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Chapter 1
PCI-1712/1712L User’s Manual
Advantech Co., Ltd.
www.advantech.com
PCI-Bus Mastering Data Transfer
The PCI-1712/1712L supports PCI-Bus mastering DMA for high-speed
data transfer and gap-free analog input and analog output. By setting
aside a block of memory in the PC, the PCI-1712/1712L performs bus-
mastering data transfers without CPU intervention, setting the CPU
free to perform other more urgent tasks such as data analysis and
graphic manipulation. The function allows users to run all I/O func-
tions simultaneously at full speed without losing data.
Plug-and-Play Function
The PCI-1712/1712L is a Plug-and-Play device, which fully complies
with the PCI Specification Rev 2.2. During card installation, you have
no need to set any jumpers or DIP switches. Instead, all bus-related
configurations such as base I/O address and interrupt are automati-
cally done by the Plug-and-Play function.
On-board FIFO Memory
The PCI-1712/1712L provides an on-board FIFO (First In First Out)
memory buffer, storing up to 1K samples for A/D and 32K for D/A
conversion (PCI-1712 only).
Automatic Channel/Gain/SD*/BU* Scanning
PCI-1712/1712L features an automatic channel/Gain/SD/BU scanning
circuit. This circuit controls multiplexer switching during sampling in a
way that is much more efficient than software implementation. On-
board SRAM stores different gain, SD and BU values for each channel.
This combination lets user perform multi-channel high-speed sampling
with different gain, SD and BU values for each channel.
SD: Single-Ended/Differential Analog Input
BU: Bipolar/Unipolar
Flexible Triggering and Clocking Capabilities
The PCI-1712/1712L provides flexibility in triggering action, both in the
available trigger modes and trigger events for analog input. You can
acquire data using post-trigger, pre-trigger, delay-trigger and about-
trigger modes. The trigger source could be either analog or digital
signal. The analog trigger could originate from a dedicated input pin.
In fact, you can designate any of the analog input channels as the
analog trigger input. You can also set the analog trigger level within a
voltage range from zero to A/D FSR. When trigger signal being digital,
you can pace A/D and D/A conversion using software interrupt,
internal or external clock.