Thanks for the feedback Robski. I would like to simulate this test and post the results. I can see how we are trying to achieve the Min/Max voltage drop value of a 12 V square waveform (using 2 x channels and maths) The scope should produce these results without compromise. Can you tell me what comp...

Hello Mark, NICE WORK, and thank you very much for your post, sharing the information, and taking the time out to produce the attachment. (I know how time consuming this can be) Could you post a psdata file of your captures if possible? Did you find the squeak as a result of your application using t...

Hello and thank you for the posts. I think it would be helpful here to briefly explain 12 bit resolution as this will help all when looking at low voltage measurements. 12 bit resolution allows for 4096 measurement levels or steps across the full voltage range. For example. A voltage scale of +- 50 ...

Hello Robski and thank you for the post. Could you post your psdata file of the square waveform as we have a number of options at our disposal for voltage measurements sub 20 mV? Here I could place some annotations that will help with the various explanations. Could you confirm the scope model too a...

Hello Henri and thank you for your post and the time taken to compile the attachment which I have found of real value and an education. Thank you again What you have highlighted are the numerous variables that can affect the final captured data when measuring secondary ignition events. (With referen...

Hello Mark, great news this is working now. It kind of rings true throughout the building here that those who have tried the device find it clumsy to connect and temperamental at best It will be interesting to see how you proceed with the Bluetooth ELM device and whether or not the sporadic nature o...

Hello Mark thank you for the feedback and sorry, I should look more closely at “Attachments” before asking for files that are already included. I have downloaded the pddata file and listened very closely to the audio. I have noticed an intermittent squeak type noise similar to drive belt (as you hav...

Hello and thank you all for taking the time to read and digest this post. The 120 value refers to the windings of the three phases of the stator. The alternator stator has three internal windings wound 120 degrees between each phase. The alternator output frequency formula is based upon a single pha...

Hello Mark and thank you for the post. I have been experimenting today with the ELM 327 Bluetooth device and I have to say I have managed to connect to the vehicle and obtain engine and road speed data, but it was not as simple as it may sound. I do like the idea of a Bluetooth device for OBDII data...

Hello Mark and thank you for the enquiry It is interesting you have highlighted engine noise analysis using the NVH microphone as this can be challenging given the amount of background noise present in the engine bay. From my experience it helps to "home in" on the frequency of interest and once aga...