6Sie haben Fragen oder wünschen eine Beratung? Angebotsanfrage unter 07121 / 51 50 50 oder über info@datatec.de
Page 6
Find us at www.keysight.com
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 multifunction 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
measurements 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.
