Mikrotron MC13xx Spezifikationen PDF herunterladen (Seite 20)

Configuration MC13xx Users Manual Rev. 1.08

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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

> ... Range 001h ...3ffh

Response: none

Exposure time T

= r2 • T

-T

/ 2

... exposure time in s

r2 ... value of register 2

... time/line

= 1/F

sens

* 136 [s]

... Time/line

sens

... sensor clock

Typical exposure times:

Sensor clock

frequency (MHz)

Zeit/Zeile

(µsec)

bei 1/5.000 s

bei 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 Frame rate with asynchronous exposure

The frame rate with asynchronous exposure = Frame rate with synchronous exposure – (1 / exposure

time).

6.8.6 Asynchronous exposure, shutter control by pulse width

This operating mode is selected with register 6:

:r6[7..4] = 0xb

Exposure time depends on the width of the external EXP – signal.

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 49 50

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