Mikrotron MC130x, Руководство пользователя, Страница: 32 / 68

Configuration MC130x Users Manual Rev. 2.1
Range of r6[3..0]: 0 ...9
Exposure time:
t
B
= 1/f
sclk
* 136* 2
(r6[3..0])
[s]
t
B
... exposure time in s
asynchronous operation
f
sclk
. sensor clock frequency
Example: Sensor clock = 66Mhz
r6[3..0] = 6
t
B
= (136
•
2
(6)
)/66 = 0,131 ms
6.7 Frame rates
Depending on camera mode and clock the frame rate is propor-
tional to the number of lines. See table 4.
Time for one line is:
t
zz
= 1/f
sclk
* 136 [Sec]
t
zz
...Time/line
f
sclk
... Sensor clock frequency
The following table shows the relationship between camera mode,
line length, frame rate and sensor clock frequency.
table 8
Camera mode 0 1 2 3
Frame size with r7[5]=1
(see
short vertical sync )
100x100 240x240 640x480 1280x1024
Sensor clock (MHz) 66 33 13.2 6.6
Time/line [µs] 2,47 4,12 10,3 20,6
Frames/s 4852 933 202 47
Camera modes, frame size and - rate
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