Datasheet

Page 10
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A powerful, flexible data acquisition system for
automated test
The 34970A/34972A gives you the resolution, accuracy, repeat-
ability, and speed you’ve come to expect from a Keysight data
acquisition system. It provides the measurement muscle you need,
along with signal routing and control capability, in a flexible,
modular format that can grow and change to match your varied
applications.
Powerful measurements
The internal 6½ digit DMM brings the power and performance
of a world-class stand-alone DMM to the 34970A/34972A, but
at a fraction of the cost and in a fraction of the space. It’s as
accurate as the best bench DMM available: 0.004% basic 1-year
dcV accuracy, 0.06% basic 1-year acV accuracy, and 0.01% basic
1-year resistance accuracy. Our patented Multi-slope III A-D
technology offers incredible linearity (2 ppm of reading +1 ppm
of range) along with 22 bits of real resolution. And since it is an
integrating A/D, it provides excellent noise rejection as well—a
nice change from noisy PC plug-ins and sampling A/Ds. No
more averaging lots of samples just to see the real data you
wanted. And if you need high scan rates, the 34970A/34972A is
capable of delivering fully converted measurements at speeds up
to 250 ch/s.
The input section of the DMM is optically isolated and shielded
from the 34970A/34972A’s earth-referenced circuitry and
computer interface, offering up to 300 V of input isolation. This is
important for reducing ground loop and common mode voltage
errors associated with long wiring runs and floating measurement
sources.
Flexible functionality
The DMM is installed inside the chassis rather than in one of the
slots, leaving all three mainframe slots free for switch and control
modules. You can choose from eight different modules (see page
13) to get the precise functionality you need now—while giving
you flexibility for future expansion.
The internal DMM gives you the flexibility to measure 11 types of
inputs easily and inexpensively. The built-in signal conditioning
and conversion routines turn raw inputs directly into real informa-
tion. Each measurement channel is independently configurable,
so you can set different measurement functions, scale factors and
alarm limits, even on adjacent channels. Advanced measurement
features such as offset compensation, variable integration time,
and delay are also selectable on a per-channel basis.
Get better measurements with built-in
signal conditioning
The Keysight 34970A/34972A architecture offers
advantages over other data acquisition solutions which
rely on external or plug-in signal conditioning modules for
handling functions other than dcV:
– Minimizes external wiring and the resultant potential
for noise and errors to enter your system
– Reduces hidden costs and overall system cost by
avoiding unnecessary cables, breakout boxes and
signal conditioning elements
– Simplifies your configuration—for faster, easier setup—
with fewer connections and components
– Takes the guesswork out of error analysis.
– Measurement accuracies are specified to include all
system-related errors
– Improves reliability, with fewer interconnects and
fewer parts that can fail