USB-AI12-16A - 12-Bit, 16 Channel USB Analog Input Module, Advanced version, 12-Bit, 500kHz, with autocalibration

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The USB-AI12-16A Series offer an ideal solution for adding portable, easy-to-install high-speed analog and digital I/O capabilities to any computer with a USB port. These units are USB 2.0 high-speed devices, offering the highest speed available with the USB bus. The USB-AI12-16A is a 12-bit resolution A/D board capable of speeds up to 500kHz for its 16 single-ended or 8 differential analog input channels. Model USB-AI12-16 reaches speeds of 250kHz, and the USB-AI12-16E is our economy version at 100kHz. Standard features also include 16 digital I/O lines and a 16-bit counter/timer inchall packaged in a small, rugged, industrial enclosure.

These small, compact, multifunction I/O boards provide the user with everything needed to start acquiring, measuring, analyzing, and monitoring a variety of applications. These data acquisition boards can be used in many current real-world applications such as precision measurement, analysis, monitoring, and control in countless embedded applications.

These units are designed to be used in rugged industrial environments but are small enough to fit nicely onto any desk or testing station. The board itself is PC/104 sized (3.550 by 3.775 inches) and ships inside a steel powder-coated enclosure with an anti-skid bottom and a DIN-rail mounting capability.

The units feature eight standard analog voltage input ranges (independently configured), two factory current input ranges (4-20mA or 10-50mA) and include a data sample buffer. Model USB-AI12-16A features hardware real-time calibration capability which allows the card to continually compensate for offset/gain errors, giving a more accurate reading. To minimize noise, the board implements a technique called oversampling. Additionally, each channel contains its own analog ground pin which is helpful in reducing noise from external signal sources. A unique channel-by-channel programmable gain feature enables measurement of an assortment of large and small signals in one scan inchall under software control at up to 500kHz. The boards data buffer and ability to trigger the A/D in real time assures synchronized sampling that is unaffected by other computer operations inchan essential requirement for signal, vibration and transient analysis where high data rates must be sustained for short periods of time.

Analog to digital conversion starts or inchƒ¦“A/D starts inch are issued one of three ways: Software Start, Timer Start, or External Trigger Start. A/D starts are software configured to be either rising or falling edge. Additionally, A/D starts are software configured to be Single Channel or Scan. Single Channel samples data once from the next consecutive channel within the enabled set. A Scan samples data from all channels within the set at the fastest possible rate.

A fully programmable 8254 16-bit counter is provided with a maximum input frequency of 10MHz. The clock, gate (inputs) and output can be accessed externally for extended functionality. The counter can be configured in a variety of modes and has the ability to use external signals for its inputs.