53
NED
XCM8085DLMT8
UME-0060-04
4.8.3
External Trigger Exposure Mode (Trigger Level)
In external trigger exposure mode (Trigger Level), the exposure time is determined
by the high trigger pulse time, each exposure starts with the rising edge and the line
period is determined by the time rising edge to rising edge of trigger pulse. The range
of programmable exposure time, the timing chart of the exposure and the readout are
shown below.
Table 4-8-3-1 Programmable Exposure Time (Trigger Level)
85MHz
40MHz
r Readout time
8192pixels_8tap
12.05
25.60
8192pixels_4tap
24.09
51.19
8192pixels_2tap
48.19
102.40
4096pixels_4tap
12.05
25.60
4096pixels_2tap
24.09
51.19
a Trigger pulse High
time
8192pixels_8tap
≧
10.706
≧
23.600
8192pixels_4tap
≧
22.000
≧
49.212
8192pixels_2tap
≧
46.095
≧
100.400
4096pixels_4tap
≧
10.706
≧
23.600
4096pixels_2tap
≧
22.000
≧
49.212
b Trigger pulse Low
time
≧
2.200
c Trigger pulse cycle
8192pixels_8tap
≧
12.906
≧
25.800
8192pixels_4tap
≧
24.200
≧
51.412
8192pixels_2tap
≧
48.295
≧
102.600
4096pixels_4tap
≧
12.906
≧
25.800
4096pixels_2tap
≧
24.200
≧
51.412
(unit
:
μs)