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| What are - for you - the 3 biggest disadvantages of your benchtop DMM(s)? |
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| joeqsmith:
I bought the HP34401A because I had no way to control the HP3468A (HPIL) with a standard PC. For my hobby, both have served me very well. The HP34401A's fuse is located in the rear. Other equipment is stacked on it, it has a thick HPIB cable going to it. Not too long ago, we had a tree in the front yard that was struck by lightning which then coupled into the home through the coax, the phone lines, the sprinkler system and the mains. It caused enough common mode voltage in the lab that it damaged some of my equipment that uses GPIB. I recently went full in porting my old XP code to Windows 10 and when working with the VNA, was reminded just how slow that bus is. I would like to have Ethernet integrated on all my test equipment. Smaller cables, unlimited devices, faster, much high common mode immunity.... |
| Wytnucls:
Keithley 2000 and Rigol DM3058E. Very happy with both meters. Minor gripes: Keithley: DC nA accuracy should have been better for a 6 1/2 digit meter. (10mA range) No capacitance measurement No USB Rigol: No uOhm resolution for 4 wire measurement Continuity beeper faint No auto hold |
| bd139:
3478A: 1. Horridly bad LCD display 2. No continuity / feeper 3. Terrible front panel legend meaning I always stick my probes in the wrong holes. That’s about it. |
| maginnovision:
Prema 5017: 1. Somewhat slow for highest accuracy (min 2s for 7.5 digit) 2. Despite not having a fan/internal airflow it's fairly sensitive to temperature changes. 3. Parts can be tough to get. For the most part though it's been working really well for me and it uses rs232 which I prefer over most alternatives. |
| bdunham7:
Fluke Bench DMMs from 8840A to 8846A (which are otherwise outstanding meters) have terrible current measurement implementations. Just give up and get external shunts. If I had to measure current very accurately on a frequent basis and didn't want to use shunts, my 8846A would be gone in a flash. And, of course, the later "6.5 digit" meters are 1.2M count instead of 2.0xM counts, which is very common but still something to grumble about. I really would like my 10V high-impedance range to go to 20V instead of just 12. |
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