Roland@pcmtec Posted January 29, 2020 Share Posted January 29, 2020 (edited) To log up to 8 analog inputs (or 16 with a different cable) you can use the following analog input cable from DigiKey. It is approximately $45 + delivery. Free delivery if you spend over $60. https://www.digikey.com.au/product-detail/en/DLP-IO8-G/813-1010-ND/1894342/?itemSeq=286026595 The driver is already included in the PCMTEC Editor installer so no extra software is needed. They do have a package on their website to test the cable separately to our software if you want which can be downloaded here. https://www.dlpdesign.com/usb/io8.shtml To wire up your DLP cable you can read the data sheet here or follow our test pictures below. http://www.dlpdesign.com/usb/dlp-io8-ds-v17.pdf Wiring If you have 1 wideband, simply wire the ground to the ground pin, wire the postive input to pin 1, next loop the rest of the input pins (2,3,4,5,6,7,8) to ground to stop the signals floating. You don't have to do this, but the inputs will likely read 5v if you don't. If you have 2 widebands, simply do the same and wire the second sensor to pin 2 and remove the ground loop from pin 2. Here we have looped the ground pins on input 5-6-7-8-GND to stop the signals floating. Ensure drivers are correctly installed. If not then use the direct link: http://www.dlpdesign.com/cdm21228certified.zip Show look like this inside Device Manager: In PCMTEC press the DLP button in the datalogging screen to connect to the cable. Next select which of the 8 analog inputs you would like to log here: To To change the description/units press F2 to enter Edit mode, then click in the Units field and type the new Units Note: Unit Edit - Version 2.0 onwards only To modify the voltage lookup table right click and pick "Equation" You can enter in a new voltage lookup table here to suit your wideband etc. 5v = 5120 and 1v = 1024. Eg 1024 * voltage = A/D count If you have data from your wideband documentation that for example specified 1.2 lambda at 4.5v and 0.55 lambda at 1v you would enter the data as follows: 1v *1024 = 1024 A/D 4.5v * 1024 = 4608 A/D So your table will be: 0, 0.55 1024; 0.55 4608; 1.2 5120; 1.2 ..repeat 5120; 1.2 This will clamp your lambda reading between 0.55 and 1.2 lambda. Display Range To adjust the display range, right click on the scalar and Adjust Range (or right click on the chart scales) You can then see the adjusted range in the chart Edited July 13, 2022 by Matt@pcmtec Updated images 1 1 Quote Link to comment Share on other sites More sharing options...
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