During the USB stick Fatal System Error @57:39, I notice the 7510 is running FWRev 1.06.70d. The latest FWRev is 1.7.10. Have any/all of the issues you bring up in this video been resolved by the many FW Revisions between 1.06.70d and 1.7.10? I’m considering purchasing a lightly used (by private party) unit for $1,300 and am wondering if overall that would be a good deal.
Your impressions have cured my upgrade need anxiety. Seriously, I've managed to get Keithley 610C and 2000 for little money and just got great deal on a 236. I'll watch your videos, build a fixture, and learn how to use this great old machine.
So would you say that a Keithley 2001 would be a better purchase (used of course) then a 7510? If one is set on a Keithley that is or does it suffer from some of the same downfalls?
I had a 2001 and very much loved it. I'm pretty sure it's better where it counts for me. 2001 isn't a true 7.5 digit dmm either, but it's good enough! Only advantage of the 7510 over the 2001 is the better reference inside (for me at least)
@Gears and Gear Just since my curiosity is heightened, would you say that there isn't really an good 7.5 digit DMM’s on the market that aren’t prized in such a way that one should just save up for a second hand 3458A? (Talking personal use and not business of course)
Thanks for the video. Interesting to watch. Good not all reviews are just positive. But there are some quite important factual errors. The max PLC a 3458a typically is using for voltage measurement is 10. Anything higher is just average of more runs of 10 PLC measurements. I have couple 3458a and a 7510. I quite like the 7510. Different tool for different job though. I did not recognize the high amount of noise you were talking about. So I just compared the least noisy 3458a I have (out of 5) vs my 7510. The 3458a at 100 PLC, so 10 X 10 PLC measurement, and the 7510 at 20 X 5 PLC (i think around 5 is where it have least noise/time) on my fluke 732b's 10V output. The 3458a show around 200 nV standard deviation and the 7510 around 300nV for 100 measurements. I find that quite good and the 7510 much more of a 7.5 digit meter than the 3458a is an 8.5 digit meter (1.5 times more noise, but 1/10 of the value of least significant digit). This was not a very scientific test though, but an indication. I also find the 7510 better at low resistance measurement and low current. The 7510 also much less sensitive on ambient temperature and warm up quicker. Then there are the issues with A/D stability on 3458a and need to autocal once in a while if not being lucky to get a very good one. Even after weeks I rarely see the 7510 jump more than 0.2 ppm with an autocal. And the risk of a A/D breaking down on 3458a costing a new 7510 to repair. I completely agree with you on the wheel on the front panel thought ;) Rather seeing the 7510 as confusing, i see it as a meter that is very good at very many different things. Not a 3458a as a metrology tool, but surprisingly close (i dont like the non copper banana jacks of 7510 and the linearity and artefact calibration of 3458a is awesome... ). And way better in most other aspects.
Could the soft switch on the smu versus the dmm be for safety reasons? Tek's website says the 2400 series smu's can output up to 1100 volts. I really dislike the recessed banana plugs
After having calibrated my DMM7510 i found out that it actually do artefact calibration. 10V and 10K ohm to calibrate all DC voltage and resistance ranges. So one less advantage of 3458a.
so I guess it goes to show, fancy screen and UI is not always the mark of a good instrument thanks for patiently sitting with these things for an hour and talking about them
Check out Shariars review of the DMM7510 if you want to see another perspective. The UI is great for specific use cases, if you are just measuring a voltage and thats the end of it, no you don't need that complexity.
@@jaro6985 Well, for something that's marketed as a 7.5 digit meter, the specs don't seem to live up to that or the cost. With that being said, there's an ongoing debate about what specs constitute what digits, there's a chart in Linear app note AN82 that might be of some help but that talks only about resolution, there's no standards set for what noise and stability levels should be for corresponding digits 😅 Edit: I like opinionated reviews, whether I agree with them or not - they provide a different perspective (that we may have been blind to because of, say, bias). We can investigate the claims for ourselves and come to a reasonable conclusion based on that.
During the USB stick Fatal System Error @57:39, I notice the 7510 is running FWRev 1.06.70d. The latest FWRev is 1.7.10. Have any/all of the issues you bring up in this video been resolved by the many FW Revisions between 1.06.70d and 1.7.10? I’m considering purchasing a lightly used (by private party) unit for $1,300 and am wondering if overall that would be a good deal.
Your impressions have cured my upgrade need anxiety. Seriously, I've managed to get Keithley 610C and 2000 for little money and just got great deal on a 236. I'll watch your videos, build a fixture, and learn how to use this great old machine.
