Table of Contents
Advertisement
8.3.2 Video data rate (network bandwidth)
The video bit rate for the AT-200GE in Normal mode is:
Model
AT-200GE
Note1: Depending on the packet size, the frame rate of 15.45 fps may not be
achieved.
This figure will depend of the system configuration used (RESEND not possible)
If Jumbo Frames (Max.16020) are not used, the packet data will be bigger by 2%.
If Jumbo frames are used, the packet size may be automatically optimized to a
smaller size.
For details of setting Jumbo Frames, please refer to the "Getting Started
Guide".
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 AT-140GE 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.
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.
8.2.4 Calculation of Data Transfer Rate
In order to calculate the data transfer rate, the following parameters and formula are
required.
Setting parameter
Item
Image Width
Image Height
Bits per Pixel
Frame Rate
Packet Size
Number of Packets (including Data Leader & Trailer
Packet)
Data Transfer Rate
Fixed value
Item
Data Leader Packet Size
Data Trailer Packet Size
AT-200GE
Pixel Type
Frame Rate
RGB8Packed
15.45 fps
RGB10V1Packed
Approx.
RGB10V2Packed
14.5fps
Packet data volume
(assumes the packet size is 4036)
769 Mbit/s
966 Mbit/s
Unit
[pixels]
[pixels]
[bits]
[fps]
[Bytes]
[packets]
[Mbit/s]
Unit
[Bytes]
[Bytes]
- 29 -
Symbol
A
B
C
D
E
G
J
value
90
64
Advertisement
Table of Contents
