Reserve i/o (pin 5, 9 and 14-15), Chapter, Reserve i/o – ALLIED Vision Technologies Bonito CL-400 200 fps User Manual
Page 28: Pin 5, 9 and 14-15), Note, This output is not recommended for new system, Designs
Camera interfaces
Bonito Technical Manual V2.3.0
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This is an open collector optocoupler output. The transistor is conductive
during the active exposure time of the image sensor. The optocoupler adds an
intrinsic delay to the signal.
The power dissipation through the optocoupler’s transistor must not exceed
150 mW.
A typical value for the external pull-up resistor is R = 4700
. This ensures risk-
free operation to the upper Vcc limit.
The start-of-exposure edge (falling edge at V
out
) is delayed for about 3 μs typi-
cally, the end-of-exposure edge for about 20 – 50 μs. The latter is mainly caused
by the storage time of the photo transistor and is strongly dependent on the
external pull-up resistor value R. To safely toggle the output between high and
low state use exposure times above 10 μs and also observe a gap of 50 μs or
more between two exposures. Faster rates may also work, but should be tested
individually. Consequently, in the default continuous mode (M=0) the output
does not toggle because the inter-exposure gap is too short.
Active exposure is also displayed by the L3 indicator at the camera’s back side.
Reserve I/O (pin 5, 9 and 14-15)
Note
This output is not recommended for new system designs.
Use the synchronization output feature instead: see chapter
Synchronization output (pin 6)
Note
The pins 5, 9, 14 and 15 are reserved for future use. Do not con-
nect. Currently they have no function, but this may change.