Frame Rates - Allied Vision Technologies F-201B AVT Dolphin Manual

This increases light sensitivity by a total of a factor of 4 and at the same time signal to
noise separation is improved by about 6 dB. Resolution is reduced to 814 x 618 pixels.
Figure 36 Full binning
8.3

Frame rates

An IEEE-1394 camera requires bandwidth to transport images.
The IEEE-1394a bus has very large bandwidth of at least 32 MB/s for transferring
(isochronously) image data.
Depending on the video format settings and the configured frame rate the camera
requires a certain percentage of maximum available bandwidth.
The following tables indicate how much data in various formats and modes can be sent
within one cycle (125µs) at 400 Mb/s of bandwidth.
They enable you to calculate the required bandwidth and to ascertain the number of
cameras that can be operated independently on a bus and in what mode.
Format
0
44
Mode Resolution
160 x 120 YUV (4:4:4)
0 24 bit/pixel
320 x 240 YUV (4:2:2)
1 16 bit/pixel
640 x 480 YUV (4:1:1)
2 12 bit/pixel
640 x 480 YUV (4:2:2)
3 16 bit/pixel
640 x 480 RGB
4 24 bit/pixel
640 x 480 (MONO)
5 8 bit/pixel
640 x 480 Y (MONO 16)
6 16 bit/Pixel
640 x 480 Y (MONO 16)
7 Reserved
60 30 15
fps fps fps
1/2H 1/4H
80p 40p
60q 30q
1H 1/2H
320p 160p
160q 80q
2) 2H 1H
1280p 640p
480q 240q
4) 2H 2) 1H
1280p 640p
640q 320q
4) 2H 2) 1H
1280p 640p
960q 480q
4) 4H 2) 2H 1H
2560p 1280p 640p
640q 320q 160q
4) 2H 2) 1H
1280p 640p
640q 320q
7.5 3.75
fps fps
1/8H
20p
15q
1/4H 1/8H
80p 40p
40q 20q
1/2H 1/4H
320p 160p
120q 60q
1/2H 1/4H
320p 160p
160q 80q
1/2H 1/4H
320p 160p
240q 120q
1/2H 1/4H
320p 160p
80q 40q
1/2H 1/4H
320p 160p
160q 80q