Filter
Top Products
C-1
Appendix CAppendix C Analog Input and Output Analog Input and Output
Calibration ProceduresCalibration Procedures
C.1C.1 UDAS Analog Input Circuit Calibration UDAS Analog Input Circuit Calibration
ProceduresProcedures
The analog input section of each UDAS unit is calibrated at the factory prior to shipment. If your
application requires periodic calibration checks or if inaccuracies occur, use the procedures below
to calibrate the UDAS unit. This calibration is accomplished by the adjustment of potentiometers
on the UDAS unit’s printed circuit board.
This calibration procedure requires the utility software provided with the unit, or some other
software such as Visual Designer for displaying the Analog to Digital converter (A/D) results in
counts format and for setting required gains and ranges.
Equipment Required:
• Precision voltmeter accurate to 100µV over a range of ±10 V.
• Precision voltage calibrator accurate to 1.0µV over a range of ±1 V and accurate to 100µV over
a range of ±10 V.
• Termination panel for connecting signals and test instruments. A termination panel is built in
to models UDAS-1001E-3 and UDAS-1001E-4.
• 1.4 mm flat-head insulated screwdriver for adjusting potentiometers.
• #1 Phillips screwdriver for opening the unit’s case.
• USB equipped host computer.
C.1.1C.1.1 Removing the UDAS Unit’s CoverRemoving the UDAS Unit’s Cover
1. Disconnect the unit from the host computer or any external power supply.
2. Using a #1 Phillips screw driver, remove the two small screws at the far left and right ends of
the unit’s front panel next to the USB and power connectors.
3. Remove the front panel, then slide the case cover towards the front of the unit.
CAUTION:
Static sensitive device warning! To avoid damage to the unit from static electricity,
always use proper static protective procedures (such as use of a grounded wrist
strap) when handling or adjusting this device.