Photon Focus MV0 CMOSIS Series, User Manual, Page: 53 / 111

9
Frame Rate
The frame rate depends on the image size, the used exposure time and the max data rate of
the GigE interface (MaxDataRateInterface). The image size is given by the image size, which
can be configured by the ROI, MROI and decimation settings (see Chapter 8).
Two different timing situations has to be considered:
• Exposure time is dominant
• Image size is dominant
Depending on the timing situation the frame rate is calculated according to the formula in
Section 9.1 or in Section 9.2. In order to find out what is dominant, both timing situation needs
to be calculated and the lower value defines the maximum frame rate.
9.1 Exposure time is dominant
The frame rate is given by the configured exposure time. The maximal frame rate is in this
case:
FrameRate = (1 / (Exposu FramePause))
FramePause is 40...85
µ
s
9.2 Image size is dominant
The fame rate is given by the configured image size. The maximal frame rate is in this case is
given by the max data rate of the GigE interface:
FrameRate = MaxDataRateInterface / (WidthMax x HeightMax x [Bits per Pixel])
Bits per pixel depends on the PixelFormat settings:
Mono8 8 bit per pixel
Mono10 16 bit per pixel
Mono10Packed 12 bit per pixel
Mono12 16 bit per pixel
Mono10Packed 12 bit per pixel
9.3 Maximum Frame Rate
A list of common used image dimension and its frame rates is shown in Table 9.1. It shows the
maximum possible frame rates when the exposure time is smaller than the read out time.
There is a frame rate calculator in the support section of the Photonfocus web
page www.photonfocus.com, which allows to determine the frame rates for any
available image dimensions and expsoure time settings.
MAN078 12/2018 V1.1 53 of 111