Re: basler camera on firewire
Brought to you by:
aeb,
bencollins
From: Stefan R. <st...@s5...> - 2011-11-08 13:12:41
|
On Nov 07 Robert Lemmen wrote: > ok, I have found another firewire card. it says "ma-133" on it, and > lscpi says: > > 03:02.0 FireWire (IEEE 1394): VIA Technologies, Inc. VT6306/7/8 [Fire > II(M)] IEEE 1394 OHCI Controller (rev 46) > > this card has two jumpers on it labeled "Internal 12V" and "External > 12V". It also has a white 4-pin power connector. [...] > so: > - is that other chip (VIA VT6306) ok? Yes, it is. I have used VT6306 successfully with various different audio, video, and storage devices; also with multiple devices on the bus at once. There are some known problems though: - Audio device aggregation by FFADO does not work on this chip. This is a common problem of many other chips also. - DV capture with the gstreamer DV plugin or with the dv4lstart V4L2 device emulator does not work. This is a unique problem of VT6306. > - has anyone a similar card? what have you set your jumpers to? I don't. > - there is another 8-pin jumper block, anyone knows what that is good > for? This could be a header for a front panel breakout cable. VT6306 is a three-port chip, so if this card has got three ports already at its back plate, then such an internal connector would share pins with one of the external connectors. Only one of the shared connectors can be used at a time then, and signal quality on either connector is probably lower than on proper port connectors. On top of that, a breakout cable or any kind of passive extension cable would degrade the signal even more. Many 1394 PCI cards offer an internal 1394 connector, usually in the form of a regular 1394 6-pin socket or a 1394b 9-pin socket. Motherboards with onboard 1394 chip and an internal 1394 port on the other hand usually offer that internal port in the form of a pin header, looking like a jumper block. There might be PCI cards with pin header as internal connector too. That jumper block on your card might serve other purposes, but an internal 1394 port is IMO the most plausible explanation in case of a VT6306 based card. -- Stefan Richter -=====-==-== =-== -=--- http://arcgraph.de/sr/ |