7

5429B–IMAGE–04/05

[Preliminary] ATMOS -1M60/1M30

If shutter time is set to > 0:

Readout is suspended between two consecutive frame readout and shutter output signal is acti-

vated (programmable polarity) for a time configurable within 0 to Tsh range by step of T1.

Figure 4-2.

Free-run Mode and Shutter Chronogram

The maximum frame rate of 48 frame/s for the 1M60 camera (or 24 frame/s for the 1M30 cam-

era) is given in this mode with a shutter time set to 0.

See register Aperture Shutter Time @ 246H, Internal Register Mapping on page 17.

4.1.3

Triggered Mode

Principle: An external trigger starts the reset of the sensor, then snap and readout of a frame,

the integration time is defined by readout time (+ programmable shutter time, when used).

The trigger event initiates the following sequence:

• Stop of readout frame in progress and reset of readout pointer to line 1

• Readout of previous dummy frame and integration start of the frame N. The readout data of

previous frame is not forwarded on CameraLink interface (FVAL inactive)

• Shutter output signal is activated during a time programmable within 0 to Tsh range by step

of T1

• Readout of frame N. The readout data is forwarded to the CameraLink interface (FVAL

active) starting with the first line

• Readout of dummy frames (to prevent against large dark current integration) while the

camera waits for the next trigger event

Table 4-1.

Shutter Time Values at Free-run Mode

Label

Description

1M60

1M30

Tsh

Maximum shutter time (ms)

655

1310

T1

Step duration (µs)

10

20

Line 1

Integration

(Frame N)

Readout

and Reset

Line n

Integration

(Frame N)

Frame N

Programmable

Shutter Time

Shutter

Line n Readout

and Reset

Readout Time

Readout

Frame N - 1

Time

out

Line 1