Page 17 of 51
OptoFidelity Video Multimeter
– User Manual
By selecting
Control API
it is possible to control the device remotely via the USB
connection. Please refer to [1] for further information.
6
External trigger output option
Video Multimeter
can be used to trigger external devices by the External trigger output
option. The physical BNC connector in the side of the device receives a controlled
trigger pulse each time Video Multimeter detects a frame change.
6.1
Option license activation
The External trigger option is activated by copying a valid license file into the Video
Multimeter’s SD-card. The license file name is ‘camera_trigger.ini’, and it should be
copied into folder /frm/license/. The file contents is as follows (an example):
; OptoFidelity Video Multimeter license file
; Device serial number: 5
; Feature name: camera_trigger
[License]
salt = 1706318843
key = 2287536893
expire = 0
The device serial number must match the physical Video Multimeter device. License
files are generated by OptoFidelity only. License files should not be edited manually.
6.2
External trigger configuration
The External trigger feature is active when the corresponding application is started
from the main menu. The
Trigger camera on frames setup
screen shows the
parameters that can be controlled:
Figure 17: External trigger output control application.
