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Important
• Matrox Helios eD/XD also has a bi-color LED per timing and control section to
monitor PLL operation and sychronization signal input.
• Supports an integrated quadrature decoder
Data transfer
Under optimum conditions, Matrox Helios can exchange data with the Host at a
peak transfer rate of up to 1 Gbyte/sec. For Matrox Helios eCL, eA, and eD, these
conditions include using the board in a x4 or x8 PCIe slot with at least 4 active
lanes. For Matrox Helios XCL, XA, and XD, these conditions include using the
board in a 133 MHz PCI-X slot. If Matrox Helios XCL, XA, and XD are used in
a conventional PCI
for a 33 MHz 32-bit PCI slot, 266 Mbytes/sec for a 66 MHz 32-bit PCI slot, and
532 Mbytes/sec for a 66 MHz 64-bit PCI slot).
Although the Matrox Helios boards don't have an integrated display section,
images can be transferred either to any available Matrox display board or a
third-party display board in your computer.
Note that transfer of image data to a display board might require intervention
from the Host CPU, depending on your computer's architecture.
Documentation conventions
This manual refers to all Matrox Helios boards as Matrox Helios. Matrox Helios
eCL/XCL refers to both the dual-Base and the single-Full versions of Matrox
Helios eCL and XCL. In addition, Matrox Helios eA/XA refers to both the Quad
and Single versions of Matrox Helios eA and Matrox Helios XA. When necessary,
this manual distinguishes between Matrox Helios boards using their full name.
Also note that, when the term Host is used in this manual, it refers to the host
computer.
1. Although not documented prior to revision 10879-101-0200 of the manual, a
quadrature decoder has been featured in the PSGs of Matrox Helios frame grabbers
since the first revision of their PCB.
2. 5 V from revision 1 of Matrox Helios XCL; revision 0 is only 3.3 V PCI tolerant.
2
slot, the maximum transfer rate is reduced (132 Mbytes/sec
Matrox Helios boards
1
.
17
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