Dalsa 1M28-SA, User Manual

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1M28 and 1M75 User’s Manual PRELIMINARY 27
DALSA 03-32-00525-03
Figure 18: Triggered Mode with External Edge Triggered Exposure Control
CPRE
Line Pause
First Line Line Pause
Last Line Line Pause
EXSYNC is ignored in mode constant image data rate
PCLK
EXSYNC
FVAL
LVAL
DATA
PRIN
INTEGRATION
2.10 Dummy Test Row
For testing the readout chain a row of test pixels has been implemented on the sensor
chip. The pixels in this row are fixed to a pattern of black and white pixels. This row can
be read out in place of row 1023, at the beginning of the frame. Note: The camera powers
up with the dummy test row turned off. For information on turning the dummy test row
on , refer to Table 14 on page 37.
2.11 LED Status
A status LED on the backside of the camera provides the following information about the
state of the camera:
• In normal operation mode, the LED shows a green light while valid data is read out.
• At slow frame rates the LED blinks with the FVAL signal.
• At high frame rates the LED changes to an apparently continuous green light, with
intensity proportional to the ratio of readout time over frame time. In some
circumstances, (for example, a relatively long frame time and a very small ROI
setting) the pulse of the LED might be too short to be visible in daylight conditions,
even if the camera is working properly.
• If the data read out from the sensor is not within the ADC conversion range (over or
under exposed), the LED changes to red while the saturated data is read out.
• The status LED changes to red while the serial communication is active.