0 Members and 1 Guest are viewing this topic.
I think most of the Fluke handhelds use a bandgap reference (not sure the specific one in the 87V).
Quote from: grenert on December 23, 2011, 12:30:13 amI think most of the Fluke handhelds use a bandgap reference (not sure the specific one in the 87V).According to the service manual it's a 1.23v 60ppm band gap LM285bxz-1.2d26Z
Cool, thank you. Is that Service Manual for the original 87, or the 87V?... Online I could only find the PDF for the service manual of the original 87, which seemed to be quite different in quite a few ways.
Quote from: samgab on December 23, 2011, 01:56:15 amCool, thank you. Is that Service Manual for the original 87, or the 87V?... Online I could only find the PDF for the service manual of the original 87, which seemed to be quite different in quite a few ways.Probably the original. Now that I look more closely (just got it an hour ago) the manual (PDF from the guy who sold me the 87-V on eBay) looks pretty old. It says rev 5 3/96
Hmm, yeah '96, that'll be the original. It'll have info in it about calibrating (adjusting) using trim pots, which the 87V doesn't have. Quite a few of the components looked quite different so I'm not sure if they are still using the same voltage ref.
Hi, I was wondering what is the voltage reference component in the Fluke 87 V?Which is the specific precision component that gives it it's 0.05% basic DC Voltage accuracy rating?