buffer. The CALCulate8:DATA? command
acquires the results of the selected statistical calculation. The data source for CALC8 is
determined by the :DISPlay:MODE command.
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