Sperry Marine NAVIKNOT 600 SD, Operation, Installation And Service Manual

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056353/J NAVIKNOT 600 SD
7-2 Doppler Transducer Calibration
Figure 7-1:
Effect of calibration
table entries
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calibration table empty:
linear transducer characteristic assumed;
display and output = 0.0 kn at raw data value of 0.0 kn
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zero point calibrated
linear transducer curve is offset by zero point calibration value
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one additional point calibrated (highest table entry)
calibration points joined by straight line (linear interpolation)
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additional intermediate points calibrated
calibrated range is split into linear segments of different slope
raw data (input)
calibrated data (output)
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zero point
(true water speed = 0.0 kn)
raw data (input)
calibrated data (output)
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raw data (input)
calibrated data (output)
highest cal.
table entry
intermediate cal.
table entry
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raw data (input)
calibrated data (output)