JAI AD-081GE ユーザーズマニュアル
AD-081GE
26
Regarding data transfer rate, a larger packet size produces a slightly lower data transfer
rate. AD-081GE can support a maximum of 16020 byte packets provided the NIC being used
has a Jumbo Frames function with a setting of a 16020 bytes or larger.
rate. AD-081GE can support a maximum of 16020 byte packets provided the NIC being used
has a Jumbo Frames function with a setting of a 16020 bytes or larger.
Note for calculation of Data Transfer Rate
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)
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 which depends on the pixel format.
Pixel format
Bit
MONO8
8
MONO10
16
MONO10Packed
12
MONO12
16
MONO12Packed
12
Calculation example: AD-081GE Pixel type Mono8
Item
Unit
Symbol
Setting
Image Width
[pixels]
A
1024
Image Height
[pixels]
B
768
Bits per Pixel
[bits]
C
8
Frame Rate
[fps]
D
30.01
Packet Size
[Bytes]
E
1428
Number of Packets (including Data Leader & Trailer
Packet)
Packet)
[packets]
G
Transfer Data Rate
[Mbit/s]
J
G=ROUNDUP {(1024 x 768 x 8 / 8 / (1428-36)) + 2 = 565+ 2 = 567
J={90+62+(1428+18)x(567-2)} x 8 x 30.12 / 1000000 = 196 Mbit/s
J={90+62+(1428+18)x(567-2)} x 8 x 30.12 / 1000000 = 196 Mbit/s