[Preliminary] ATMOS -2M60/2M30
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.
Table 4-1.
Label
Tsh
T1
Shutter Time Values at Free-run Mode
Description
Maximum shutter time (ms)
Step duration (µs)
2M60
655
10
2M30
1310
20
Figure 4-2.
Free-run Mode and Shutter Chronogram
Line 1 Readout
and Reset
Line 1
Integration
(Frame N)
Line n Readout
and Reset
Line n
Integration
(Frame N)
Frame N - 1
Readout Time
Frame N
Readout Time
Shutter out
Programmable
Shutter Time
The maximum frame rate of 48 frame/s for the 2M60 camera (or 24 frame/s for the 2M30 cam-
era) is given in this mode with a shutter time set to 0.
See register Aperture Shutter Time @ 246H, Internal Register Mapping on
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 Camera Link interface (FVAL inactive)
• Shutter output signal is activated during a time programmable within 0 to Tsh range by step
of T1
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5440A–IMAGE–10/05
ATMEL [ ATMEL CORPORATION ]
