User`s manual

Piranha4 4K and 2K Dual Line Monochrome CMOS Camera User's Manual 37
Teledyne DALSA 03-032-20176-02
exposure duration.
Timed
The exposure duration time is set using the Exposure Time feature and the
exposure starts with the Line Start event.
Exposure Time
Sets the exposure time (in microseconds). Exposure Mode feature must be
set to Timed
Exposure Modes in Detail
1. Internally Programmable Line rate and Internally Programmable Exposure Time (Default)
Line rate is the dominant factor when adjusting the line rate or exposure time. When setting the line rate,
exposure time will decrease, if necessary, to accommodate the new line rate. When adjusting the
exposure time the range is limited by the line rate.
Note: The camera will not set line periods shorter than the readout period.
GenICam parameters to set:
I / O Controls > Trigger Mode > Off
2. External Line Rate and External Exposure Time (Trigger Width)
In this mode, EXSYNC sets both the line period and the exposure time. The rising edge of EXSYNC marks
the beginning of the exposure and the falling edge initiates readout. Note:
GenICam parameters to set:
 I / O Controls > Trigger Mode > On
 Camera Control > Exposure Mode > Trigger Width
Warning! When running external line rate and external exposure time, the line rate must not exceed 1 /
(exposure time + 1 µs). Under these conditions the exposure time will become indeterminate and result in
image artefacts. This is not the case when running internal exposure control.
3. External Line Rate, Programmable Exposure Time
In this mode, the line rate is set externally with the falling edge of EXSYNC generating the rising edge of
a programmable exposure time.
GenICam parameters to set:
 I / O Controls > Trigger Mode > On
 Camera Control > Exposure Mode > Timed