WIXOM, MICH. The IP236 from Acromag Inc. packs up to eight high-resolution analog output channels onto a single IndustryPack mezzanine board. With a 16-bit digital-to-analog (D/A) converter on each output channel, the board can deliver throughput rates as high as 100 kHz. Each channel also has a 128-byte FIFO buffer with its own clock, said company spokesman Robert Greenfield, "to enhance control over the transfer of data to the D/A and improve efficiency."
"The IndustryPack concept is ideal for a wide variety of I/O applications," said Greenfield. "Combining multiple IP236 modules on VMEbus, PCI, CompactPCI and other IndustryPack carrier cards can provide very high channel density through a single card: up to 40 output channels using a five-module PCI carrier card or 32 ports on a four-module VMEbus carrier. Also, by installing different IndustryPack modules on a carrier card, engineers can easily build a custom I/O board," he said.
The IP236 provides three operating modes with several data -transfer options, allowing the transfer of digital values from the memory buffer to the D/A to begin through software control, an external trigger or internal timer trigger. A single mode is supported that moves one value from the buffer to the converter for each trigger. An external trigger mode synchronizes channel conversions to an event or other IP236 board. And a continuous-transfer mode cycles data through the buffer for a specified channel.
The board is supported by C libraries for VxWorks and other operating systems, providing generic routines in source code to handle reads, writes, interrupts and other functions. Demonstration programs are included for exercising the board before attaching the routines to the application program. An ActiveX (OLE) controls software package is also available for use with Windows 95, 98 and NT applications.
Pricing on the IP236 starts at $1,200.
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EETInfo No. 622