53
NED
RCDL2K20CL
UME-0115-02
4.8.2 External Trigger Exposure Mode (External trigger edge)
In the external trigger (Ext Edge) exposure mode, the line cycle is set by the cycle of
the trigger (CC1) signal and the exposure start is set by the rising edge of the trigger
(CC1) signal.
The exposure time is set in the camera control register.
The line cycle and exposure time that can be set are as follows.
Table 4-8-2-1 Programmable Exposure Time(Trigger Edge)
a
Trigger pulse H time
(
μsec.)
≧
2.9
b
Trigger pulse L time
(
μsec.)
≧
2.9
c
Trigger pulse cycle
(
μsec.)
≧
50.0
p
Programmable exposure time
(
μsec.)
2.000
～
1997.700
*1
*1
：
The programmable exposure time (μsec.) can be set in increments of 0.100μsec..
The relations of the progr
ammable exposure time (μsec.) and the t
rigger pulse cycle
(μsec.)
are as follows.
Programmable exposure time (p)
≦
t
rigger pulse cycle
(c) -
2.3 μsec.
Exposure
①
②
Trigger
①
②
③
③
(CC1)
a
b
p
c
④
④
⑤
⑤
Figure 4-8-2-1 External Trigger (Trigger Edge) Exposure Mode
Note:
The timing of reading out does one scanning delay from the exposure.
