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CM-030GE/CM-030GE-RA / CB-030GE/CB-030GE-RA
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Formula to calculate Data Transfer Rate
J=
{
90+64+(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
Mono8,BAYGR8
8
Mono10_Packed/Mono12_Packed
12
Mono10,Mono12,BayGR10,BAYGR12
16
Calculation example: CM-140GE Pixel type RGB8
Item
Unit
Symbol
Setting
Image Width
[pixels]
A
656
Image Height
[pixels]
B
494
Bits per Pixel
[bits]
C
8
Frame Rate
[fps]
D
90
Packet Size
[Bytes]
E
1500
Number of Packets (including Data Leader & Trailer
Packet)
[packets]
G
Data Transfer Rate
[Mbit/s]
J
G=ROUNDUP{(656x494x8/8/(1500-36))+2=222+2=224
J={90+64+(1500+18)x(224-2)}x8x90/1000000=243 Mbit/s
8.3.5 Simplified calculation (Approximate value)
A simple way to calculate the approximate data transfer rate is the following.
Transfer data = Image width (pixel) x Image Height (pixel) x depth per pixel(depending
on the pixel format) x frame rate / 1,000,000 (convert to mega bit)
In the case of the CM-030GE with the full image and MONO8 pixel format;
The data transfer rate = 656 x 494 x 8 x 90 / 1000000 = 233 Mbit/s
8.3.6 Note for 100BASE-TX connection
In case of connecting on 100BASE-TX, the maximum packet size should be 1500 byte.
In case of connecting on 100BASE-TX, the specifications such as frame rate, trigger
interval etc. described in this manual cannot be satisfied.
100BASE-T works in FULL DUPLEX. It does not work in HALF DUPLEX.
Pixel Type
Frame rate at Full Frame[fps]
MONO8, BAYRG8, BAYGB8
36.6
~
36.8
MONO10_PACKED
24.4
MONO10, BAYRG10, BAYGB10
18.2
~
18.4