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CALCulate Subsystem
TVS600 & TVS600A Command Reference
2–27
CALCulate:FEED[1]
CALCulate:FEED[1]?
Sets or queries the source of data for the specified CALCulate block. The
calculations you set for a CALC block are performed on the source chosen with
this command when using the CALC:PATH command. The source may be from
any channel, reference, or a SENSe function; it is not tied to the CALC block
number. For example, the FEED1 for CALC2 could be “XTIM:VOLT 1” or
“XTIM:VOLT 3.” Additionally, more than one CALC block can operate on the
same source.
Trace names and function strings may be used interchangeably for the source
parameter <sense_func>. The query form always returns the function strings.
When you perform a calculation with the command CALC:PATH:EXPRession,
the value of :FEED1 can be referenced as “%1” (or by name; CHAN1, for
example) within the expression. Calculations are not performed on the :FEED1
source unless explicitly referenced in the CALC expression. See CALC:PATH
and CALC:PATH:EXPR commands.
When specifying calculations that require more than one waveform, such as gain,
phase, or delay, :FEED1 specifies the reference waveform and :FEED2 specifies
the target waveform. The target waveform is measured with respect to the
reference waveform; for example,1V in :FEED2 measured with respect to 2V in
:FEED1 yields a gain (attenuation) of .5.
CALCulate<n>:FEED[1] <sense_func>
CALCulate<n>:FEED[1]?
<n>
1
Query response
1
2
3
4
Not applicable
1
The calculate block number <n> selects one of four calculate blocks. If you omit <n>,
the default is calculate block 1.
Syntax
Parameters