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daq-and-datalogging:documents:digital-io-techniques [2023/06/14 06:15] – created Scandiwebdaq-and-datalogging:documents:digital-io-techniques [2023/07/27 21:30] (current) – Arthur Brown
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-====== TechTip: ====== +====== TechTip: Digital I/O Techniques ======
- +
-===== Digital I/O Techniques =====+
  
 **Objective**\\  **Objective**\\ 
 To provide an overview of the following digital I/O techniques used in the data acquisition (DAQ) industry: To provide an overview of the following digital I/O techniques used in the data acquisition (DAQ) industry:
-  **Pull-up and pull-down resistors +  *Pull-up and pull-down resistors 
-  **TTL to solid state relays +  *TTL to solid state relays 
-  **Voltage dividers +  *Voltage dividers 
-  **Low-pass filter+  *Low-pass filter
      
 \\  \\ 
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 <WRAP group> <WRAP group>
 <WRAP column half> <WRAP column half>
-{{https://files.digilent.com/resources/measurement-computing/Reference Images/pullup.png?275x278}}+{{https://files.digilent.com/reference-images/pullup.png?275x278}}
 </WRAP> </WRAP>
  
 <WRAP column half> <WRAP column half>
-{{https://files.digilent.com/resources/measurement-computing/Reference Images/pulldown.png?275x240}}+{{https://files.digilent.com/reference-images/pulldown.png?275x240}}
 </WRAP> </WRAP>
 </WRAP> </WRAP>
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 <WRAP centeralign> <WRAP centeralign>
-{{https://files.digilent.com/resources/measurement-computing/Reference Images/voltdivider.png?338x272}}\\ +{{https://files.digilent.com/reference-images/voltdivider.png?338x272}}\\ 
 **Figure 3.** Voltage divider schematic **Figure 3.** Voltage divider schematic
 </WRAP> </WRAP>
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 <WRAP centeralign> <WRAP centeralign>
-{{https://files.digilent.com/resources/measurement-computing/Reference Images/lowpassfilter.png?338x272}}\\ +{{https://files.digilent.com/reference-images/lowpassfilter.png?338x272}}\\ 
 **Figure 4.** Low-pass filter schematic **Figure 4.** Low-pass filter schematic
 </WRAP> </WRAP>
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 | Fc = 1/(2πRC)  | Where π = 3.14...\\ R = ohms\\ C = farads\\ Fc = cut-off frequency in cycles/second  | | Fc = 1/(2πRC)  | Where π = 3.14...\\ R = ohms\\ C = farads\\ Fc = cut-off frequency in cycles/second  |
 | R = 1/(2πCFc)  |:::                                                                                   | | R = 1/(2πCFc)  |:::                                                                                   |
-\\  +\\
- +
-   +
-More Information\\  +
-Please contact Measurement Computing Corporation if you have any questions or if you would like any further information.\\ +
  
-Knowledgebase: [[https://kb.mccdaq.com/Default.aspx | kb.mccdaq.com]]\\  +**More Information**\\  
-Phone: 508-946-5100\\  +Please reach out to our support team on the Digilent Forum if you have any questions: [[https://forum.digilent.com/]]
-Fax: 508-946-9500\\ +
      
-Additional TechTips are available on our [[https://www.mccdaq.com/Technical-Articles | Data Acquisition Technical Articles web page.]]+Additional TechTips are available here in Digilent Reference: [[start]]