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LT-200CL
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6.4.1 No-shutter mode with internal trigger
In this mode the camera does not accept an external trigger signal, as the line rate is
generated from an internal clock (user programmable, command LR). The exposure time
is directly proportional to the line rate . This mode is used when there is no external
trigger signal available, and the speed of the object is fixed or can be pre-determined.
The line rate can be varied from 32.9125μs to 16.844ms in 1 clock (12.5ns) steps. When
using this mode, a special function called “one-push auto line rate” is available. This
mode automatically maintains a constant output level by changing the line rate. See
chapter 7 (configuring the camera) for further details on this function. The line rate is
automatically adjusted in order to maintain sensitivity without reducing the S/N ratio.
To use this mode:
Set function
Trigger mode, No-shutter TR=0
Trigger origin, internal
TG=0
Line rate
LR=2633 to 1347584
(32.9125µs to 16.844ms in 12.5ns
increments)
Optional functions when using this mode:
One-push auto line rate
AR=0
Auto line rate reference
AL=0 to 1023
One-push white balance
WB
Important Note
The “one-push auto line rate” function is not recommended for continuous web
applications, as the speed of motion needs to be adjustable in order to maintain the
aspect ratio of the image.
Only gain based one-push white balance functions (WB) are available with this mode.
Fig.34 No-shutter / internal trigger mode
Содержание LT-200CL
Страница 28: ...LT 200CL 27 Fig 38 No shutter mode Binning External Fig 39 No shutter mode Sub sampling and Window External ...
Страница 34: ...LT 200CL 33 Fig 47 PWC mode Binning Fig 48 PWC mode Sub sampling and Window ...
Страница 64: ...LT 200CL 63 Change History Month Year Revision Changes May 2011 1 0 New release ...