Atec Agilent-34972A - Manual (Page 10)

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A powerful, fl exible data acquisition system
for automated test
The 34970A/34972A gives you the resolution, accuracy,
repeatability, and speed you’ve come to expect from an
Agilent data acquisition system. It provides the measure-
ment 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 cir-
cuitry 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 function-
ality 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 information. Each measurement channel is
independently configurable, so you can set different mea-
surement 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 Agilent 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 poten-
tial 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