Product details

• Catalog Description:
• DSAX 110 Analog Input/Output Board
  
• Long Description:
• DSAX 110 Analog Input / Output Board
  Analog Input: Eight channels, directly grounded inputs
  (single ended) resolution 12 bits unipolar 0 to + 10 V
  or 0 to + 20 mA, 4 to 20 mA shunt 250 W 0.05% (over shunt 500 W 0.1% on
  DSTA 001)
• Product Net Depth / Length:
• 0 mm
  
• Product Net Height:
• 0 mm
  
• Product Net Width:
• 0 mm
  
• Product Net Weight:
• 0.4 kg

Analog input circuit

In this system, the temperature is measured by thermistor directly, and a primary capacitance filter is added. The external switching temperature detection circuit is equipped with diode limiting protection because of its larger interference. For different resistance values of the sensor, the corresponding different partial voltage values are input to the A/D conversion port of the PIC16C72 microcontroller, and converted into digital signals in the microcontroller. The detection circuit has the advantages of simple structure and high cost performance. And because the MCU used is 8 bits, the temperature conversion accuracy is high, which can be 0.5 ° C, fully meeting the signal detection accuracy requirements of air conditioning.

The detection of overcurrent signal does not need to go through comparator, saving resources; Instead, the analog signal is directly input after rectifying and dividing the voltage, and it is detected every 500μs by the A/D converter of the single chip microcomputer, and the software is compared to confirm whether the current is overcurrent.

Analog output generally refers to the analog output, it is the analog output of the computer or control system, in the single-chip microcomputer control system, the analog output signal in a large number, they are the digital signal output by the single-chip microcomputer after the analog output channel processing.

What is the difference between analog output and digital output

The output of the analog signal is a continuous waveform, according to the size of the instantaneous value, directly acting on the load, such as the computer sound card output, the waveform is as follows:

The output of the digital signal is high and low, and the load side needs a digital processing circuit to further convert the received pulse into the required signal

 ABB series of products