Specifications
Camera interfaces
Bigeye Technical Manual V2.3.0
36
tinuous mode the cooling is switched off. This feature allows to reduce the
power consumption of the camera during standby. After re-enabling the IOD
mode a cooling time of approx. 4 – 5 minutes is needed.
After switching to image-on-demand mode a break of at least 635 ms has to
occur before the first image exposure can take place.
Input pin 9: open (or TTL high) continuous operation (cooling off)
GND (or TTL low) image-on-demand (cooling active)
Trigger input (pin 10, 11)
This input allows control of the electronic or electromechanical shutter by an
externally applied signal. It is necessary to switch the camera into image-on-
demand mode to enable direct exposure control.
The signal is level-sensitive, thus the HIGH duration directly dictates the expo-
sure time of the camera.
The current through the optocoupler (1) should be greater than 1 mA and not
exceed 20 mA:
5 - 2V (HIGH) Active exposure (only valid during IOD mode)
< 0.8 V (LOW) Inactive (falling edge starts frame output)
Note
For more information on image-on-demand mode: see Chapter
Mode setting on page 42.
Figure 11: Trigger input diagram