Measurement Computing Data Translation DT3034 User Manual page 131

Chapter 8
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.
• 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.
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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.
Signal
Analog Output 0+
Analog Input 2
Signal
Analog Output Return
Analog Input 2 Return
Signal
Analog Output 1+
Analog Input 3
DT740 Screw Terminal
TB41
TB5
DT740 Screw Terminal
TB42
TB6
DT740 Screw Terminal
TB43
TB7