49
Configuration Example
9.6.2
For the three used cameras the following data are known:
Camera
Model
Sensor
Resolution
[Pixel]
Pixel Format
(Pixel Depth)
[bit]
Data
Volume
[bit]
Readout
Time
[msec]
Exposure
Time
[msec]
Transfer Time
(DualGigE)
[msec]
SXG10 1024 x 1024
8
8388608
8
6
≈ 3,91
SXG20 1600 x 1200
8
15360000
15
6
≈ 7.15
SXG80 3296 x 2472
8
65181696
56
6
≈ 30.35
The sensor resolution and the readout time (t
▪
readout
) can be found in the respective
Technical Data Sheet (TDS). For the example a full frame resolution is used.
The exposure time (t
▪
exposure
) is manually set to
6
msec.
The resulting data volume is calculated as follows:
▪
Resulting Data Volume = horizontal Pixels × vertical Pixels × Pixel Depth
The transfer time (t
▪
transferGigE
) for full Dual-GigE transfer rate is calculated as follows:
Transfer Time (Dual-GigE) = Resulting Data Volume / 1024
3
× 500 [msec]
All the cameras are triggered simultaniously.
The transmission delay is realized as a counter, that is started immediately after the sen
-
sor readout is started.
Camera 1
(HXG20)
Trigger
Camera 2
(HXG40)
Camera 3
(SXG80)
t
exposure(Camera 1)
t
exposure(Camera 2)
t
exposure(Camera 3)
t
readout(Camera 3)
t
transferG gE(Camera 3)
t
readout(Camera 2)
t
transferGigE(Camera 2)
t
readout(Camera 1)
t
transfer(Camera 1)*
TransmissionDelay
Camera 2
TransmissionDelay
Camera 3
Timings:
A - exposure start for all
cameras
B - all cameras ready for
transmission
C - transmission start
camera 2
D - transmission start
camera 3
* Due to technical issues
the data transfer of
camera 1 does not take
place with full Dual-GigE
speed.
◄ Figure 55
Timing diagram for the transmis-
sion delay of the three employed
cameras, using even exposure
times.