Fluke RUSKA 7750i User Manual page 29

Zero Coefficients
CsH Zero correction for High FSR (Full-Scale Resistors) Value is in counts
(7,381,975 = full scale of current sensor).
CsL Zero correction for Low FSR. Value is in counts (7,381,975 = full scale of
low FSR)
HsZ Hardware zero correction. (0 to 4095, center is 2048).
SsZ Zero corrections scaling factor. Ratio of High FSR to Low FSR. Used only
when Case Effect Coefficient or Oven Temperature Coefficient are non-zero.
s = 0 for high range sensor, s = 1 for low range sensor.
Range Coefficients
KnF 0 = Range Unused
4 = Valid High FSR Range
5 = Valid Low FSR Range
Kn0, Kn1, Kn2 Calibration constants for range
A
Where is the zero corrected counts (7,381,975 = full scale of current range) and
the calibrated counts (7,381,975 = full scale of current sensor)
KnH Zero corrected counts for upper limit of range. When the zero corrected
counts from the A/D exceed this value the next higher range will be used
(if possible). (7,381,975 = full scale of current range)
KnL Zero corrected counts for lower limit of range. When the zero corrected
counts from the A/D are below this value the next lower range will be used
(if possible). (7,381,975 = full scale of current range)
n = Range number (1 – 4 for high range sensor, 5 – 8 for low range sensor)
= K ∗ +
2
B A
n 2
48
2
K ∗ +
A K
n 1
n 0
24
2
Theory of Operation
Software
B
is
2-11
2