User manual

C-4 Data Flow 2400 Series SourceMeter
®
User’s Manual
CALCulate[1]:DATA?
If CALCulate1 is enabled, Sample Buffer data is fed to the CALC1 block where the
results for the selected math expression are calculated. The CALC1:DATA? com-
mand will read the results of the math expression. If, for example, 20 data arrays
in the Sample Buffer yield 10 math expression results, then CALC1:DATA? will
acquire 10 readings (results).
CALCulate2:DATA?
If CALCulate2 is enabled, Sample Buffer data and CALC1 math expression
results become available to the CALC2 block for limit testing. Depending on the
selected feed, limit testing can be performed on the voltage, current, resistance,
or timestamp readings of Sample Buffer data, or it can be performed on the
CALC1 math expression results. If NULL (rel) is enabled, the readings used for
limit testing will be the results of the null operation.
The CALCulate2:DATA? command acquires the readings used for limit testing.
TRACe:DATA?
If the data store is enabled, Sample Buffer data, CALC1 results and CALC2 read-
ings become available to the TRACE block for storage. The selected feed deter-
mines which group of readings are stored.
The TRACe:DATA? command reads the entire contents of the data store.
CALCulate3:DATA?
Statistical information (minimum, maximum, mean, standard deviation, and peak-
to-peak) is available for measure readings stored in the buffer. If the readings in
the data store came directly from the Sample Buffer, then the selected statistic
calculation will be performed on all enabled measurement functions. The calcula-
tion results are returned in the following fixed order:
VOLTage result, CURRent result, RESistance result
When the TRACE buffer is feeding off CALC1 or CALC2, the selected statistic cal-
culation is performed on the selected feed. Thus, a single statistic result is
acquired for each reading stored in the data store.
The CALCulate3:DATA? command acquires the results of the selected calcula-
tion.