Product category:
Control systems, panels, HMIs, interfaces, screens
News Release from: Advantech (UK) | Subject: PCI-1721 advanced analogue output card
Edited by the Manufacturingtalk Editorial
Team on 22 March 2002
Card effects PCI Bus high speed analogue
output
For industrial PCI Bus applications where high-speed, continuous analogue output or real-time waveform functions are required, an advanced analogue output card is effective.
For industrial PCI Bus applications where high-speed, continuous analogue output or real-time waveform functions are required, the PCI-1721 advanced analogue output card from Advantech provides an effective solution The card features four output channels, each of which is equipped with a 12-bit double-buffered DAC
This article was originally published on Manufacturingtalk on 16 Sep 2005 at 8.00am (UK)
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A maximum digital update rate of 10MHz gives the PCI-1721 impressive high-speed performance.
The card features a number of unique features that include an auto-calibration function that eliminates the need for external equipment and user adjustments, and a facility that enables output settings and values to be retained after system reset.
PCI-bus mastering for data transfer allows users to run all I/O functions simultaneously, at full speed, without losing data; This is achieved by setting aside a block of memory in the PC and gives the dual benefits of freeing the CPU to perform other, more urgent tasks and enabling the PCI-1721 to perform data transfers without the need for CPU intervention.
Recognising the fact that many users will operate multiple PCI-1721 boards in their systems, Advantech has included a built in DIP switch, making it possible to define individual board identifications.
This simplifies matters when accessing each card during hardware configuration and software programming.
Each of the four analogue output channels can perform continuous waveform output at up to 10MS/s.
Alternatively, it is possible to load a cyclic waveform into the on-board 1024 sample capacity FIFO (First In First Out) memory buffer.
This will then give a continuous output of the waveform.
An integral 82C54 chip provides programmable timing for generating the pacer trigger for digital to analogue conversion.
The chip includes three 16-bit counters of 10MHz clock.
One operates as an event counter for the input channel, while the other two are cascaded to provide a 32-bit timer for pacer trigger time base.
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