JAI CMCB-140 MCL, Руководство пользователя

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CMCB-140 MCL/CM-140MCL-UV/CMCB-140 PMCL
16
6.2.4. Partial Scan
Partial scan allows higher frame rate by reading out a smaller center portion of the image. This is
particularly useful when inspecting objects that do not fill the whole height of the image.
Full scan Partial scan
Vertical Timing
The below diagram and table provide vertical timing information for the fixed partial scan settings
1/2, 1/4, 1/3 and 2/3
Values for vertical timing in partial scan continuous mode.
AREA
FVAL Low
(L)
A
(L)
B (L) C
(L)
Total line
(L)
frame rate(L)
Start line End line MCL/PMCL UV
1/2 3 91
520
88L 702L 46.57 24.19
261 780
1/4 3 134
260
131L 528L 61.92 32.16
391 650
1/8 3 156
130
153L 442L 73.97 38.41
456 585
2/3 3 62
694L
59L 818L 39.97 20.76
174 867
Remark! The color sequence for CB-140MCL/MPCL differs in partial scan. Refer to chapter 6.1.7
.
Fig. 18. Vertical timing for partial scanning
Vertical Video Timing
Partial Frame Read out
CCD Exposure
LVAL
FVAL
DVAL
DATA
EEN
XEEN
Valid data
3L
A
B
C
Fast-dump period
Fast-dump period
Normal scan period