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National Instruments Corporation
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Hardware Overview
This chapter presents an overview of the hardware functions on your
PCI/PXI-1409 board and explains the operation of each functional unit
making up the PCI/PXI-1409.
Functional Overview
The PCI/PXI-1409 features a flexible, high-speed data path optimized for
the acquisition and formatting of video data from analog cameras. The
1409 device can acquire from RS-170/NTSC, CCIR/PAL, VGA, and
progressive scan cameras, as well as from non-standard cameras such as
line scan cameras. The 1409 device digitizes analog video signals to
8 or 10 bits of resolution at sampling frequencies up to 40 MHz.
The 1409 device has a factory calibrated gain circuit to improve
measurement accuracy and board-to-board consistency. It uses a PCI
interface for high-speed data transfer, 16 MB of SDRAM for data
buffering, and region-of-interest control circuitry for optimizing the data
transfer. The 16 MB of SDRAM also allows you to acquire entire images
into on-board memory when necessary. The 1409 device includes four
external triggers, four camera control signals, seven RTSI bus triggers, and
six video synchronization signals.
