> > What do you think it means ... 60A/600A ±(3% +6) ". What is the +6???
Standard rating type for digital systems. It's telling you that the accuracy is a percentage of the range the meter is set to, PLUS some fixed number of LSD counts it may be off by. +/- 3%, AND +/- 6 counts in the LSD regardless of whatever percentage that might represent. what does the "4000 count" refer to > Also classic. In the early years, NIX-II (nixie) tube days, the carry bit out of the last column of the logic was interpreted as a "1". (Special [cheaper] display element, separate lamp, etc.) This became the 1/2 digit in a precision spec., and was the norm for years. Later, Fluke (others?) widened the MSD's range from 0-1 to 0-3, resulting in a max count of 3999 (4000 discrete values from the counter chain). I think they call that a 3/4 digit or something like that. It's just another way to tell you the breadth of a range. I just tested out my Fluke 83, and its top count is not 3999, it's 4095. Not very much different, but telling. Clearly it's now binary inside and not BCD, unlike early digital meters. It's possible that the "4000 count" label has always meant this, I don't have any middle-aged digital meters. -- Jim _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
