On Sat, 23 Jun 2018 11:22:06 -0600, Randy Day
wrote:


I'm looking for recommendations on a computer-controlled
multimeter to automate a test procedure. I'd like to be
able to have the computer select voltage, resistance, etc.,
choose various ranges in each, and transmit readings to a
PC.

I see a lot of units that communicate, but I'm unclear
whether they allow functions and ranges to be set, or
whether they just transmit results from the range selected
on the front dial.

The one unusual requirement is a high resistance range (e.g.
2000Mohm). ACV/DCV/ohms ranges can otherwise be similar to
regular handheld units.

Any suggestions?

We use a lot of Keithley and Fluke benchtop DVMs in test sets, with
ethernet or USB interface. They can set anything under remote control
except for switching between the front and rear-panel inputs.

I prefer the Fluke 8845A. It's more stable at microvolt levels, does
good AC measurements, and is EMI harder than the Keithleys.

It only measures 100M ohms max, but you could do some simple hack to
measure gigohms.

There are cheap handhelds with interfaces, but the interface won't
turn the big range knob.

There are also cheap benchtop DVMs, typically Chinese. Might be good
enough.




--

John Larkin Highland Technology, Inc

lunatic fringe electronics