Thass my point! And the modern DMMs have even higher input impedance than the VTMs that I love so much.What I was taught in electronics courses was the higher input impedance is needed more so in certain RF circuits to avoid loading down the circuit, which prevents you from getting an accurate reading.
Waiting for the flames.....
Thanks for all the answers, lots of good ones too. I'm only buying this because one of my vintage TT's has a bad hum and I was told I need to check my ground wire, not just visually but with a meter. So that's what I want to do, don't know how to do it but if I can fix the TT it will be worth a few bucks to buy a meter. Maybe down the road I can use it for something else but I'm no electronics repairman ,
Or look for a used Simpson 260.
BANG!!!Hey man, you should start a Go Fund me page, then all these people wanting you to buy more meter than you need can donate to your meter fund.
I don't even know what feature I need to use to check my ground wire LOL . M ohms? I have noticed the cheap ones usually say auto testing on the package. One said for hobbies on it, I thought that might be me!For the OP I suggest to go ahead and buy a cheap DMM. No sense investing a lot of money up front, and once you use it a while you'll know what features you really want/need. Manual range setting is OK. Just make sure you get one which measures high values of resistance, up to the M ohms, some of the ones intended for electricians or automotive techs don't, and aren't useful for electronics.
I used to use a DMM, but these days I use my Simpson 260 95% of the time. Not just for tube stuff, but for pretty much everything. The only time the DMM comes out is if I need to measure frequency, or a capacitor. For high impedance I use a VTVM or just the oscilloscope.
For the OP I suggest to go ahead and buy a cheap DMM. No sense investing a lot of money up front, and once you use it a while you'll know what features you really want/need. Manual range setting is OK. Just make sure you get one which measures high values of resistance, up to the M ohms, some of the ones intended for electricians or automotive techs don't, and aren't useful for electronics. Once you get a better one, you'll find that there's plenty of situations where you may want to use two meters, and having the cheap one around is still useful. It's easy to spend someone else's money for them, but I think unless there's long term plans for a tool, it's best to get just the cheapest thing which will do the job.
I don't even know what feature I need to use to check my ground wire LOL . M ohms? I have noticed the cheap ones usually say auto testing on the package. One said for hobbies on it, I thought that might be me!
There are lots of videos and “How To” posts on the web. Go forth and study!I don't even know what feature I need to use to check my ground wire LOL . M ohms? I have noticed the cheap ones usually say auto testing on the package. One said for hobbies on it, I thought that might be me!