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參數(shù)資料
| 型號(hào)： | C7942CK-12 |
| 廠商： | Hamamatsu Photonics |
| 英文描述： | Acquire digital X-ray image in real time and 170 mm diagonal size |
| 中文描述： | 收購數(shù)字X射線實(shí)時(shí)圖像和170毫米對(duì)角線尺寸 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大小： | 146K |
| 代理商： | C7942CK-12 |
Flat panel sensor
C7942CK-12
3
(Typ.)
Unit
μs
ms
μs
Parameter
Symbol
Tvd
Tvc
Tvdpw
1
×
1 mode
390
470
770
2
×
2 mode
390
230
770
4
×
4 mode
390
117
770
Delay time (only external trigger mode)
Cycle time (internal trigger mode)
Dummy pulse width
Note: The numbers of siginificant figures is two. (except Tvc)
Vsync
I
Timing chart
To acquire images through an image grabber board, write parameters in the software program or parameter file by referring to
the following timing chart and description.
KACCC0362EB
Tvc (1 FRAME)
1st ROW
2nd ROW
Tvdpw
He
ENLARGED VIEW
DUMMY LINES
Phe
Pg
Phe
Phd
Phd
Phe
1st ROW
2nd ROW
1st ROW
2nd ROW
All pulses are counted in the
“
High
”
period of Hsync+
All pulses are counted at the riging edge of Pclk+.
The effective video output is only included in the
“
Phe
”
period.
LAST ROW
Vsync+ (GRABBER)
Vsync+ (GRABBER)
Hsync+ (GRABBER)
Hsync+ (GRABBER)
Pclk+ (GRABBER)
Pulse
2
×
2
1172
28
1120
80
1726
21
Parameter
1
×
1
2344
56
2240
160
526
21
4
×
4
586
14
560
40
2326
21
Effective line
Dummy line
Effective pixel
Dummy pixel
He
Phe
Phd
Pg
Note:
“
He
”
is the Hsync count. Phe, Phd and Pg are the Pclk count.
KACCC0363EB
RECOMMENDATION: 50 % OF FRAME TIME
FRAME TIME (Tvc to Tmax)
Tvd
Txray
Tvc - Tvdpw
ExtTrgLemo
ExtTrgGrb
(TTL)
Vsync+
(RS-422)
Hsync+, Pclk+ and Data 1-12 are the same as internal trigger mode.
·
Tmax is defined as the reciprocal of the minimum value of Sf (ext).
·
Txray = FRAME TIME - Tvd - (Tvc - Tvdpw)
I
External trigger mode
To acquire images in external trigger mode, input an external trigger pulse as shown below. When the time Tvd has passed after
the rising edge of the external trigger pulse, synchronous signals and video signals are output.
When used in synchronization with a pulsed X-ray source, X-rays should be irradiated during the Txray period.
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