NED
SUi7450T2
UME-0033-01
34
The video output phase is shown below.
無効
1
3698
3699
2
3
3700
無効
無効
無効
無効
無効
無効
無効
ＸＣｌｋ
（５０Ｍ）
ＤＶＡＬ
ＰｏｒｔＡ
ＬＶＡＬ
無効
7400
3703
3702
7399
7398
3701
無効
無効
無効
無効
無効
無効
無効
ＰｏｒｔＢ
３７００ＣＫ
３７０４ＣＫ
２ＣＫ
前半
後半
Figure 4-7-2 Video Output Phase
FVAL = 0 (low level) fixed
The first half of the pixels output (Port A) outputs the pixels in the order 1-3700. On the other
hand, the second half of the pixels output (Port B) outputs the pixels in reverse order 7400-3701.
The pixels need to be rearranged in the correct order by the frame grabber.
4.8
Exposure Mode and Timing Chart
The camera has two exposure modes. The overview of each mode and the timing are
as follows.
4.8.1 Free Run Exposure Mode
In free-run exposure mode, the camera generates its own internal control signal based
on two programmable parameters, exposure time and readout time. The range of
programmable exposure time and the timing chart of the exposure and the readout are
shown below.
Exposure
Readout
(LVAL)
(1)
(2)
(3)
(4)
(5)
r
exposure time
(1)
(2)
(3)
(4)
Figure 4-8-1-1 Free Run Exposure Mode
The scan cycle (Programmable setting) can be set in the range 80
µ
s
～
20.9715ms (4000
～
1048575CK
）
Scan Rate calculating formula Scan Rate
（
us
）＝
Clocks
ｘ
0.02
