JAI CV-M4+ Operation Manual page 10

Binning mode is a function where the signal charge from 2 or more adjacent pixels are added
together and read out as one pixel. A resulting full frame with lower spatial resolution can be
read out with a higher rate, and higher sensitivity. The CV-M4
pixel charge from 2 adjacent lines are added together in the horizontal ccd register. It is done
by double pulses to the vertical ccd register. Lowest shutter speed is 1/50. In binning mode H is
43.3 µ sec. Binning will only work for the monochrome cameras CV-M4
H H
No V binning No V binning
V binning V binning
Horizontal ccd register Horizontal ccd register
H synchronous or H a-synchronous shutter. In H synchronous trigger mode, the accumulation
will start at the first internal HD pulse after the trigger leading edge. In HD a-synchronous
trigger mode, the trigger leading edge will immediately reset the internal H timing and start the
accumulation.
In H synchronous trigger mode and H a-synchronous trigger mode a new trigger must not be
applied before the previous frame is read out.
H synchronous H synchronous
Trigger Trigger Trigger
Int. HD Int. HD Int. HD
Accum Accum Accum
Multiple exposure is a function which allows several exposures with a short interval. The
exposures are all placed in the same frame. This function is useful for studies of high speed
events.
The trigger leading edge will start the first exposure (edge pre select). When it is finished, the
resulting charge is read out in the stopped vertical ccd register. With additional trigger pulses on
the multi exposure input, new exposures can be done. The charge from each is added on top of
the first charge in the stopped vertical ccd register. Up to 6 exposures can be done with multi
exposure. The trigger trailing edge will start the vertical ccd registers, and the video signal will
be read out. Fig. 13 shows the timing details.
+ +
CV-M4 /M4
Xsg1 Xsg1
Video Video
out out
Fig. 11. Binning.
Fig. 12. H synchronous/a-synchronous trigger.
T R IG G E R
M U L T IP L E
E X P O S U R E
o p e n
S H U T T E R T IM E
(fixe d )
1
A C C U M U L A T IO N
C H A R G E IN
V -R E G
V ID E O O U T
Fig.13. Multiple exposure
+ +
CL, CV-M7 /M7
+
has vertical binning where the
Normal full scanning. Normal full scanning. Normal full scanning.
Aspect ratio correct Aspect ratio correct Aspect ratio correct
Trigger Trigger Trigger
Int. HD Int. HD Int. HD
Accum Accum Accum
> 1 H > 2 H
o p e n
o p e n
3
2
- 9 -
CL
+ +
and CV-M4 CL.
1380 pixels 1380 pixels 1380 pixels
1380 pixels 1380 pixels 1380 pixels
Vertical 2:1 binnig Vertical 2:1 binnig Vertical 2:1 binnig
Aspect ratio not correct Aspect ratio not correct Aspect ratio not correct
H a-synchronous H a-synchronous