Advantech PCI-1714, User Manual

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3 Chapter 1
1.1.1 32-bit PCI bus Mastering DMA Data Transfer
PCI-1714 cards support PCI bus mastering DMA for high-speed data
transfers. By setting aside a block of memory in the PC, the cards perform
bus-mastering data transfers without CPU intervention, freeing the CPU
to perform other more urgent tasks such as data analysis and graphic
manipulation. The function allows users to run all I/O functions simulta-
neously at full speed without losing data.
1.1.2 Four A/D Converters for Simultaneous Sampling
PCI-1714 cards are capable of simultaneous sampling with their 4 identi-
cal circuits and a dedicated A/D converter for each analog input channel.
When the time relationship between inputs is important, this feature lets
you sample simultaneously.
1.1.3 Supports S/W, Internal & External Pacer Triggering
PCI-1714 cards support three kinds of trigger modes for A/D conversion:
software triggering, internal pacer triggering and external pacer trigger-
ing.
The software trigger can acquire a sample whenever needed, while the
internal pacer saves CPU resources by triggering the sampling at a pre-
programmed frequency. An external pacer can also be used for triggering
by externally connected equipment.
1.1.4 On-board FIFO Memory
There is 32k of FIFO sample memory on PCI-1714, and 8k of FIFO sam-
ple memory on PCI-1714UL. This is an important feature for faster data
transfers and more predictable performance under Windows systems.
1.1.5 Auto Calibration
PCI-1714 cards feature software auto calibration. There is no variable
resister trimming required. This is convenient for user calibration.
Note: For detailed specifications of the PCI-1714
cards, please refer to Appendix A, Specifications.