| Products > Test Equipment |
| Keysight's new 34465A (6.5 digit) and 34470A (7.5 digit) bench multimeters |
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| 6thimage:
One thing I've found a 6.5 digit multimeter really useful is measuring the current of a microcontroller. Not because it was drawing a tiny amount, but because the difference between the burden voltages of adjacent ranges was enough that it triggered the micro's brown out logic. With the 6.5 digits being enough to give a decent level of precision on the higher range. |
| Tom45:
Anyone know who has the 34465A in stock in the US? |
| georges80:
--- Quote from: EEVblog on March 03, 2015, 11:02:57 pm --- --- Quote from: georges80 on March 03, 2015, 10:34:50 pm ---I doubt more than a tiny fraction of folk have a need for 6 1/2 or 7 1/2 or ... accuracy and indeed many of the purchasing decision are based on wanting the perceived latest & greatest versus needing it --- End quote --- Trying watching something simple, like the slow discharge of a battery, using a 4.5 digit meter. Good luck. Having a 6.5 digit meter is like having a deep memory scope. You don't know how useful it can be until you get it. --- End quote --- Yep, I guess we'll all be doing slow discharge tests of batteries next to justify our 6 1/2 digit meters :) I work with battery powered designs all the time, haven't seen the need for measuring battery discharge with a 6 1/2 digit meter yet. An electronic load with logging to a laptop has been much more useful for my use when characterising a battery. I have a 6 1/2 digit bench meter (got it free), use it occasionally, but certainly wouldn't rush out to buy one and I am designing/working with electronics every day. I agree that there are 'some' applications where it is needed, but I'll stick to my original claim that only a small fraction of users actually NEED one. cheers, george. |
| mikeselectricstuff:
--- Quote from: EEVblog on March 03, 2015, 11:02:57 pm --- Trying watching something simple, like the slow discharge of a battery, using a 4.5 digit meter. Good luck. Having a 6.5 digit meter is like having a deep memory scope. You don't know how useful it can be until you get it. --- End quote --- Haven't tried it but I wonder if the effect of temperature variations is more than that of discharge by the time you get to the 6th digit... |
| DJ:
Low load battery drain measurements by voltage are very useful. Especially for things running months and years, vs hours or days. The 34465a looks like the one for me. Keysight's list of distributors and resellers could use some tweaking. |
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