8.Features
© China Daheng Group, Inc. Beijing Image Vision Technology Branch 109
When switching from continuous mode to trigger mode, the trigger signal is blocked in the first
100ms after switching mode. Please make sure to send the trigger signal after 100ms. This is
only required for the MER-1520-13U3C(-L), MER-1070-14U3M/C(-L) and MER-1810-21U3C(-
L), not for all other models.
8.2.4. Continuous Mode and Configuration
Continuous mode configuration
The default value of
TriggerMode
is
OFF
in default user set. If the camera is opened with default user set,
the camera works in continuous mode directly. Otherwise, user can set
Trigger Mode OFF
to use
continuous mode.
Other parameters also can be changed in
Trigger Mode OFF
.
Continuous mode features
In continuous acquisition mode, the camera captures and transfers images according to camera parameter
settings.
In continuous mode, ROI size, bandwidth limitation and exposure time may have effects on
frame rate.
8.2.5. Software Trigger Acquisition and Configuration
Software trigger acquisition configuration
The camera supports software trigger acquisition mode. Three steps followed should be ensured.
1) Set the Trigger Mode to ON.
2) Set the Trigger Source to Software.
3) Send Software Trigger command.
All the software trigger commands are sent by the host through the USB3.0 bus, to trigger the camera to
acquire and transmit images.
Software trigger acquisition features
In software trigger acquisition mode, the camera begins to acquire one image after receiving software
trigger commands. In general, the number of frames is equal to the number of software trigger commands.
The relative features are illustrated below:
1) In software trigger acquisition mode, if the trigger frequency is lower than permissible maximal FPS
(Frame per Second) of the camera, the current frame rate is trigger frequency. If the trigger frequency
is higher than permissible maximal FPS (Frame per Second) of the camera, some software triggers
are ignored and the current frame rate is lower than trigger frequency.
2) The trigger delay feature can control the camera delay interval between your triggers and the camera
acquiring frames. The default value of trigger delay time is zero.
