OPTION DKD: (ISO17025) calibration incl. ISO 9000
calibration (order only with device)
Characteristics
URE2 is a broadband RMS voltmeter featuring extremely high accuracy and
speed. A patented rectifier circuit allows measurement of signals with a crest
factor of up to 7 and frequencies of up to 25 MHz.
Fields of application
Level measurements in audio
range
Interference measurements on
switch-mode power supplies
Measurement of extremely fast
dialling signals and detection of simultaneously transmitted supply
voltages in radiotelephony
Automatic quality control of
audio and video tapes
High-frequency measurements
in digital magnetic storage and optical data storage
Peak weighting in video
measurements (sync signals)
Secondary calibration
standard
Measurement accuracy
A patented rectifier circuit with microprocessor-controlled autocalibration
makes for the outstanding measurement characteristics of URE2 and URE3. In
order to further enhance the accuracy, correction factors are determined for
each instrument and measurement range and stored in a nonvolatile memory.
A zero function allows noise voltages and the inherent noise to be
compensated for, the measurement accuracy being thus increased in particular at
low levels.
The measured frequency value is used by URE3 for an internal frequency
response correction. This method increases the accuracy mainly at the higher
frequencies. Distortion-free measurement of signals is ensured by:
high input impedance
low input capacitance
highpass and lowpass filters
that can be switched in to suppress hum or high-frequency
