Adimec Camera Link OPAL Series, Operating And Users Manual

Page: 36 / 86

OPERATING AND USER MANUAL OPAL-FAMILY
36
IMAGE CAPTURING AND VIDEO OUTPUT
Used parameters and timing table 7.3
The next paragraphs about the acquisition modes make use of timing diagrams. These diagrams list
parameters that are gathered in table 7.2 below.
CAMERA MODEL TD_IT_BGN TD_IT_END T_DTM_
GAPMIN T FRAME-
MIN
@ NO BIN-
NING T FRAME
MIN
@ 2 LINES
BINNING T FRAME
MIN
@ 4 LINES
BINNING* T FRAME
MIN
@ 8 LINES
BINNING*
OPAL-1000 2 μ s 7.5 μ s 26 μ s 8,127 ms 4,637 ms 2,889 ms 2,029 ms
OPAL-1600 2 μ s 7.5 μ s 26 μ s 14,332 ms 7,850 ms 4,612 ms 3,000 ms
OPAL-2000 2 μ s 7.5 us 26 μ s 15,189 ms 8,227 ms 4,749 ms 3,028 ms
OPAL-4000 2 μ s 9 μ s 26 μ s 29,833 ms 16,791 ms 10,275 ms 7,045 ms
OPAL-8000 2 μ s 10 μ s 26 μ s 56,917 ms 31,077 ms 18,163 ms 11,739 ms
* optional
Timing details Table 7.2:
A short explanation of the timing parameters in this table: There is some time needed to apply a
shutter pulse to the CCD. The CCD will start integrating light (start of exposure) at a shutter action.
Integration will start td_it_bgn after the rising edge of the shutter pulse.
During the time needed to transfer the image from the photo-sensitive area to the storage area, the
CCD will continue to integrate during a short period of time being td_it_end. In other modes than
continuous mode there is an additional demand in timing.
T_dtm_gapmin is only applicable in double transfer mode and double delayed transfer mode.
T_dtm_gapmin lists the minimal time between 2 exposures.
Td_output is the figure for the delay between end of acquisition and start of output. The Vertical
Remap function determines the method of transmitting the pixels at the output. For an extensive
explanation of Vertical Remap refer to par 8.5. Enabling Vertical Remap influences the delay time to
the output. The delay is listed in table 7.3 for the various models.
CAMERA MODEL Td_output VR
DISABLED
Td_output VR
ENABLED
OPAL-1000
≤
410 μ s
≤
4700 μ s
OPAL-1600
≤
720 μ s
≤
7900 μ s
OPAL-2000
≤
760 μ s
≤
8400 μ s
OPAL-4000
≤
1490 μ s
≤
16400 μ s
OPAL-8000
≤
2850 μ s
≤
31300 μ s
Vertical remap timing details - delay time to the output. Table 7.3:
Exposure and image output overlap 7.4
Since acquisition and image output are related but independent processes within the camera, it is
possible to integrate and output images the same time. Figure 7.1 show the sequence of processes
when in normal control mode.