Multiple cameras: Init1394 init resets bandwidth

[Matthias]

I'm using 3 AVT stingray cameras at one 1394b-bus (800 Mbps, Format 7, Mode 0). The cameras are correctly configured with MAX, grabbing all cameras (with 3 MAX-windows) simultaneously is possible. When the cameras are initialized with IMAQ1394 init.vi, the first camera keeps the bus bandwidth at 800 Mbps, but the bus bandwidth of the second and third camera is reduced to 100 Mbps. This results in error -1074364394 ("Insufficient resources available for the required video mode"). Seems to be a bug. The problem can be solved by programatically setting "Format7Speed" to 800 Mbps for each camera.

Matthias

[ScottSmith]

Hi Matthias,

Which specific Stingray models (e.g. 033B,  201C, etc.), in what "color" mode (e.g. Mono8, Mono16, YUV411, etc.),  at what timebase and shutter settings?   Attached to what make/model of 1394b adapter card?  On what OS and SP and 1394 driver (rollback?).

Best regards,

Scott

Scott Smith

Allied Vision Technologies / Prosilica

[Matthias]

Hi Scott

• 3x Stingray F145C
• YUV 422
• Packet Size: 2000 bytes/packet (-> ~ 5 fps)
• Shutter register 0xF0F0081C: 0x80000032
• 1394b-PCCard (AVT)
• 1394b bus driver package (AVT, V1.0)
• XP SP3

Best regards

Matthias

ADLARES GmbH