Title :
Normal Mode Offsets in High Performance Digital Multimeters
Author :
Roberts, P.C.A. ; Early, M.D.
Author_Institution :
Fluke Precision Meas. Ltd., Norwich
Abstract :
The presence of a normal mode ac voltage can generate a significant dc offset in a digital multimeter (DMM). We have measured this offset for a range of instruments and find that it is more pronounced in high performance DMM´s. This effect is related to the use of more complex differential amplifiers in the preamplifier stage
Keywords :
differential amplifiers; digital multimeters; preamplifiers; voltage measurement; differential amplifiers; high performance DMM; high performance digital multimeters; normal mode ac voltage; normal mode offsets; preamplifier stage; AC generators; Circuits; DC generators; Filters; Frequency; Hurricanes; Instruments; Laboratories; Measurement standards; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2004 Conference on
Conference_Location :
London
Print_ISBN :
0-7803-8494-6
Electronic_ISBN :
0-7803-8494-6
DOI :
10.1109/CPEM.2004.305441
