San Diego, Calif.Are you looking for a reasonably priced PCI bus plug-in for precision analog I/O applications? Board maker ACCES I/O Products has one. Its new high-resolution Model LPCI-A16-16A, selling for less than $700 a pop, is a PCI bus-compatible multi-function analog I/O board that imparts 16-bit precision to PC-based measurement, analysis, monitoring and control applications. Either commercial temperature range or industrial temp range versions can be ordered.
The LPCI-A16-16A features eleven analog-input ranges and a quiet front-end. A unique channel-by-channel programmable gain feature enables measurement of large and small signals in one scanunder hardware control.
The LPCI-A16-16A provides 500-ksamples/s sampling on 16 single-ended analog-input channels, or eight differential analog input channels. It uses successive approximation A/D (analog-to-digital converter) conversion that's within ±1-LSB (max) non-linearity. Inputs are over-voltage protected (to 33-V).
On the output side, the board packs dual 12-bit analog DAC (digital-to-analog converter) channels, as well as 16 digital I/O lines. The DAC output provides 0-5-V and 0-10-V ranges, with ±2-LSB relative accuracy. Non-linearity is within a tight ±0.2-LSBs. The DAC outputs settle rapidly in 8-µs, and can deliver as much as 5-mA.
The board's data FIFO, and ability to trigger its A/D in realtime, assures synchronized sampling that's essentially unaffected by other computer operations; that's a good attribute for signal, vibration, and transient analysis applications where high data rates must be sustained for short periods of time. The FIFO can store 1024 samples (optionally, the plug-in can be equipped with a 64-ksample FIFO).
The board also includes an EEPROM-based auto-calibration circuit, and packs software-selectable synchronous, asynchronous, and timed trigger modes. Finally, the LPCI-A16-16A board also uses an industry-standard 8254 interval timer chip to implement three 16-bit counter/timers.
Connections Use SCSI
Connections are made to the board via a 50-pin SCSI connector. A shielded round-wire cable model and a screw-terminal board are optionally available. These accessories can facilitate bench testing or can aide embedding into OEM applications.
The LPCI-A16-16A also meets the MD2 Low Profile PCI Bus Specification, and can be installed in any 3.3-V or 5-V PCI or PCI-X slot (a stackable PC/104 version also available). As a low-profile plug-in, it can also serve well in space-limited embedded applications, such as thin-client and high-density rack-mount servers.
Operating System Versatility
The LPCI-A16-16A can be used under most operating systems; as shipped it includes support for DOS, Linux, and Windows 95, Windows 98, Windows Me, Windows NT, Windows 2000, Windows XP, and Windows 2003-compatible software.
The supplied software package also includes sample programs and source code in C and Pascal for DOS, and VisualBASIC, Delphi, C++ Builder, and Visual C++ for Windows.
Also included is a graphical set-up program in Windows. Linux support includes installation files and basic samples for programming from the user level via an open-source kernel driver.
For more info, contact Regional Sales Managers Marty Wingett or Marc Kryjewski at ACCES I/O Products, Inc., 10623 Roselle Street, San Diego, Calif. 92121. Phone: 858-550-9559. Fax: 858-550-7322. E-mail: email@example.com, or firstname.lastname@example.org.
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ACCES I/O Products, 858-550-9559, www.accesio.com