34461A Datasheet, PDF (5/23 Pages) Keysight Technologies – Digital Multimeters

05 | Keysight | Digital Multimeters: 34460/61/65/70A - Data Sheet
Measure with Unquestioned Truevolt Confidence
What Truevolt technology means to you:
You can measure your real-world signals,
not instrument error
Noise and injected current: Keysight Truevolt DMMs contribute
less than 30% of the injected current than alternatives. Compared
to some lower cost alternatives, Truevolt DMMs offer almost
100% less noise.
800
700
600
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100
0
Truevolt
Brand A
Brand B
Brand C
Input bias current: Ideally, no current flows into the measurement
terminals of your DMM. In real measurement situations, there are
always input currents creating additional measurement errors.
Truevolt DMMs take care of input bias current. Some alternative
DMMs offer 20% to infinitely poorer performance (some are too
noisy to measure).
You can measure your real-world signals with
confidence
All Truevolt DMM specifications are tested
and guaranteed for compliance with ISO/
IEC 17025 standards so you can prove the
effectiveness of your lab or production
line’s quality management system. Many
lower-cost DMMs in this class do not
carry a guarantee of their measurement
specifications.
You can take advantage of expanded
measurement functionality
Compared to the 34401A DMM, Truevolt DMMs offer expanded
current ranges from 100 µA to 10 A. We have also added
a temperature measurement function (RTD/PT100, 5 kΩ
thermistor). Additionally, diode measurement capability has been
expanded to allow a larger full-scale voltage to be measured (5 V)
to enable the measurement of more diode types such as LEDs.
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10
0
Truevolt
Brand A
Brand B
Input
bias
current
too
noisy
to
measure
Brand C
Digital AC rms measurements: For meters in this class, only
Keysight uses digital direct sampling techniques to make AC rms
measurements. This results in a true rms calculation technique
that avoids the slower response of analog RMS converters used
in all other vendor’s 6½ digit DMMs. This allows for crest factors
up to 10 without additional error terms. This is a unique, patented
technique – only used by Keysight.
Crest factor: the ratio of the
peak value to the RMS value
of a waveform
Peak value
RMS value
AC measurement
accuracy is degraded
when signals have
energy contained in
higher frequencies
than a typical sine
wave.