Photon Focus MV3-D640I-M01-144-CL, User Manual, Page: 52 / 121

8 Frame Rate
8.3 Common parameters
Some parameters and formulas that are used in the following sections are:
ReadoutTime = (Width/16 + 18)*( 1) / 9 * 10
3
[s]
The maximal frame rate only considering the maximal data rate is:
MaxFrameRateData = MaxDataRateInterface / (Width * Height * BitsPerPixel)
Where BitsPerPixel is 8 in Mono8 pixel format, 12 in Mono10Packed and Mono12Packed pixel
formats and 16 in Mono10 and Mono12 pixel formats.
Some common constants are listed in Table 8.1.
Camera TIntSampling TReadoutDel
D640I-M01 0.016 ms 0.006 ms
Table 8.1: Frame overhead times
8.4 Sequential Read-out Timing
This timing is applied when camera is in sequential read-out mode. Exposure is started after
the sensor read out of the previous frame.
The maximal frame rate is in this case:
MaxFrameRate = 1 / (Exposure Time + TRead ReadoutTime)
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 >
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 >
E x p o s u r e T i m e
Figure 8.1: Sequential Read-out Timing
8.5 Interleave Read-out Timing 1
This timing is applied if Exposure Time <= (Read Out Time + TIntSampling). Exposure is started
during the sensor read out of the previous frame and the exposure time is smaller or equal
than the read out time plus the integration sampling time (see Fig. 8.2). During the integration
sampling time (
TIntSampling ), the sensor prepares the next frame for reading out.
The maximal frame rate is in this case:
MaxFrameRate = min(1 / (TRead Reado TIntSampling), MaxFrameRateData)
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 which can be as long
as the read out of one row.
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