DI-720-USB Dataq Data Acquisition Instrument

The Dataq DI-720/730 Series Data Acquisition Instruments offer 14-bit resolution and 150-200kHz waveform recording capability. They communicate through your PC's parallel port or an optional Ethernet or USB interface.

Use the DI-720 for general purpose applications where pre amplified signals are acquired. Examples are process monitoring, and many medical research applications.

Use the DI-730 for wide dynamic range measurements, especially those involving AC or DC electric motors. Examples include paper, aluminum, and steel mills; high speed trains; and rail and seagoing locomotion. The high sample rate, exceptional isolation, and CMR characteristics of the DI-730 make it very well suited for maintenance and troubleshooting of DC drive systems. Other applications include RPM measurements from motor/generators, supply voltage and current measurements, and field current measurements from drive-roll, braking, and take-up motors.

The Ethernet communication option connects DI-720 and DI-730 Series products to any local area network (LAN). Direct Internet access is also possible. This patented (US 7,792,139 B2) communication option uses standard CAT5 cable to yield continuous data acquisition throughput rates up to 180kHz. Multiple DI-720/730 products (each equipped with an Ethernet interface) may be daisy-chained together to form an ad-hoc extended network of autonomous, yet fully synchronous data acquisition stations. Each station can sample at a different rate (up to 180kHz throughput) and still maintain full synchronization. Station separation can be as far as 100 meters.

The 8-channel DI-730 Series features a measurement range of ±10mV to ±1000VDC (or peak AC) over six gain ranges with ±1000V channel-to-channel and input-to-output isolation. Replace entire racks of isolation amps, high and low voltage amps, and data acquisition subsystems with one, portable, lightweight instrument. Channel-to-channel isolation protects delicate control circuits, computer equipment, and personnel from high common mode voltages.

The DI-720 Series accepts (32) high-level or signal conditioned analog inputs in a single ended mode or (16) inputs in a differential input mode. The high-level inputs are typically low impedance, preconditioned signals in the range of 1.25 to 10VFS. Channel expansion up to (240) channels is possible with expanders.

The DI-720 and -730 Series instruments are manufactured with printer port, Ethernet, and universal serial bus (USB) communication interfaces. All instruments have a 25-pin male printer port connector for EPP, bidirectional, or standard mode parallel port communication with your PC. Options add Ethernet communication capability with a RJ45 connector, or a USB port for universal serial bus communication. The optional communication interfaces sacrifice the standard PP mode and cannot be used concurrently with the printer port.