EL-2800M-USB / EL-2800C-USB
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7.1.3 Acquisition frame rate
With Trigger OFF (free-running operation), the default frame rate of the camera is based on the
specified ROI. However, it is possible to set a longer acquisition period than the time required to
read out all pixels in the area set by the ROI command.
This is done by entering a value in the AcquisitionFrameRate control corresponding to the
acquisition frame frequency.
The setting range is:
Shortest
to
Longest
The reciprocal of the time
required to read out all
pixels in the area set by ROI
or
The reciprocal of the time to
transmit one frame data
to
0.125 Hz (fps)
Note:
1. If the trigger is set to ON, this function is not available.
2. The value for setting is Frame Frequency.
3. If the setting value is less than the minimum period corresponding to the default frame
rate, this setting is ignored and camera operates at the minimum period.
Self-running (Trigger OFF) works under the following conditions.
Exposure Mode : OFF
Exposure Mode : Timed and Frame Start OFF
Exposure Mode : Trigger Width and Frame Start OFF.
7.1.3 Frame rate calculation formula
a)
If V Bininng Off and Sensor Geometry 1X2-2YE
Frame_Rate (Hz) = 1000000/
〔[
Height/2 + {(720-(Height/2)-1)/4}
+ 26
]×
24.574
〕
b)
If V Bininng On and Sensor Geometry 1X2-2YE
Frame Rate (fps) = 100000/
〔[
(Height/2) + {(360-(Height/2)-1)/2}
+ 17
]×
29.296
〕
c)
If V Bininng Off and Sensor Geometry 1X-1Y
Frame_Rate (Hz) =
1000000/
【〔
{(OffsetY-1)/7} + [{1440-(O Height)}/15] + 47
〕×
42.519
】
d)
If V Bininng On and Sensor Geometry 1X-1Y
Frame Rate (fps) =
1000000/
【〔
(Height/2)+ {(OffsetY-1)/4} + [{720-(O (Height/2))}/8] +34
×
47.259
】
Note: In this formula, the calculation results underlined must be rounded up.