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And the DAQ970A measures and converts 12 different input
signals:
– Temperature with thermocouples, RTDs, and thermistors
– dc and ac volts
– 2- and 4-wire resistance
– Frequency and period
– Capacitance and diode
– Strain
What’s more, each channel is independently configurable. This
means you can configure channel 1—for dcV, channel 2 for a
K-type thermocouple, and channels 3 and 13 for a 4-wire RTD
measurement—all on the same module, all in a single scan. For
custom linear conversions, use the Mx+B scaling function on any
channel. You can even display a custom engineering label like
RPM or PSI to identify your measurement units.
Versatile alarms
Alarms are available on a per-channel basis as well. Enter a high
limit, a low limit, or both. The DAQ970A compares each reading
to its limits and flags any out-of-range measurements. You can
assign one of four TTL alarm outputs to any input channel to
trigger external alarm lights, sirens, or send a TTL pulse to your
control system, all without a PC connected.
Scanning made simple
The DAQ970A automatically builds a scan list that includes all
configured inputs (even digital inputs from the Keysight multi-
function module) in ascending order by channel number. You can
pace scans by setting the DAQ970A internal timer for automatic
scanning at a specific interval, by manually pressing a front-panel
button, or by sending a software command or external TTL
trigger pulse.
Monitor any input
A special display mode monitors a selected input channel,
continuously updating the display with new readings—even
during a scan. Or, when using the DAQ970A with built-in LAN, the
channels can be monitored over the network using the graphical
Web interface. It’s great for keeping an eye on a key input, or for
troubleshooting your system before a test.
Non-volatile memory and USB flash drive adds
convenience, portability
All readings are automatically time-stamped and stored in a
nonvolatile 100 k reading memory—enough memory to hold
more than a week’s worth of data (20 channels scanned every
five minutes). The nonvolatile memory holds your data even after
power is removed, so you can use the DAQ970A to collect data at
a remote location for later uploading to a PC. Or if you need even
more memory, the DAQ970A USB port can be used to log data
directly to a USB flash drive or to copy the data from the reading
memory without being connected to a computer.
Data logging feature checklist
– From 1 to 120 channels of analog input
– Measurements include dc volts, ac volts, thermo-
couple, thermistor and RTD temperature measure-
ments, 2- and 4-wire Ohms, dc current, ac current,
frequency, and period and capacitance
– 6½ digits (22 bits) of resolution
– 100 k reading nonvolatile memory including
time-stamp
– Scaling and alarms available on each channel
– Full-featured front panel for stand-alone configuration,
troubleshooting, and data viewing
– BenchVue DAQ software for configura-tion and data
analysis
– Nonvolatile storage for five complete instrument states
– Built-in LAN or USB interfaces to support remote data
logging applications
A powerful, flexible data acquisition system for
automated test
The DAQ970A gives you the resolution, accuracy, repeatability,
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 DAQ970A, 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 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 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 DAQ970A is capable of delivering fully converted measure-
ments at speeds up to 450 ch/s.
The input section of the DMM is optically isolated and shielded
from the DAQ970A 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.
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