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6-5
The DriverLINX Calibration and Test Utility Setup Panel allows you to
select a device to test or calibrate.
Click the Board text box, and select the device you want to calibrate. The
configuration of your selected board will be displayed in the configuration
box.
Select the Screw Terminal you are using in the calibration and test. The
connection advice will be given according to the selected screw terminal.
If you are using a screw terminal other than the selected one, be sure you
measure the output of the right pin.
Select the “Calibrate” button on the Setup Panel for step by step
instructions to calibrate each channel:
1. The Calibration Panel contains an illustration of the offset and gain
potentiometers and instructions to adjust them.
2. Select a channel to calibrate from the “Channel to Calibrate” box.
3. Connect the positive and negative leads of a digital multimeter
(DMM) to the specified pins on the DDA-08/16 main I/O connector
(the positive lead to the D/A OUT pin of the analog output channel
and the negative lead to pin 37).
4. At this time, D/A offset in the Calibration mode check box should be
checked. If not, please check D/A offset first. Use a small screwdriver
to turn the specified offset potentiometer until the multimeter shows
the specified voltage or current (negative full scale).
5. When you have finished, check the D/A gain in the Calibration mode
check box.
6. Use the screwdriver to turn the specified gain potentiometer until the
multi-meter shows the specified voltage or current (positive full
scale).
7. Repeat steps 2 through 6 for each analog output channel.
8. Click Back button to return to Setup Panel or Exit to exit the program.
Note:
To ensure the accuracy of your board, make sure that you calibrate
all analog output channels.
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