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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