NED
UME-0017-08
SUCL2025T3
35
4.8.3
External Trigger (Ext Level) Exposure
Mode
In external trigger exposure mode (Trigger
Level), the exposure time is determined by
High time period of the external trigger pulse(CC1), the line period is determined by
trigger pulse time, and the exposure starts with the rising edge of the trigger pulse. The
range of programmable exposure time, the timing chart of the exposure and the readout
are shown below.
Exposure
Readout
①
①
②
Trigger
②
①
②
③
③
(CC1)
c
b
a
r
Figure 4-8-3-1 External Trigger Exposure Mode (Trigger Level)
The data of Exposure (1) is read out at Readout (1)
C in the above figure must not be less than 92.4
s.
When using External Trigger (Ext Level) Exposure Mode, exposure time (
“a” in the above
figure) must not be less than 90.4
s.
valid data 2098 pixels
invalid data(O)
invalid data
（０）
CLK
(25M)
CST
VIDEO
LVAL
CC1
Line
period 92.4
μ
s
<
2098 CK
Exposure
time 2u
s
<
90.4us <
Figure 4-8-3-2 External Trigger Exposure Mode (Trigger Level)
