RMS Voltmeter DC - 25MHz IEEE bus, digital readout,
scaleable analog readout 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.
RMS/Peak Voltmeter URE3 further enhances the range of applications due to its
greater frequency range and higher accuracy, built-in frequency counter and
additional peak-responding rectifier.
OPTION C3:Three years of
depot calibration coverage based on the R&S recommended calibration
interval - includes test data. The first calibration is included with product
delivery with 2 additional depot calibration(s).
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 noise
voltages
