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CM-030GE/CM-030GE-RA / CB-030GE/CB-030GE-RA
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8.3.2 Video data rate (network bandwidth)
The video bit rate for CM-030GE/CM-030GE-RA and CB-030GE/CB-030GE-RA is:
In case of using Jumbo Frame, the packet data will be improved by 2 %.
For CM-030GE/CM-030GE-RA and CB-030GE/CB-030GE-RA, the jumbo frame can be set at
maximum 4040 Bytes (Factory setting is 1440 Bytes). To set Jumbo Frame, refer to chapter 8.2.4.
8.3.3 Note for setting packet size
The packet size is set to 1428 as the factory default. Users may enter any value for the
packet size and the value will be internally adjusted to an appropriate, legal value that
complies with the GenICam standard. The packet size can be modified in the GigE
Vision Transport Layer Control section of the camera control tool.
Regarding data transfer rate, a larger packet size produces a slightly lower data
transfer rate. The CM-030GE and CB-030GE sereis can support a maximum of 4040 byte
packets provided the NIC being used has a Jumbo Frames function with a setting of a
4040 bytes or larger.
Caution: Do not set the packet size larger than the maximum setting available in
the NIC or switch to which the camera is connected . Doing so will cause
output to be blocked.
8.3.4 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]
64
Model
Pixel Type
Packet data volume
(In case the Packet size is 1500)
CM-030GE/CM-
030GE-RA
MONO8
243Mbit/s
MONO10_PACKED
364Mbit/s
MONO10
485Mbit/s
CB-030GE/CB-
030GE-RA
BAYRG8,BAYGB8
243Mbit/s
BAYRG10,BAYBG10
485Mbit/s