In order to minimize the errors you should
also maintain the signal amplitudes at the in
-
puts, so that the deviation between calibration
and measurement is kept as small as possible.
The same restrictions as for Method 1 regard
-
ing frequency and amplitude apply to this
method, i.e. you should recalibrate whenever
one of these signal parameters changes.
Residual Systematic Error:
By mathematically (on the bench or in the
controller) applying corrections according to
one of the methods mentioned above, the sys
-
tematic error will be reduced, but not fully
eliminated. The residual time delay error will
most probably be negligible, but a trigger
level error will always remain to a certain ex-
tent, especially if the temperature conditions
are not constant.
Possible Errors 4-21
Measuring Functions
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