Basler Scout - Page 155

Image Acquisition Control
Basler scout 145
Formula 2:
Calculates the maximum frame rate based on the exposure time for the acquired frames:
Where the constant C
3
depends on the camera model as shown in the table below:
Formula 3:
Calculates the maximum frame rate based on the number of packets needed to transmit a captured
frame from the camera to your host PC via the IEEE 1394 bus:
(round the result up to the nearest integer)
Example
Assume that you are using a monochrome scA640-70 camera set for an exposure time of 2000 µs
and for 600 x 400 resolution. Also assume that you have checked the value of the Payload Size
parameter and the Packet Size parameters and found them to be 327100 and 8192 respectively.
Formula 1:
Max Frames/s = 85.4 frames/s
Camera Model C
3
Camera Model C
3
scA640-70fm/fc 94 µs scA1300-32fm/fc 52 µs
scA640-74fm/fc 90 µs scA1390-17fm/fc 176 µs
scA640-120fm/fc 24 µs scA1400-17fm/fc 173 µs
scA780-54fm/fc 95 µs scA1400-30fm/fc 97 µs
scA1000-20fm/fc 194 µs scA1600-14fm/fc 181 µs
scA1000-30fm/fc 136 µs scA1600-28fm/fc 95.15 µs
Max. Frames/s
1
Exposure time in µs C
3
+
--------------------------------------------------------------------=
Packets per frame
Value of the Payload Size Parameter
Value of the Packet Size Parameter
--------------------------------------------------------------------------------------------------=
Max. Frames/s
1
Packets per frame 125 µs×
-------------------------------------------------------------------------=
Max Frames/s
1
400 1+()25.21 µs×()1595.12 µs+
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