Scaime eNod4-B - Zero Calibration; Span Coefficients 1;2;3; Span Adjusting Coefficient; Calibration Place G Value; Place of Use G Value

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User manual SCAIME: NU-soft-eNod4B-E-0716_236704-C.doc
11.3.6 Zero calibration
Zero calibration value corresponds to the A/D converter points measured during the ‘zero acquisition’ step of a
physical calibration.
For a theoretical calibration this value must be set. It can be set automatically with the ‘zero adjustment’ command.
Note: To be applied, any modification of this setting must be followed by an EEPROM back up and device reboots
(hardware or software).
Admitted values : from 0 up to +-10000000
11.3.7 Span coefficients 1/2/3
These coefficients are computed and written during calibration process. Writing these coefficients could be done if
you want to restore a previous calibration.
Note: To be applied, any modification of this setting must be followed by an EEPROM back up and device reboots
(hardware or software).
Admitted values : different from 0.
11.3.8 Span adjusting coefficient
The ‘span adjusting coefficient’ allows adjusting initial calibration. Adjustment applies linearly on the whole calibration
curve. This coefficient has a 10
-6
factor (1000000 is equivalent to a span adjusting coefficient that is equal to 1).
Note: To be applied, any modification of this setting must be followed by an EEPROM back up and device reboots
(hardware or software).
Admitted values : from 900000 up to 1100000.
11.3.9 Calibration place g value / place of use g value
When the calibration place and the place of use of a measuring chain are different, a deviation can appear due to the
difference of g (gravity) between the 2 places.
The eNod4 calculates a ratio applied to the measure which compensates the difference of gravity between the 2
places.
The g value are expressed in 10
-6
m.s
-2
(9805470 is equivalent to g = 9.805470 m.s
-2
).
The eNodView software can help to determine the g value of a place.
Note: To be applied, any modification of this setting must be followed by an EEPROM back up and device reboots
(hardware or software).
Admitted values : different from 0.
11.3.10 Zero offset
The ‘Zero offset’ value contains the offset in factory calibrated points that can be added/subtracted (if its value is
positive or negative) to the zero calibration value when using the ‘zero offset’ functional command. Once the
command has been successfully achieved, this register is set to 0.
Note: The ‘Zero offset’ value is not stored into EEPROM memory and is always equal to 0 after a device power-up or a
software reset
Admitted values: different from 0.