CV-M9 GE
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To ensure the integrity of packets transmitted from the camera is recommended to follow these
simple guidelines:
1.
Whenever possible use a peer-to-peer network.
2.
When connecting several cameras going though a network switch, make sure it is capable
of handling jumbo packets and that it has sufficient memory capacity.
3.
Configure inter-packet delay to avoid congestion in networks switches.
4.
Disable screen saver and power save functions on computers.
5.
Use high performance computers with multi-CPU, hyper-thread and 64-bit CPU, etc.
6.
Only used Gigabit Ethernet equipment and components together with the camera.
7.
Use at least Cat5e or preferably Cat6 Ethernet cables.
8.
Whenever possible, limit the camera output to 24-bit.
Video bit rate for CV-M9GE is:
24 bit pixel format (GVSP_PIX_RGB8)
566 M bit/s
(1024(H) x 768(V) x30(Frame) x 24(bit))
30 bit pixel format (GVSP_PIX_RGBVD)
755 M bit/s
(1024(H) x 768(V) x30(Frame) x 30(bit))
However, as the UPD Packet Header is added, the real bit rate will increase by 10%.
8.3. Basic functions
A 16-bit processor controls all functions in the CV-M9GE camera. The CCD sensor output is
normalized in preamplifiers. The signals are then digitized to 12 bits. Digital gain control and
look-up tables perform signal processing in 12-bits before it is truncated to a 10 or 8 bit for BGR
GigE Vision standard packet format.
A/D
A/D
A/D
16 bit digital processing
12 bit
B
R
G
Prism
Timing
A. gain
D. Gain
Shading
map
Knee
Point
slope
12 bit
10 bit
Iris video
RGB input
Shading
data
A/D
A/D
A/D
16 bit digital processing
12 bit
B
R
G
Prism
Timing
A. gain
D. Gain
Shading
map
Knee
Point
slope
12 bit
10 bit
Iris video
RGB input
Shading
data
GigE
Cont
roller
RGB 3x8bit signal
RGB 3x10bit signal
12P
RJ-45
Fig. 9. Principle diagram for signal processing
8.3.1. White Balance (by gain setting)
By adjusting the R and B gain settings, it is possible to have correct color balance in the video
output. A white scene will be shown as a white image. This white balance can be done in
different ways:
(1)
Manual white balance (user adjusts gain settings)
(2)
One-push automatic white balance
(3)
Continuous (tracking) automatic white balance
(4)
Pre-defined color temperature settings: 3200K (factory default), 4600K and 5600K.
The register 0xA0C0 is used to select the function.
