Products > Test Equipment
Keysight DMM - Yay or nay?
blackdog:
Hi Frank,
Autocal 34465a
My expectations of the 34465A was that the Autocal worked well at the 10V DC range and that is what you also point out, was not executed properly bij Keysight and I do blame Keysight for that, do it right or don't do it.
The autocal is usable, do an autocal read within 15 seconds(and with my 34465a it is within 1PPM on 10V DC range)
As I mentioned, I am certainly happy with the filter operation that is available as an extra in the 34465a, also the extra possibilities for temperature measurements are appreciated, and the 34465a is used here almost daily.
This is because in temperature measurements with the TEK DMM4050 with a resolution of 0.001C there is a lot of noise present and the 34465a has the extra filter and less noise.
34465a VS 3458a
As you yourself pointed out I am aware that it is not a 3458a. ;)
My two Keysigt 34461a are still within specs as far as DC is concerned and my two 34461a meters drift on the DC 10V range no more than 3 to 5PPM / year, and that is very good.
34401a
Even my 34401a after 8 years is still within 6PPM the specified value of course around the calibration temperature.
The 34401a is a bit more sensitive to ambient temperature variation, this for the meter I have here, I have no knowledge of other meters of this model.
Considerations
If you don't think the interface is very important, then I would choose the Keithley 6500 over the 34461a.
But this is based on 1x Keithley 6500 and I have had 5 pieces of 3446x in here.
But 6500 VS 34465a everyone has to decide for themselves, my measuring sessions are certainly different from yours. :P
Service
The Service I have had from Keysight has been excellent, Service from Keithley I have fortunately not needed yet.
The 6500 is now almost three months old and as far as I have figured out, very stable.
Kind regards,
Bram
Henry Finley:
Frakly I think we've past the point of diminishing returns on much gear. And one thing I can be sure of is that China is not contributory to advancement aside of what they can appropriate the proceeds of, for their own purposes. And since most factory labor in the US is by refugees, expensive, and not even as wll made anyway then what's the point in frittering good money after bad? In concludion, if an old HP US-made machine still works quite well, why do I need all that crap foreign made (and often counterfeit). junk. As in JUNQUE, junk. From what I've seen, Mr Carlson seems to come up with some fine pieces of gear, available for us to fabricate for ourselves. There are 40 ways to test a cap. but if you are testing the cap because you suspect it, then wouln't just replacing it and seeing, be a better use of time?
tautech:
--- Quote from: Henry Finley on March 05, 2022, 05:34:12 am ---Frakly I think we've past the point of diminishing returns on much gear. And one thing I can be sure of is that China is not contributory to advancement aside of what they can appropriate the proceeds of, for their own purposes. And since most factory labor in the US is by refugees, expensive, and not even as wll made anyway then what's the point in frittering good money after bad? In concludion, if an old HP US-made machine still works quite well, why do I need all that crap foreign made (and often counterfeit). junk. As in JUNQUE, junk. From what I've seen, Mr Carlson seems to come up with some fine pieces of gear, available for us to fabricate for ourselves. There are 40 ways to test a cap. but if you are testing the cap because you suspect it, then wouln't just replacing it and seeing, be a better use of time?
--- End quote ---
Take that anti China crap elsewhere please.
Traceless:
--- Quote from: Electro Fan on March 04, 2022, 09:13:42 pm ---... if you don't already have a LCR meter, the DER DE-5000 is an excellent meter ...
--- End quote ---
I've seen and read quite a lot of good things about the DER DE-5000. I already own an LCR Meter, the DER DE-5000 was one of the candidates I considered but ultimately went with the 5200 model from Matrix.
--- Quote from: Electro Fan on March 04, 2022, 09:13:42 pm ---If you can get the extra memory for the 34465A at no extra charge (if KS happens to be running the special or if you can persuade them or a distributor to throw it in) that would of course be good.
--- End quote ---
--- Quote from: Dr. Frank on March 04, 2022, 12:16:11 pm ---KS offered the MEM option for free several times over the last years as a sales deal, so you have to look out, also on the American site, or ask your German distributor, if they can offer that for free, if you buy the instrument.
--- End quote ---
Thank you Dr. Frank and Electro Fan, I actually found out that the Keysight Memory Promotion is currently available. What is not clear (yet) is if I had to purchase through KS directly to qualify.
--- Quote from: tautech on March 03, 2022, 10:04:49 pm ---Still for basic use the purchase of say of a DMMCheck provides a sanity check that accuracy is appropriate for your needs...
--- End quote ---
It took me a bit of time to find out if/how to get a DMM Check here. Ordering directly from abroad involves considerable import fees, but it seems there is a german distributor assuming this is the DMM check you are talking about. Unfortunately the model with LC option is marked "out of supply".
Also thank you @tautech for pointing out the resource on Defpom's site.
--- Quote from: tautech on March 03, 2022, 10:04:49 pm ---otherwise the Voltnut rabbit hole awaits.
--- End quote ---
I'm trying to stay away from it, it is tempting though ;D
tautech:
--- Quote from: Traceless on March 05, 2022, 08:29:27 am ---
--- Quote from: tautech on March 03, 2022, 10:04:49 pm ---Still for basic use the purchase of say of a DMMCheck provides a sanity check that accuracy is appropriate for your needs...
--- End quote ---
It took me a bit of time to find out if/how to get a DMM Check here. Ordering directly from abroad involves considerable import fees, but it seems there is a german distributor assuming this is the DMM check you are talking about. Unfortunately the model with LC option is marked "out of supply".
--- End quote ---
Yep, there's also thread about them here IIRC and I think it is Doug that makes them:
https://dmmcheckplus.com/
--- Quote from: Traceless on March 05, 2022, 08:29:27 am ---Also thank you @tautech for pointing out the resource on Defpom's site.
--- Quote from: tautech on March 03, 2022, 10:04:49 pm ---otherwise the Voltnut rabbit hole awaits.
--- End quote ---
I'm trying to stay away from it, it is tempting though ;D
--- End quote ---
No worries, enjoy the voyage. :)
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