Photon Focus D-2048 CameraLink Series, User Manual

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5 Functionality
Simultaneous Read out Timing 1
The exposure time is smaller than the read out time in this timing (see Fig. 5.12). Exposure is
started during the sensor read out of the previous frame.
The maximal frame rate is in this case (values are given in Table 5.5, Table 5.6 and Table 5.7):
MaxFrameRate = 1 / (Reado T TReadoutDel)
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.
The ReadoutTime is the height of ROI multiplied by the read out time of one row (see Table
5.5).
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 T R e a d o u t D e l
Figure 5.12: Simultaneous read out timing 1: exposure time smaller than read out time
Simultaneous Read out Timing 2
The exposure time is bigger than the read out time in this timing (see Fig. 5.13). Exposure is
started during the sensor read out of the previous frame.
The maximal frame rate is in this case (values are given in Table 5.5):
MaxFrameRate = 1 / (Exposu TE TReadoutDel)
TExpDel1 is 1.25
µ
s for the D-160 cameras and 1.042
µ
s for D-240 and L-160 cameras.
The ReadoutTime is the height of the ROI multiplied by the read out time of one row (see
Table 5.5).
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 + 1 >
E x p o s u r e T i m e
R e a d o u t T i m e T R e a d o u t D e l
F r a m e < n >
Figure 5.13: Simultaneous read out timing 2: exposure time bigger than read out time
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