FireWire
STINGRAY Technical Manual
V2.2.0
28
1394b bandwidths
According to the 1394b specification on isochronous transfer, the largest
recommended data payload size is 8192 bytes per 125 µs cycle at a band-
width of 800 Mbit/s.
For further details read Chapter
How does bandwidth affect the frame rate?
on page 214.
Requirements for PC and 1394b
One Stingray camera connected to a PC’s 1394b bus can saturate the standard
PCI bus.
1394b also requires low latency for data transmission (due to small receive-
FIFO). In order to get the most out of your camera-to-PC configuration, we
recommend the following chipsets for your PC:
•
For Intel-based desktops, chipset 945 (or higher)
•
For non-Intel based desktops (e.g. AMD), PCI Express compatible
chipset
For multi-camera applications one of the following bus cards is needed:
•
PCI ExpressCard with potential 250 MByte/s per lane (up to 6 supported
by chipset) or
•
64-bit PCI-X card (160 MByte/s)
Note
L
Certain cameras may offer, depending on their settings in
combination with the use of AVT FirePackage higher packet
sizes.
Consult your local dealer's support team, if you require addi-
tional information on this feature.
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For more information:
http://support.intel.com/support/chipsets/#desktop