Photon Focus MV1-D2080(IE) Series, User Manual, Page: 39 / 119

Frame time Frame time is the inverse of the frame rate.
Exposure time Period during which the pixels are integrating the incoming light.
PCLK Pixel clock on CameraLink
®
interface.
SHUTTER
Internal signal, shown only for clarity. Is ’high’ during the exposure
time.
FVAL
(Frame Valid) Is ’high’ while the data of one complete frame are transferred.
LVAL (Line Valid) Is ’high’ while the data of one line are transferred. Example: To transfer
an image with 640x480 pixels, there are 480
LVAL
within one
FVAL
active
high period. One
LVAL
lasts 640 pixel clock cycles.
DVAL (Data Valid) Is ’high’ while data are valid.
DATA Transferred pixel values. Example: For a 100x100 pixel image, there are
100 values transferred within one
LVAL active high period, or 100*100
values within one FVAL period.
Line pause Delay before the first line and after every following line when reading
out the image data.
Table 4.2: Explanation of control and data signals used in the timing diagram
These terms will be used also in the timing diagrams of Section 4.4.
4.1.3 Exposure Control
The exposure time defines the period during which the image sensor integrates the incoming
light. Refer to Section 3.4 for the allowed exposure time range.
4.1.4 Maximum Frame Rate
The maximum frame rate depends on the exposure time and the size of the image (see Section
4.3.)
.
4.1 Image Acquisition 37