Photon Focus MV-D752-28, User Manual, Page: 34 / 61

MV-D752-28 User’s Manual
REV: 1.0 Page 34/61
10.4 Summary of the most important operation modes and their significance
Table 21: Overview of the operation modes
Operation mode Description
MCLK Master clock: camera works with external clock generator. Used for
synchronizing several camera systems
Exsync External synchronization: camera is externally triggered and
delivers image date in response to a trigger signal
CFR Constant frame rate: ensures constant frame rate (data quantity),
in that the camera delivers only a limited number of
images/second (at constant exposure time). The number of
images/second can be set
Skim-Mode Skimming: increases small signal gain at sensor level and thus
increases camera sensitivity
Flip Image Turns image upside down
8bit Camera delivers 8 bit data (Gray levels 0..255)
LUT Look-Up-Table: 10 bit sensor data are represented as 8 bits, using
an LUT internal to the camera (freely selectable).
Camera delivers 8 bit data (Gray levels 0..255)
10bit Camera delivers 10 bit data (Gray levels 0..1023)
LFSR Linear-Feedback-Shift-Register: generates a pseudo-random
image, so that errors can be identified in the complete image
processing system
LOG-Mode Pure logarithmic mode: the pixels function as simple photo-diodes
and are continuously exposed to the light source.
Because of the diode characteristics, the high gain mode must be
active. With this mode, an FPN correction is necessary because
variations in the pixel structures directly influence the image
quality.
LinLog2-Mode Linear-logarithmic mode: increases the image contrast by up to
120dB, without losing the advantages of a “Global Shutter”
HighGain Gain 4: increases the gain in the analog path by a factor of 4 and
thus makes the camera more sensitive
Linehopping
(Zeilensprung) Line jump: individual lines are selectively jumped over and not
output. The maximum frame rate thus increases linearly.
Decimation Pixels are jumped over in the x- and y-directions, in such a way
that the image diagonal is retained
ROI Region Of Interest: selected windows of the sensor are read out,
reducing the quantity of data at constant resolution.
Linepause A break in the clock cycles, occurring after the line has been output
and before starting readout of the next line. Improves the image
quality for non-centered ROI and allows adaptation to frame
grabber requirements
Full details of the various modes may be found in chapters 5 to 10.