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Overview
Xtium-CL PX4 User's Manual
DTE: Intelligent Data Transfer Engine
The Xtium-CL PX4 intelligent Data Transfer Engine ensures fast image data transfers between the
board and the host computer with zero CPU usage. The DTE provides a high degree of data
integrity during continuous image acquisition in a non-real time operating system like Windows.
DTE consists of multiple independent DMA units, Tap Descriptor Tables, and Auto-loading Scatter-
Gather tables.
PCI Express x4 Gen2 Interface
The Xtium-CL PX4 is a universal PCI Express x4 Gen2 board, compliant with the PCI Express 2.0
specification. The Xtium-CL PX4 board achieves transfer rates up to 1.8Gbytes/sec. to host
memory. Note that performance can be lower depending on PC and/or programmed configuration.
The Xtium-CL PX4 board occupies one PCI Express x4 Gen2 expansion slot and one chassis
opening.
Important:
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To obtain maximum transfer rate to host memory, make sure the Xtium-CL PX4 is in a Gen2
slot. Although the board will work in a Gen1 slot, only half the performance is achieved.
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If the computer only has a PCI Express x16 slot, test directly or review the computer
documentation to know if the Xtium-CL PX4 is supported. Many computer motherboards only
support x16 products in x16 slots, which are commonly graphic video boards.
Advanced Controls Overview
Visual Indicators
Xtium-CL PX4 features 3 LED indicators to facilitate system installation and setup. These indicators
provide visual feedback on the board status and camera status.
External Event Synchronization
Trigger inputs and strobe signals precisely synchronize image captures with external events.
Camera Link Communications Ports
One PC independent communication port provides Camera Link camera configuration. This port
does not require addition PC resources like free interrupts or I/O address space. Accessible via the
board device driver, the communication port presents a seamless interface to Windows-based
standard communication applications like HyperTerminal, etc. The communication port is accessible
directly from the Camera Link connectors.
Quadrature Shaft Encoder
An important feature for web scanning applications, the Quadrature Shaft Encoder inputs allow
synchronized line captures from external web encoders. The Xtium-CL PX4 provides an RS-422
input that supports a tick rate of up to 5 MHz.