CM-030GE-RH
36
8.5.4 RCT Trigger mode
The RCT mode operates like EPS (Edge Pre-select) mode with smearless function. An
external trigger pulse will immediately stop the video read out, reset and restart the
exposure, then operate as normal mode until the next trigger. After the trigger pulse is
input, a fast dump read out is performed. In the CM-030GE-RH, this period is 1.0231ms
which is 63L. The exposure time is determined by the pre-set shutter speed. If no further
trigger pulses are applied, the camera will continue in normal mode and the video signal is
not output. The fast dump readout has the same effect as “smearless readout”. Smear
above bright areas is reduced for the trigger frame.
RCT mode is available only in LVAL asynchronous.
Important notes on using this mode
1. When the shutter setting is either PE=511 or OFF, EEN is kept as HIGH.
2. The minimum trigger interval is as follows ( if PE is 2L):
Scan mode
Minimum interval
[
L
]
Normal Full
578
2/3 Partial
423
1/2 Partial
351
1/4 Partial
243
1/8 Partial
189
Vertical binning
324
Note: In order to keep the minimum trigger interval in the partial scan mode, the
exposure time should not exceed the line number at normal scan. If the exposure time
is set longer than that, the trigger interval is longer by (Exposure time – normal scan
line number). The maximum exposure time is 511L.
Fig. 27 RCT mode
TRIG
1.0231 ms
(63L)
EEN
FVAL
DVAL
FULL: 6L
~
7.1L(97.44us
~
115.30us)
Vbinni ng:4L
~
5.2L(80.27us
~
104.35us)
CCD Exposure