Thanks. Yes, whenever I receive a new instrument, its best to do a performance test to check it meets the specs. Most folks simply assume its factory perfect and begin using it. Most of your video tests are akin to select samples of performance tests, but there are detailed sets somewhere in most service manuals. Some of the higher levels of the tests require more equipment, but just try to get as many done as possible. In the 1272a service manual, it begins at page 10. It opens:
"The performance verification tests are recommended as
acceptance tests when you first receive the instrument. The
acceptance test results should be compared against the one
year test limits. After acceptance, you should repeat the
performance verification tests at every calibration interval.
If the multimeter fails the performance verification tests,
adjustment or repair is required."
In the case of a new DMM, it just gets shipped back to the seller.
Most excellent. Thanks for doing it. Its been ?~ 1 year since I did mine, there were some significant v1.x bugs, what firmware version is shipped with the new 1272a?
Thanks for the feedback. Mine came with firmware version 2.00
Interesting info on the calibration service...looking at the print out I figured it must be automated but good to know the cost should be reasonable as well.
The cal certificate is great if you need such; its fully automated so the cost to do it is fairly small done the Agilent way. However, one 1272a I received with a certificate was out of cal, and the values the meter provided on some ranges and the certificate did not match. Agilent sent me another test meter thereafter.
On an 1252a DMM, same thing on the 5V range, and both meters still had valid cal certificates.
So always good to performance test your new DMMs to insure it meets specs.
It's a little concerning that a valid cert is not reflecting what the meter should be....and I guess most folks are never going to realise that...