51
NED
XCM8085DLMT8
UME-0060-04
4.8.2 External Trigger Exposure Mode (External trigger edge)
In external trigger exposure mode (Trigger Edge), the exposure time is determined
by the setting through the serial communication, each exposure starts with the rising
edge and the line period is determined by the time from rising edge to rising edge of
the trigger pulse. The range of programmable exposure time, the timing chart of the
exposure and the readout are shown below.
Table 4-8-2-1 Programmable Exposure Time
85MHz
40MHz
p
Programmable
exposure time
8192pixels_8tap 10.76
~
12336.2
23.65
~
26214.3
8192pixels_4tap 22.04
~
12336.2
49.26
~
26214.3
8192pixels_2tap 46.14
~
12336.2 100.45
~
26214.3
4096pixels_4tap 10.76
~
12336.2
23.65
~
26214.3
4096pixels_2tap 22.04
~
12336.2
49.26
~
26214.3
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 H time
≧
0.026
b
Trigger pulse L time
≧
0.026
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)