General > General Technical Chat
How much accuracy do YOU really need?
madires:
--- Quote from: Siwastaja on February 11, 2023, 02:53:51 pm ---Incidentally, people who discuss and collect highly accurate test gear almost never build any actual projects that need this accuracy. At most, they build more test gear.
--- End quote ---
Just in case, there's a group therapy thread: https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/ ;D
MathWizard:
Using my Siglent SDM3065X, 6.5d meter, I was measuring VBE of some BJT's w/ 10G input Z mode, and 100PLC, I still found I could only get down to milli-volt levels. Because the temperature drift I guess, it just seemed to keep going. I need to check that more, see if the starting values are always around the same into the uV, and see where it goes if left a long time.
But yeah it worked good enough to match the diode equations. I have a few other meters, I should see how they do. I never really compared them much. Just lately, I was checking my Keithley 197 5.5d meter, and it sure settles on a value nicer than the Siglent, when its not on 10-100PLC. IDK what downside the K197 has that way, but it makes the faster, Silent way, seem pointless, in that it just spews numbers in the lower digits. Sometimes that can be useful, but it's hard to look at. Thats why unless I want the delay of 1-100PLC, I mainly use 0.6PLC.
bdunham7:
--- Quote from: Siwastaja on February 11, 2023, 02:53:51 pm ---Test gear is 99% masturbation.
--- End quote ---
Everyone needs a hobby.
Navigation
[0] Message Index
[*] Previous page
Go to full version