JAI AD-081GE - Manual (Page 41)

AD-081GE
40
OB period in the upper part of the frame 3L
Fast dump period for the upper part = (4+3+193 -1) ÷4 +1 = 49.75 + 1 = 50.75 → 51
Readout lines = 384 + 4 = 388
Fast dump period for the lower part = (768 - 576 + 3) ÷4 +2 ＝50.75 → 51
Total lines = 3＋51＋388＋50 + 4 ＝497
Frame rate = 23.768 ÷ 497 = 47.82 fps
10.3.10 Vertical Binning
The binning functions can be used to achieve higher frame rate or higher sensitivity. The
drawback is lower resolution.
Vertical binning is done by adding the charge from pixels in adjacent lines in the horizontal CCD
register. Fig.27 shows the vertical binning principle.
Fig.29 Conceptual drawing for vertical binning.
The AD-081GE has ON or OFF function for Vertical Binning:
Setting Resolution Frame rate
Off (no binning) 1024(h) x 768 (v) pixels 30 frames/sec.
2:1 binning 1024(h) x 384(v) pixels 49.30 frames /sec.
10.3.11 Electronic shutter
The AD-081GE has programmable exposure and the GenICam standard Exposure Time Abs.
◆
Programmable Exposure
Exposure time can be controlled in 1 L unit (42.07µs) from 0L to 792L. As the overhead of 0.5L
is added, the actual shutter time is from 0.5L to 791.5L in the range from 0L to 791L. 792L is
the shutter OFF. The actual shutter speed for each operation mode is shown below.
Mode Readout Minimum shutter speed Maximum shutter speed
Continuous
EPS, RCT Full, Partial 20µs at PE=0 (1/50,000) 1 Frame
V Binning 20µs at PE=0 (1/50,000)
PWC Full, Partial 42.07µs x 2L+20µs( 0.5L)=
104.14µs (approx. 1/9,600s) 60 Frames (2 seconds)
V Binning 50.96µs x 2L+ 30µs(0.5L)=
131.92µs (approx. 1/7,600s)
Note: In Pulse Width mode, the minimum trigger pulse width must be ≧2LVAL.
H
Xsg1
Video out
No V binning
V binning
H
Xsg1
Video out
No V binning
V binning
Horizontal Direction
V
e
rt
ic
al
D
ir
e
c
ti
o
n Full
Full
1/2
Binning
Frame rate 30.12 fps
Frame rate 50.18 fps