Cycle
Description
Current displacement
cycles
A record of the number of cycles performed since the instrument
was last calibrated.
Deviation at home position
The difference between the displacement device’s home position
at the beginning of the calibration procedure and the home pos-
ition at the end of the procedure. This number is measured in
steps of the motor (counts). A few counts difference is acceptable;
zero is ideal.
Number of displacement
cycles
A record of the number of cycles performed since the instrument
was first calibrated.
Points
Calibration readings are taken at 10 points. For each point, the
report lists:
Displacement. The number of steps of the motor from home
position to the point at which force sensor data is recorded.
Expected Force (counts). The force exerted by the
displacement device at this point, calculated by the instrument
from the spring constant and the displacement distance.
Force Reading. The uncorrected value from the analog to digital
electronics.
Slope
Calculated using the data from the points. This data are used
internally by the analyzer to calibrate the force transducer (con-
verts analog force sensor readings into Newtons, after removing a
zero offset).
Standard deviation
Calculated using the points and slope data. A standard deviation
should be less than 1.0.
Force Calibration Report
GeoPyc 1365 Operator Manual
136-42800-01 (Rev -) — Dec 2016
3 - 11
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