JAI AT-140GE - Manual (Page 28)

AT-140GE
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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
Data Transfer 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-140GE Pixel type RGB8
Item Unit Symbol Setting
Image Width [pixels] A 1392
Image Height [pixels] B 1040
Bits per Pixel [bits] C 24
Frame Rate [fps] D 20.77
Packet Size [Bytes] E 4036
Number of Packets (including Data Leader & Trailer
Packet)
[packets] G
Transfer Data Rate [Mbit/s] J
G=ROUNDUP {(1392 x 1024 x 24/ 8 / (4036-36)) + 2 = 1086 + 2 = 1088
J={90+62+(4036+18)x(1088-2)} x 8 x 20.77 / 1000000 = 732 Mbit/s