Rainbow Electronics ATMOS™ 1M60 - Manual (Page 7)

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[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