Measurement Computing Data Translation DT3034, User Manual

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Chapter 8
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Calibrating the Analog Output Subsystem
This section describes how to configure the DT740 screw terminal panel for an internal or
external meter, and how to use the DT3034 Calibration Utility to calibrate the analog output
subsystems of the board.
Choosing a Calibration Meter
To calibrate the analog output circuitry, you can use either of the following meters:
• The internal A/D converter (ADC) on the DT3034 board.
Using the board’s ADC as an input to the analog output circuitry allows you to calibrate
the analog output circuitry quickly without using external equipment.
• An external precision meter.
The following sections describe how to configure for calibration using either of the supported
meters.
Configuring for the Internal ADC
To calibrate DAC0 using the internal ADC, do the following:
1. Connect Analog Out 0+ (TB41) to Analog In 2 (TB5).
2. Connect Analog Out Return to Analog In 2 Return.
To calibrate DAC1 using the internal ADC, do the following:
1. Connect Analog Out 1+ to Analog In 3.
Signal DT740 Screw Terminal
Analog Output 0+ TB41
Analog Input 2 TB5
Signal DT740 Screw Terminal
Analog Output Return TB42
Analog Input 2 Return TB6
Signal DT740 Screw Terminal
Analog Output 1+ TB43
Analog Input 3 TB7