Image Acquisition with the AxioCam MRc5
56
B 48-0028 e 10.2003
Shutter Control
Via a supplementary cable the AxioCam MRc5 offers a TTL control pulse,
which can be used, for example, to control a mechanical shutter (e.g.
"Uniblitz") in synchronism with the camera’s exposure time.
As soon as this output is activated you can select the polarity that you want to
set for this signal:
Control Signal
:
High active
means that the
Control Signal
jumps from 0V to 5V when the
camera’s exposure begins and returns to 0V when exposure is complete.
Low active
means that the
Control Signal
jumps from 5V to 0V when the
camera’s exposure begins and returns to 5V when exposure is complete.
Please carry out configuration for this procedure in accordance with the
requirements of the device you have connected.
NOTE:
Simultaneous control of the external Uniblitz shutter by AxioVision via a
serial interface and by the shutter control of the camera is resulting in the
following behavior:
•
Shutter closed via AxioVision
→
than AxioCam MRc5 shutter control.
•
Shutter open via AxioVision
→
than AxioCam MRc5 shutter control
does not work.
Acquisition Delay
: Due to the inertia of the masses being moved, a
mechanical shutter requires a certain amount of time to change from the
closed to the open position after the control signal has been initialized.
To make sure that when the sensor is exposed it does not record this
transition state and is not thereby exposed unevenly it is possible to delay the
start of actual acquisition. Please set a value here in accordance with the data
for the device you have connected.
requirements of the device you have connected.
