The Extended Function Block provides four additional additional features to the DAQC2plate. These include:
1. Four calibrated 12 bit digital to analog converter outputs. These can be used for a number of functions
and, when used in the Function Generator Mode, are fast enough to generate common waveforms
such as sine, square, and triangle.
2. An auxiliary 5VDC power input. If your project requires more current than your RPi supply can provide
or if you want a guaranteed clean source of power, attach your supply to this pair of connectors.
3. A frequency counter - this protected input will measure the frequency of any digital signal.
4. Two PWM outputs - these 10 bit resolution PWMs output a 5V digital waveform and can be set from 0
to 100%. Very useful for DC motor and fan speed control.
Connector
Refer to the diagram at the top of this page as well as the one below to locate the terminals for each of the
Extended Functions:
Analog Outputs (DAC)
These outputs are on pins 1-4 of the Extended Function Block.
Specifications
● ESD protected
● Output swing of 0 4.095 volts
● 12 bit resolution
● Calibrated at factory for 0.2% accuracy using 3 point regression
● Resolution of 1mV
● Output noise of 110 μV rms
● Slew rate of 1 V/μs
● Nonlinearity of ±2 LSB
Functions
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