Rice Lake iQUBE2 Digital Diagnostic Junction Box - Manual (Page 39)

Calibration 35
4. Make sure all weight is removed from the scale and press the Cal-Match softkey to begin the calibration. Cal-
Match calibration can be cancelled by pressing the CLEAR key or the CANCEL softkey.
Cal-Match will overwrite any previous calibration. You can discard the Cal-Match and revert to the previous
calibration by cycling power to the
iQUBE 2
before pressing Save and Exit.
5. After initializing, the display will show Cal-Match Point 1. Place a test weight over first cell or section to be
tested, then press ENTER .
It is not necessary to measure the cells in any particular order.
6. Once the iQUBE 2 has read the cell, the 920i display will show Cal-Match Point 2 .
7. Move the test weight to the next cell or section and press ENTER . Repeat until all cells have been measured.
8. When the last cell has been measured, the iQUBE 2 automatically sets the load cell trim factors. Press TWEAK
or ENTER to view trim values.
9. Press UP ( ) to return to the SCALES menu. Press the Save and Exit softkey to exit setup mode. To continue
with linearization, see Section 4.1.2.
4.1.2 Advanced Calibration Options
Temporary zero calibration and theoretical calibration are available regardless of the number of load cells con-
nected or the calibration type selected. The calibration options described in this section are optional. Basic calibra-
tion can be performed by following the instructions in Section 4.1.1.
Linearization
Five-point linearization is used to compensate for non-linear scale systems by calibrating the indicator at up to five
additional points between the zero and span calibrations. Linearization is optional; if linearization values have pre-
viously been entered, these values are reset to zero during the zero calibration.
1. Once basic calibration is complete, with WLIN displayed, press ENTER or DOWN to go to the first lineariza-
tion point ( PT-> 1 ).
2. Place test weights on the scale and press ENTER twice to display the weight value entry prompt.
3. Use the numeric keypad to enter the actual test weight value. Press ENTER to accept the value.
4. Enter the Calibrate submenu. Use the CALIBRATE softkey to begin calibration of the linear point. When com-
plete, the A/D count for the linear calibration is displayed. Press ENTER to acknowledge the value.
5. Use the LEFT and RIGHT keys to enter the next linearization point PT-> 2 .
6. Repeat for up to five linearization points.
7. To exit the linearization parameters, press
UP to return to WLIN . To perform a rezero, see Section .
Selection Description
Last
Zero Recalls the last established zero value to allow calibration without removing test weights or
product from the scale. This must be followed by a span calibration.
Temp
Zero Temporarily zeroes the displayed weight of a non-empty scale. After span calibration, the
difference between the temp zero and the previously calibrated zero value is used as an off-
set. Requires a previous calibration. This must be followed by a span calibration.
Table 4-3. Advanced options
WARNING
Note