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9.4
User Calibration for Output Deviation
Deviation in output signals can be occurred due to the various conditions such as connected devices, cables and
connection methods. Users can calibrate the deviation values of output signals.
Terms Used
9.4.1
Low End and High End: Minimum and maximum values of the selected output range.
Low Limit and High Limit: Minimum and maximum values of output signal which the specific channel can
output in selected output range.
Low Value and High Value: Digital data when it outputs the Low End and High End values.
(Example) With 0~5 [V] Output Range
Figure 9-7. Values When Output Range is 0~5 [V]
Example of Using User Calibration
9.4.2
(Example) Output Deviations and User Calibration Function when output range is 0~5 [V]
In the Figure 9-8, it does not output 0~5 [V] exactly for 0~25,000 digital data, and there is output deviations.
Digital Data
0 ⇒ 0.2 [V] Output
Digital Data
25,000 ⇒ 5.2 [V] Output
First, to use the user calibration function, reset the Low Value and High Value for Low End (0 V) and High End
(5 V). Refer to the Figure 9-8 for the reset.
For Low End (0 V): Reset the Low Value to -1,000.
For High End (5 V): Reset the Low Value to 24,000.
Then, the reset values are used for the user calibration converting the digital data. Finally, it outputs correct
analogue output signals corresponding to the digital data.
Digital Data
0 ⇒ Converted to -1,000 by the user calibration ⇒ 0 [V] Output
Digital Data
10,000 ⇒ Converted to 9,000 by the user calibration
⇒ 2 [V] Output
Digital Data
25,000 ⇒ Converted to 24,000 by the user calibration ⇒ 5 [V] Output
Digital Data
Voltage
(High Limit)5.25 V
25000
(High Value)
0
(Low Value)
(Low Limit)-0.25 V
(High End)5 V
(Low End)0 V
26250
