Allied Vision Technologies F-131B, Technical Manual, Page: 118 / 183

Video formats, modes and bandwidth
For-
mat Mode Resolution 60
fps 30
fps 15
fps 7.5
fps 3.75
fps 1.875
fps
0 1280 x 960 YUV
(4:2:2)
16 bit/pixel
1H
1280p
640q 1/2H
640p
320q 1/4H
320p
160q
1 1280 x 960 RGB
24 bit/pixel
1H
1280p
960q 1/2H
640p
480q 1/4H
320p
240q
2 1280 x 960 Y (MONO8)
8 bit/pixel 2H
2560p
640q 1H
1280p
320q 1/2H
640p
160q 1/4H
320p
80q
3 1600 x 1200
YUV(4:2:2)
16 bit/pixel
5/4H
2000p
1000q 5/8H
1000p
500q 5/16H
500p
250q
4 1600 x 1200 RGB
24 bit/pixel
5/8H
1000p
750q 5/16
500p
375q
5 1600 x 1200 Y (MONO)
8 bit/pixel
5/2H
4000p
1000q 5/4H
2000p
500q 5/8H
1000p
250q 5/16H
500p
125q
6 1280 x 960 Y
(MONO16)
16 bit/pixel
1H
1280p
640q 1/2H
640p
320q 1/4H
320p
160q
2
7 1600 x
1200Y(MONO16) 16
bit/pixel 5/4H
2000p
1000q 5/8H
1000p
500q 5/16H
500p
250q
Table 61: Format_2
As already mentioned, the recommended limit for transferring isochronous image data is 1000q
(quadlets) per cycle or 4096 bytes (with 400 Mb/s of bandwidth).
The third table shows that a MF-145B2 @ 7.5 fps has to send 1280 pixels or 1 line of video per
cycle. The camera thus uses 32 % of available bandwidth. This allows up to three cameras with
these settings to be operated independently on the same bus.
If the cameras are operated with an external trigger the maximum trigger frequency may
not exceed the highest continuous frame rate, so preventing frames from being dropped or
corrupted.
IEEE-1394 adapter cards with PCILynx™ chipsets have a limit of 4000 bytes per cycle.
The frame rates in video modes 0 to 2 are specified and set fixed by IIDC V. 1.3.
MARLIN Technical Manual
Page 118