A powerful, flexible data acquisition system
for automated test
The 34970A gives you the resolution, accuracy,
repeatability, and speed you’ve come to expect
from an Agilent 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 6
1
/2 -digit DMM brings the power and
performance of a world-class stand-alone DMM to
the 34970A, 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 rejec-
tion as well—a nice change from noisy PC plug-ins
and sampling A/Ds. No more averaging lots of sam-
ples just to see the real data you wanted. And if
you need high scan rates, the 34970A 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’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 float-
ing measurement sources.
Flexible functionality
The DMM is installed inside the chassis rather
than in one of the slots, leaving all three main-
frame slots free for switch and control modules.
You can choose from eight different modules
(see page 11) to get the precise functionality you
need now—while giving you flexibility for future
expansion.
The internal DMM gives you the flexibility to meas-
ure 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 fea-
tures such as offset compensation, variable inte-
gration time, and delay are also selectable on a
per-channel basis.
8
Get better measurements with built-in
signal conditioning
The Agilent 34970A architecture offers
advantages over other data acquisition solu-
tions 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 intercon-
nects and fewer parts that can fail
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