5
CAMELIA 4M Digital Camera
5301C–IMAGE–03/04
External Trigger Timing Mode
The external TRIG signal allows the user to control the start of frame integration:
•
The rising edge of TRIG activates the start of frame integration. This rising edge is
synchronized by the camera with a precision of 112 µs.
•
The integration time is set by the RS-232 interface.
•
Note that the TRIG signal period must be greater than the sum of the integration
time and the frame readout time.
Figure 3. External Trigger Timing Diagram
Integration Time Control (ITC)
Timing Mode
The external ITC signal allows the user to fully control the frame integration:
•
The falling edge of ITC activates the start of frame integration. This falling edge is
synchronized by the camera with a precision of 112 µs.
•
The rising edge of ITC activates the stop of frame integration. This rising edge is
synchronized by the camera with a precision of 112 µs.
•
Note that the ITC signal period must be greater than the sum of the integration time
(defined by ITC low) and the frame readout time.
Figure 4. Integration Time Control Timing Diagram
Antiblooming by
Clocking
Antiblooming can be activated or inhibited (see “RS-232 Interface” on page 8):
•
Antiblooming OFF: antiblooming inhibited. Recommended if antiblooming is not
required for the application.
•
Antiblooming ON: antiblooming activated.
3
2048 pixels
Video lines
2
1
2048
2047
2046
Int. time set by RS-232
Frame
integration
Shutter
delay
Frame
readout
LEN
FEN
TRIG
Waiting
SHUTTER
3
2048 pixels
Video lines
2
1
2048
2047
2046
Frame
integration
Shutter
delay
Frame
readout
Waiting
LEN
SHUTTER
FEN
ITC
