4 calculation of data transfer rat, At-200ge – JAI AT-200GE User Manual
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AT-200GE
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9.2.4 Calculation of Data Transfer Rate
In order to calculate the data transfer rate, the following parameters and formula are
required.
Setting parameter
Item
Unit
Symbol
Image Width
[pixels]
A
Image Height
[pixels]
B
Bits per Pixel
[bits]
C
Frame Rate
[fps]
D
Packet Size
[Bytes]
E
Number of Packets (including Data Leader & Trailer
Packet)
[packets]
G
DataTransfer Rate
[Mbit/s]
J
Fixed value
Item
Unit
value
Data Leader Packet Size
[Bytes]
90
Data Trailer Packet Size
[Bytes]
62
Formula to calculate Data Transfer Rate
J={90+62+(E+18)*(G-2)}*8*D/1000000
Where,
G=ROUNDUP{A*B*C/8/(E-36)}+2
The following table shows bits per pixel (Item C) which depends on the pixel format.
Pixel format
Bit
RGB8
24
RGB10V1Packed
32
RGB10V2Packed
32
Calculation example: AT-200GE Pixel type RGB8
Item
Unit
Symbol
Setting
Image Width
[pixels]
A
1624
Image Height
[pixels]
B
1236
Bits per Pixel
[bits]
C
24
Frame Rate
[fps]
D
15.40
Packet Size
[Bytes]
E
4036
Number of Packets (including Data Leader & Trailer
Packet)
[packets]
G
Transfer Data Rate
[Mbit/s]
J
G=ROUNDUP {(1624 x 1236 x 24/ 8 / (4036-36)) + 2 = 1506 + 2 = 1508
J={90+62+(4036+18)x(1508-2)} x 8 x 15.4 / 1000000 = 752 Mbit/s