Download Mikrotron MC13xx Specifications

Configuration
MC13xx Users Manual Rev. 1.19
6.8.1.2 Asynchronous exposure
With asynchronous exposure, an external signal starts exposure, and the exposed image is output immediately after the exposure ends. Exposure time is defined either by an internal timer or by the width of
the external EXP (CC1) signal. The time between two consecutive EXP (CC1) edges can be indefinite.
Frame rate = 1/(exposure time + image output time). Image output time equals the selected free running
frame rate. Use MC13xx camera configuration tool for selection.
The following registers select exposure type:
Register Bits
:r6[7..4]
camera stop
xxx0
Synchronous without elec0001
tronic shutter
Synchronous with electronic
0011
shutter
Synchronous with electronic
0011
shutter and external synchronisation signal, positive edge
Synchronous with electronic
0011
shutter and external synchronisation signal, negative edge
Asynchronous, pulsewidth,
1011
positive edge
Asynchronous, pulsewidth,
1011
negative edge
Asynchronous, timer, positive 1111
edge
Asynchronous, timer, nega1111
tive edge
Table 6.8-1
:r7[8]
x
0
:rf[0]
x
0
0
0
0
1
1
1
0
0
1
0
0
0
1
0
6.8.2 Frame rate with synchronous exposure
The frame rate with synchronous exposure is direct proportional to the selected number of lines.
The time for one line is:
Tzz = 1/Fsens • 136
[sec]
Tzz ...time/line
Fsens... Sensorclock
Frame rate:
= 1 / (time/line • number of lines+1) or:
= Fsens/ (136 • (r3[9..0] +2))
Dependencies between image size and frame rate for typical clock frequencies are given in the following table:
22