Help with DMM!

[Don]

@how2

@Don

If they have any N56FU (Maplin stock number) left you may be able to get a bargain - I got one for £15 - it is the cheapest datalogger available. But it is discontinued so may not be available.

http://www.maplin.co.uk/Module.aspx?ModuleNo=222041

Try clicking on the Check Stores Stock button. There aren't any left in Scotland but it is worth checking around your area, there might be some left.

They had some but they wanted £24.99

The one I got for 15 had no software or leads. I wasn't bothered as I had both already.

I'd actually say it is worth £25 - it once sold for around £60. On the other hand, whether it is worth it to you is another matter. Anything reasonably accurate will do fine.

[agenthex]

@FlashPilot

If you don't mind, could you please try adjusting one of your pots to see if you can dial in more accuracy? Id particularly be interested to see that if once calibrated for 4.20V, would it accurately report down to 1-0.9V? Possibly by narrowing the voltage test scale for our uses, more inherent accuracy might be realized. This would definitely be a win for everyone with access to a HF and an accurate DMM to calibrate the HF DMM.

The pot directly tunes the voltage measurement. It's fairly sensitive but I can adjust it within .01v pretty easily.

Mine are already accurate, so they've always matched up at 1.3v same as 4.1v.