Configuration MC13xx
Users Manual Rev. 1.19
23
image size
100x100 240x240 640x480 1280x1024
Senso rclock (MHz)
66
33
13,2
6,6
Time/line
[µs]
2,06 4,12 10,3 20,6
Frames/s 4.852
1.011
202
47
Table 6.8-2
6.8.3 Synchronous operation without shutter
Without electronic shutter the exposure time is 1 /
frame rate
.
6.8.4 Synchronous operation with shutter
In the sensor is implemented a freeze frame shutter, which allows to reduce the exposure time in steps
of one line. The minimum value of the exposure time is the duration of 2 line periods, which is deter-
mined by the value of r2 (min. 001h).
Command:
:r2<x
2
x
1
x
0
>
<x
2
x
1
x
0
>
... Range 001h ...3ffh
Response:
none
Exposure time T
B
:
Tt
B
= r2
•
T
ZZ
-T
ZZ
/ 2
T
B
... exposure time in s
B
r2
...
value
of
register
2
T
ZZ
... time/line
T
zz
= 1/F
sens
* 136
[s]
Tt
zz
... Time/line
F
sens
... sensor clock
Typical exposure times:
Sensor clock
frequency (MHz)
Time/line
(µsec)
r2
@ 1/5.000 s
r2
@ 1/10.000 s
66 2,06
97
49
33 4,12
49
24
13,2 10,3
19
10
6,6 20,6
10
5
Table 6.8-3
6.8.5 External synchronisation with synchronous exposure
MC13xx cameras can be synchronized to an external signal that is input on the EXP (CC1) signal. The
strobe output signal of a MC13xx “master camera” can be used for that purpose. The attached frame
grabber must provide the connection of an external input to the CC1 signal to the camera. The frame
grabber is initialized for a MC13xx in free running mode.
See timing diagram:
Synchronous exposure with external synchronisation via CC1
The cameras frame rate must be set to a frequency slightly higher than the maximum frequency of the
synchronization signal. The minimum frequency should be higher than 30Hz.