AM-800CL / AB-800CL
- 36 -
7.8. Edge-dump mode (so-called RCT)
Until the trigger is input, the camera operates continuously and the video signal for the
auto-iris lens is output. At this moment, the video signal, FVAL and LVAL are output but
DVAL is not output. When the trigger is input, the fast dump is activated to read out
the electronic charge very quickly, after which the accumulation and the readout are
performed. This fast dump period is 17.19ms. When the accumulated signal against the
trigger is read out, FVAL , LVAL and DVAL are output too.
The frame rate for full pixels readout is;
AM-800CL is “17.0 Fast dump Exposure time”
AB-800CL is “8.5fps + Fast dump Exposure time”
Primary settings to use this mode
Acquisition control
Acquisition frame rate:
AR= 1
～
42964
Exposure mode:
EM=1 (Timed)
Auto mode: ASC=1 (Continuous)
Trigger dump: TD=1
（
Dump ON)
Note
：
The AM-800CL and AB-800CL gives priority to the frame rate over the exposure
time. If the exposure time is set at longer than 58.73ms (1 frame period), the frame
rate must be increased so that it is longer than the exposure time.
Minimum interval of the trigger pulse
Readout mode
FULL
2/3 AOI
1/2 AOI
1/4 AOI
1/8 AOI
Minimum frame line
2772
2261
2003
1616
1424
Trigger
CCD Exposure
EEN
XEEN
FVAL
DVAL
17.19ms
4.5L
～ 5.5L
Fig.34 Trigger dump mode timing
