User Manual
Gobi-640-17µm and Gobi-384-25µm-GigE, CL, CXP Camera
4.4. Gobi-640/Gobi-384-GigE Interface
GigE Vision
®
is a camera interface standard that uses the Gigabit Ethernet (GigE)
communication protocol. It provides a framework for transmitting high-speed video and
related control data over Ethernet networks.
To realize the GigE communication the Gobi-GigE cameras are equipped with a 1000Base-
T Ethernet interface (RJ-45 connector). The data connection between camera and PC can
be established via a standard CAT5e cable.
The GigE Vision standard defines how compliant products interact to deliver video and
control information over Ethernet networks. It has the following four main elements:
Device discovery
: defines the sequence of events required for compliant devices to
obtain valid Internet Protocol addresses, and for control applications to discover
compliant devices.
GigE Vision control protocol (GVCP)
: defines how to specify video stream channels
and control and configure compliant devices.
GigE Vision stream protocol (GVSP)
: defines how images are packetized and
provides mechanisms for cameras or other types of video transmission systems to send
image data and other information to compliant receivers.
An extensible mark-up language (XML) description file
: provides the equivalent of a
computer-readable data sheet of features in compliant devices. This file must be based
on standard defined by the
4.5. Gobi-640 CXP Interface
CoaXPress (CXP) is an asymmetric high speed serial communication standard
over coaxial cable. The Gobi-CXP camera can be interfaced to a CoaXPress frame
grabber by a single coaxial cable (characteristic impedance of 75
Ω
) without an external
power supply or extra cables for uplink communication to the camera.
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