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Minor tweak to comedi_get_softcal_converter description.

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This commit is contained in:
Frank Mori Hess 2008-02-08 18:28:26 +00:00
parent d7434f79bb
commit d73685a254
1 changed files with 3 additions and 3 deletions
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6
doc/calibration_funcref.txt
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@ -171,12 +171,12 @@ Description:
Whether or not the result of this function actually depends on the <parameter>channel</parameter>
parameter is
hardware dependent. For example, a multiplexed analog input will typically use the same
calibration for all input channels. Analog outputs will typically use different calibrations
hardware dependent. For example, the calibration of a multiplexed analog input will typically
not depend on the channel, only the range. Analog outputs will typically use different calibrations
for each output channel.
Software calibrations are implemented as polynomials (up to third order). Since the inverse
of polynomials of order higher than one can't be represented exactly as another polynomial, you
of a polynomial of order higher than one can't be represented exactly as another polynomial, you
may not be able to get converters for the "reverse" direction. For example, you may be
able to get a converter for an analog input in the COMEDI_TO_PHYSICAL direction, but not
in the COMEDI_FROM_PHYSICAL direction.