Thanks for the nice words! Good luck!
So would you say that a Keithley 2001 would be a better purchase (used of course) then a 7510? If one is set on a Keithley that is or does it suffer from some of the same downfalls?
I had a 2001 and very much loved it. I'm pretty sure it's better where it counts for me. 2001 isn't a true 7.5 digit dmm either, but it's good enough! Only advantage of the 7510 over the 2001 is the better reference inside (for me at least)
@Gears and Gear Just since my curiosity is heightened, would you say that there isn't really an good 7.5 digit DMM’s on the market that aren’t prized in such a way that one should just save up for a second hand 3458A? (Talking personal use and not business of course)
@@bikothewolf maybe the 34470? But I can't speak from experience. Maybe I'll get one for review! I don't know what it's performance is like
@@GearAcquisitionSyndrome Fingers crossed you will, would be interesting to see your take in it. Keep the great content coming!
assets.testequity.com/te1/Documents/pdf/keithley/HiPerfDMM_EGuide.pdf
This review is kind of a breath of fresh air, honestly. Thanks for taking the pain so we don't have to :D
Thanks for the video. Interesting to watch. Good not all reviews are just positive. But there are some quite important factual errors. The max PLC a 3458a typically is using for voltage measurement is 10. Anything higher is just average of more runs of 10 PLC measurements. I have couple 3458a and a 7510. I quite like the 7510. Different tool for different job though. I did not recognize the high amount of noise you were talking about. So I just compared the least noisy 3458a I have (out of 5) vs my 7510. The 3458a at 100 PLC, so 10 X 10 PLC measurement, and the 7510 at 20 X 5 PLC (i think around 5 is where it have least noise/time) on my fluke 732b's 10V output. The 3458a show around 200 nV standard deviation and the 7510 around 300nV for 100 measurements. I find that quite good and the 7510 much more of a 7.5 digit meter than the 3458a is an 8.5 digit meter (1.5 times more noise, but 1/10 of the value of least significant digit). This was not a very scientific test though, but an indication. I also find the 7510 better at low resistance measurement and low current. The 7510 also much less sensitive on ambient temperature and warm up quicker. Then there are the issues with A/D stability on 3458a and need to autocal once in a while if not being lucky to get a very good one. Even after weeks I rarely see the 7510 jump more than 0.2 ppm with an autocal. And the risk of a A/D breaking down on 3458a costing a new 7510 to repair. I completely agree with you on the wheel on the front panel thought ;) Rather seeing the 7510 as confusing, i see it as a meter that is very good at very many different things. Not a 3458a as a metrology tool, but surprisingly close (i dont like the non copper banana jacks of 7510 and the linearity and artefact calibration of 3458a is awesome... ). And way better in most other aspects.
Could the soft switch on the smu versus the dmm be for safety reasons? Tek's website says the 2400 series smu's can output up to 1100 volts.
I really dislike the recessed banana plugs
Not sure... It's even worse when you expect to turn off a thousand volts and the button doesn't work
Recessed is a safety requirement, you could make a PCB to convert to regular jacks if you really wanted to, but its not necessary..
@@jaro6985 3458A has binding posts and can measure up to 1kV too...
@@GearAcquisitionSyndrome oh good point
After having calibrated my DMM7510 i found out that it actually do artefact calibration. 10V and 10K ohm to calibrate all DC voltage and resistance ranges. So one less advantage of 3458a.
so I guess it goes to show, fancy screen and UI is not always the mark of a good instrument
thanks for patiently sitting with these things for an hour and talking about them
Check out Shariars review of the DMM7510 if you want to see another perspective. The UI is great for specific use cases, if you are just measuring a voltage and thats the end of it, no you don't need that complexity.
I don't agree with his review and I won't go any deeper than that!
@@jaro6985 Well, for something that's marketed as a 7.5 digit meter, the specs don't seem to live up to that or the cost. With that being said, there's an ongoing debate about what specs constitute what digits, there's a chart in Linear app note AN82 that might be of some help but that talks only about resolution, there's no standards set for what noise and stability levels should be for corresponding digits 😅
Edit: I like opinionated reviews, whether I agree with them or not - they provide a different perspective (that we may have been blind to because of, say, bias). We can investigate the claims for ourselves and come to a reasonable conclusion based on that.
@@NNNILabs Fair point. Some people do have use for resolution without accuracy, eg ratiometric measurements.
That's still not saying much. Resolution without any precision to back it up isn't useful
"Measurement data available soon" 😂