Instruction manual

Guppy PRO Technical ManualV4.1.0
163
Video formats, modes and bandwidth
As already mentioned, the recommended limit for transferring isochronous
image data is 2000q (quadlets) per cycle or 8192 bytes (with 800 Mbit/s of band-
width).
The frame rates in video modes 0 to 2 are specified and set fixed by IIDC V1.31.
Format Mode Resolution 60 fps 30 fps 15 fps 7.5 fps 3.75
fps
1.875
fps
2
0 1280 x 960 YUV (4:2:2)
16 bit/pixel
2H
2560p
1280q
1H
1280p
640q
1/2H
640p
320q
1/4H
320p
160q
1 1280 x 960 RGB
24 bit/pixel
2H
2560p
1920q
1H
1280p
960q
1/2H
640p
480q
1/4H
320p
240q
2 1280 x 960 Y (Mono8)
8 bit/pixel
4H
5120p
1280q
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
5/2H
4000p
2000q
5/4H
2000p
1000q
5/8H
1000p
500q
5/16H
500p
250q
4 1600 x 1200 RGB
24 bit/pixel
5/4H
2000p
1500q
5/8H
1000p
750q
5/16
500p
375q
5 1600 x 1200 Y (Mono) 8
bit/pixel
5H
8000p
2000q
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
2H
2560p
1280q
1H
1280p
640q
1/2H
640p
320q
1/4H
320p
160q
7 1600 x 1200Y(Mono16)
16 bit/pixel
5/2H
4000p
2000q
5/4H
2000p
1000q
5/8H
1000p
500q
5/16H
500p
250q
Table 93: Format_2
Note

• 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 (prede-
cessor of OHCI) have a limit of 4000 bytes per cycle.