Touch screen display and higher processing power created the need for improved cooling over the other instruments you mentioned. The fan type, location and speed was carefully chosen to be considered quiet enough in an office environment for *most* people. Of course there are those who can still hear it and be bothered by it. To that end, individual opinions about it generally won't be helpful to another individual. YMMV. Hope this is helpful.
The transformer hum was an issue on early units.. when did you purchase yours? Did you contact anybody about a replacement at that time? Transformer hum has been resolved for some time now.
Since you asked, there might be a command to get an internal temperature (not sure a user accessible one, I could check) but you asked about temperature of hot parts? - no there isn't one that can tell you about what parts are hot. Most of the measurement circuits are actually not hot, but rather want a temperature stability in their area.
Also, transformer hum and fan noise are two different sources of audible noise and not related.
Has anyone had their DMM6500 or DAQ6510 calibrated yet and what did it cost you? I don't have much experience with Keithley calibrations but I hear they can be comparatively expensive.
Has anyone had their DMM6500 or DAQ6510 calibrated yet and what did it cost you? I don't have much experience with Keithley calibrations but I hear they can be comparatively expensive.
This was pulled from the Tek.com website
(Attachment Link)
I thought I remember reading in the manual/data-sheet that the calibration period for the DMM6500 was 2-years. I know mine was factory cal'd in 10/2008, so it isn't technically due yet. Tek's website is now saying recommended cal period is 1-year. Maybe they changed their mind
I'm considering putting mine up for sale...
Just got one for my birthday from the Swiss official distributor. I visited them, we had a chat and although they weren't aware of the battery drain issue, they checked their stock and gave me a very recently produced unit (12.04.2020). Really nice guys.
Just got one for my birthday from the Swiss official distributor. I visited them, we had a chat and although they weren't aware of the battery drain issue, they checked their stock and gave me a very recently produced unit (12.04.2020). Really nice guys.
Did you get a detailed first calibration report?
Just got one for my birthday from the Swiss official distributor. I visited them, we had a chat and although they weren't aware of the battery drain issue, they checked their stock and gave me a very recently produced unit (12.04.2020). Really nice guys.
Did you get a detailed first calibration report?
The certificate inside the box states only that the meter is in calibration. I haven't requested any calibration services.
With modern meters, that are adjusted in software the test / cal just after the adjustment of the ranges should be very close to nominal. So there would be limited values to most of the numbers. If at all the AC ranges may show a little more, as not every test point may have it's own corresponding CAL constant. It would be interesting only if they do the adjustment in the factory and do the calibration / check just before delivery, so with more time in between.
a non burned in LM399
PS crazy idea, is it possible to downclock the unit so the front panel creates less heating and doesn't need as much cooling?
It was found that most users / customers did not have any use for the full data report so that practice stopped in order to save processing time / cost. However, some people would still like the full report so it is available as a paid service and ordering option.
It was found that most users / customers did not have any use for the full data report so that practice stopped in order to save processing time / cost.
However, some people would still like the full report so it is available as a paid service and ordering option.
That being said, hwj-d PM me your unit serial, I can probably get the 10V range adjust data you are using for your instrument since you seem to want it. Also, FYI you are measuring an LTZ1000 with a 6500 which has a non burned in LM399. Are you doing a time study or a temperature study?
It was found that most users / customers did not have any use for the full data report so that practice stopped in order to save processing time / cost. However, some people would still like the full report so it is available as a paid service and ordering option.