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CV-A20
CL / CV-A80
CL
Strobe output in Strobe-Preset Snap-Shot mode
The strobe output is initiated by the falling edge of External Trigger pulse and it can be delayed
by commands ENL (Strobe Enable Delay - Lines) and ENP (Strobe Enable Delay - Pixels).
The Strobe Period is determined by command RB (Read Begin) and after the setting period by
Read Begin, the data read out will start.
Note : When ENL and ENP are set to "0", the delay between the trigger signal and the strobe out is
35 clk ± 1 clk ( 471.45 ns ± 13.5 ns ).
Setting Exposure Time by Read Begin ( RB Command
6.4.
Operation Modes
6.4.1.
Continuous operation
In this mode camera is continuously running without external trigger. Window scan can be used in
this mode.
Please refer the timing details in Fig. 17 and Fig. 18 as well as chapter 6.1.3 for the windowing
timing chart.
To use this mode
Set
function:
Trigger
mode
"Continuous"
TR
=
0
Shutter Mode "Pre-set" or "Programmable"
SM=0 or 1
Window scan select "Full" or "Window"
WS=0 or 1
If used
Window scan start
WY=0 to 1079 for CV-A20CL
WY=0 to 1078 for CV-A80CL
Window scan height
WH=1 to 1080 for CV-A20CL
WH=2 to 1080 for CV-A80CL
Shutter operation for Window mode (Continuous)
The electronic shutter is available together with Window scan, but it is effective only when the
preset shutter value (LVAL) is set at a value less than the Window height. If the shutter value is
larger than the window height (lines), the shutter is automatically set to OFF.
Important note:
When the Window scan read-out area is changed, the synchronous counter inside the image sensor
is automatically reset. Therefore, the first frame after changing the scan area will not have the
selected number of lines.
6.4.2.
Strobe-Preset Snapshot mode
When the trigger is input, the exposure starts at the leading edge of the trigger. When the Strobe-
Preset Snapshot trigger mode is selected the shutter is automatically set to OFF.
EXT TRIG
STROBE OUT
STROBE ENABLE DELAY TIME
)
Fig.19. Strobe output timing for Strobe-Preset Snap-Shot trigger mode
Setting Strobe Period by Read Begin (RB command)
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