[{"data":1,"prerenderedAt":185},["ShallowReactive",2],{"blog-en-/en/blog/3-common-mistakes-in-analog-digital-conversion":3},{"id":4,"title":5,"body":6,"description":168,"extension":169,"meta":170,"navigation":180,"path":181,"seo":182,"stem":183,"__hash__":184},"en_blog/en/blog/3-common-mistakes-in-analog-digital-conversion.md","3 Common Mistakes When Converting Analog Signals to Digital",{"type":7,"value":8,"toc":158},"minimark",[9,14,18,22,25,48,52,55,80,84,87,111,115,118,138,142,145],[10,11,13],"h2",{"id":12},"introduction","Introduction",[15,16,17],"p",{},"Converting an analog signal into digital data consists of more than just using a ready-made module. An incorrectly designed digitizing process will lead you to wrong results, no matter how high-quality your sensor is. We examine 3 common mistakes that we frequently encounter in the field and that \"poison\" the accuracy of data with technical reasons.",[10,19,21],{"id":20},"_1-grounding-and-isolation-errors-ground-loops","1. Grounding and Isolation Errors (Ground Loops)",[15,23,24],{},"The biggest enemy of the analog signal is the ground potential differences in the system.",[26,27,28,36,42],"ul",{},[29,30,31,35],"li",{},[32,33,34],"strong",{},"Mistake",": Grounding the transmitter and ADC module from different sources causes a \"noise\" overlap on the signal.",[29,37,38,41],{},[32,39,40],{},"Result",": Constantly oscillating, unstable values on the screen.",[29,43,44,47],{},[32,45,46],{},"Solution",": Using transmitters with isolated inputs or bringing the whole system together at a single star grounding point.",[10,49,51],{"id":50},"_2-wrong-sampling-rate-aliasing","2. Wrong Sampling Rate (Aliasing)",[15,53,54],{},"This is the mismatch between the change rate of the signal and the sampling rate of the ADC.",[26,56,57,62,67],{},[29,58,59,61],{},[32,60,34],{},": Trying to read a rapidly changing signal (e.g., vibration) only a few times per second.",[29,63,64,66],{},[32,65,40],{},": Due to the phenomenon called \"aliasing,\" low-frequency imaginary fluctuations that do not exist appear as data.",[29,68,69,71,72,79],{},[32,70,46],{},": Choosing devices such as the ",[32,73,74],{},[75,76,78],"a",{"href":77},"/en/products/zma-data-acquisition","ZMA Series"," that sample at least 2 times (preferably much more) the signal frequency in accordance with the Nyquist theorem.",[10,81,83],{"id":82},"_3-impedance-mismatch-and-signal-losses","3. Impedance Mismatch and Signal Losses",[15,85,86],{},"Mismatch between sensor output resistance and transmitter input resistance.",[26,88,89,94,99],{},[29,90,91,93],{},[32,92,34],{},": Connecting a loadcell with mV/V output to an ordinary analog card with low input impedance.",[29,95,96,98],{},[32,97,40],{},": Signal attenuation and low-resolution data.",[29,100,101,103,104,110],{},[32,102,46],{},": Using special ",[32,105,106],{},[75,107,109],{"href":108},"/en/products/gdt-digital-transmitter","GDT Digital Transmitters"," with high input impedance and capable of ratiometric measurement.",[10,112,114],{"id":113},"no-room-for-mistakes-with-amazeng","No Room for Mistakes with Amazeng",[15,116,117],{},"Amazeng engineering prevents these mistakes while still in the hardware design phase:",[26,119,120,126,132],{},[29,121,122,125],{},[32,123,124],{},"Full Isolation",": Our devices have galvanic isolation at industrial standards.",[29,127,128,131],{},[32,129,130],{},"Filter Technology",": Hardware and software \"anti-aliasing\" filters are available to prevent fake signals (aliasing).",[29,133,134,137],{},[32,135,136],{},"24-bit Stability",": Offers high resolution enough to absorb even small signal fluctuations caused by impedance.",[10,139,141],{"id":140},"conclusion","Conclusion",[15,143,144],{},"Correct data is the result of correct design. Erroneous measurements not only provide wrong information, but also jeopardize the safety of your system.",[15,146,147,148,152,153,157],{},"To overcome the challenges in the digitization process and to detect errors in your system, ",[75,149,151],{"href":150},"/en/products","take a look at our technical documents"," or ",[75,154,156],{"href":155},"/en/contact","contact us to benefit from our consultancy service",".",{"title":159,"searchDepth":160,"depth":160,"links":161},"",2,[162,163,164,165,166,167],{"id":12,"depth":160,"text":13},{"id":20,"depth":160,"text":21},{"id":50,"depth":160,"text":51},{"id":82,"depth":160,"text":83},{"id":113,"depth":160,"text":114},{"id":140,"depth":160,"text":141},"Basic mistakes made in the process of converting analog signals to digital (digitizing) in industrial automation projects that compromise data accuracy.","md",{"date":171,"author":172,"readTime":173,"tags":174},"2025-12-07","Amazeng Technical Team",5,[175,176,177,178,179],"ADC","Digitizing","Erroneous Measurement","Signal Noise","Engineering Mistakes",true,"/en/blog/3-common-mistakes-in-analog-digital-conversion",{"title":5,"description":168},"en/blog/3-common-mistakes-in-analog-digital-conversion","ArQU823okmuvzknncuKG7kwKR2OTaYYS08EPDwLW8yY",1778229658936]