Measurement Computing PCI-DDA02/12 - Manual (Page 13)

PCI-DDA02/12 User's Guide Calibrating the PCI-DDA02/12
13
"In-system" calibration
The PCI-DDA02/12 is calibrated at the factory for the correct voltages at the I/O connector. For more precise
application of voltages at the "system end", we can provide a version of InstaCal that allows you to calibrate the
board within your system for correct voltages at your field connection. This calibration lets you remove the
effects of voltage drops caused by IR loss in the cable and connector for resistances up to 1 Ω. This calibration
also allows you to zero out errors in any external signal conditioning up to approximately ±10 mV.
In most applications, the version of InstaCal that ships with the board provides the accuracy specified. If your
application has unusual requirements, such as long cables, you may need the "in-system version" to achieve this
accuracy.
Contact technical support by phone, fax, or e-mail for details regarding the "in-system" calibration feature.
 Phone: 508-946-5100 and follow the instructions for reaching Tech Support
 Fax: 508-946-9500 to the attention of Tech Support
 Email:
[email protected]
For international customers, contact your local distributor. Refer to the International Distributors section on our
web site at
www.mccdaq.com/International .