Photon Focus MV1-R1280-50 Series, User Manual, Page: 34 / 103

5 Functionality
5.1.2 Maximal Frame Rate
The maximal frame rate of the camera depends on the camera settings. The following factors
influence the maximal frame rate (see also Table 5.1):
• The length of the exposure time: A shorter exposure time can lead to an increase in the
maximal frame rate.
• ROI height: a smaller height ROI can lead to an increase in the maximal frame rate.
The maximal frame rate of the camera can be determined by a frame rate calculator in the
support section of the Photonfocus web page www.photonfocus.com. The maximal frame rate
with the current camera settings can be read out by the camera register
AcquisitionFrameRateMax in PF_GEVPlayer or with the SDK.
To avoid a sensor artifact, the exposure must start at a fixed position from the
start of the read out of one row. Therefore the exposure start must be delayed
by a time TExpDel which can be as long as the read out of one row.
Exposure time < read out time
When the exposure time is smaller than the read out time then the maximal frame rate
depends only on the height of the ROI (see Fig. 5.1).
MaxFrameRate = 1 / ReadoutTime
ReadoutTime = h * 28.8
µ
s
T r i g g e r
E x p o s u r e
R e a d o u t
F r a m e < n > F r a m e < n + 1 >
E x p o s u r e T i m e
R e a d o u t T i m e
Figure 5.1: Read out timing 1: exposure time smaller than read out time
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