Mikrotron MC132x Spezifikationen PDF herunterladen (Seite 23)

Configuration MC132x Users Manual Rev. 0.23

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:

camera stop xxx0 x x

Synchronous without elec-

tronic shutter

0001 0 0

Synchronous with electronic

shutter

0011 0 0

Synchronous with electronic

shutter and external synchro-

nisation signal, positive edge

0011 0 1

Synchronous with electronic

shutter and external synchro-

nisation signal, negative edge

0011 1 1

Asynchronous, pulsewidth,

positive edge

1011 0 0

Asynchronous, pulsewidth,

negative edge

1011 1 0

Asynchronous, timer, positive

edge

1111 0 0

Asynchronous, timer, nega-

tive edge

1111 1 0

Table 6.7-1

6.7.2 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:

= 1/F

sens

• 136 [sec]

...time/line

sens

... Sensorclock

Frame rate: = 1 / (time/line • number of lines+1) or:

= F

sens

/ (136 • (r3[9..0] +2))

Dependencies between image size and frame rate for typical clock frequencies are given in the follow-

ing table:

image size

100x100 240x240 640x480 1280x1024

Sensorclock (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 6.7-2

6.7.3 Synchronous operation without shutter

Without electronic shutter the exposure time is 1 /

frame rate.

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 44 45

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