CM-080GE/CM-080GE-RA / CB-080GE/CB-080GE-RA
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8. Network configuration
For details of the network settings, please refer to the “Getting Started
Guide” supplied with the JAI SDK.
8.1. GigEVision Standard interface
The CM-140GE and CB-140GE series are designed in accordance with the GigE Vision
standard. Digital images are transmitted over Cat5e or Cat6 Ethernet cables. All
camera functions are also controlled via the GigE Vision interface.
The camera can operate in Continuous mode, providing an endless stream of images.
For capturing individual images related to a specific event, the camera can also be
triggered. For precise triggering, it is recommended to use a hardware trigger applied
to the Hirose 12-pin connector. It is also possible to initiate a software trigger through
the GigE Vision interface. However, when using a software trigger, certain latency
inherent to the GigE interface must be expected. This latency, which manifests itself
as jitter, greatly depends on the general conditions and traffic on the GigE connection.
The frame rate described in this manual is for the ideal case and may deteriorate
depending on conditions.
When using multiple cameras (going through a switch and/or a single path) or when
operating in a system with limited transmission bandwidth the Delayed Readout Mode
and Inter-Packet Delay functions can be useful.
8.2. Equipment to configure the network system
8.2.1 PC
The PC used should have the following performance or better
1) Recommended CPU
: Core2 Duo 2.4GHz or better,
Better than Core2 Extreme
2) Recommended memory
: 2Gbyte or more
3) Video card
: Better than PCI Express Bus Ver.1.0 x16
VRAM should be better than 256MByte, DDR2
4) Other
: The resident software should not be used
8.2.2 Cables
GigEVision configures the system by using 1000BASE-T. (100BASE-T can be used with
some restriction. Refer to chapter 8.3.6). In the market, CAT5e (125MHz), CAT6
(250MHz) and CAT7 (600MHz) cables are available for 1000BASE-T. There are
crossover cables and straight through cables available. Currently, as most equipment
complies with Auto MDI/MDI-X, please use straight through cables. (Among crossover
cables, a half crossover type exists, which the Ethernet will recognize as 100BASE-T).
8.2.3 Network card (NIC)
The network card should comply with 1000BASE-T and also have the capability of
JUMBO FRAMES. When the jumbo frame size is set at a larger number, the load on the
CPU will be decreased. Additionally, as the overhead of the packet is decreased, the
transmission will have more redundancy.