MacFinish 2D-USB Handleiding

MacFinish 2D-USB and MF8.x software Page 55
Hoofdstuk 7.4 : Testing the Starting System
The test can be performed when the starter makes use of a starting pistol, on which we attach an electronic start detector.
The test is merely meant to verify whether the 'start detection' timing is functioning well. It should be executed before
the start of an important (international) meet or championship.
The starter should put the barrel of the pistol on top of the finish line, and fire the gun.
Before that shot the MacFinish operator should click the 'Ready' button in the 'Actions' window, and continuously press
the “F7” function key (and function keys should be enabled) until he hears the starting shot. That way the camera
will take an image of the flash from the starting pistol.
start detector
finish-line
flash from the gun on top
of the finish-line.
As soon as the sensor(s) inside the start detector register the explosion, time will start running within 0.5 microseconds
after the starting shot. This should coincide with the camera registration of the flash from the starting pistol:
Picture of the flash from the
gun on the finish-line.
First vertical marker at
0.01 = one hundred of a
second after the
starting shot
0.1 = one tenth of a
second after the starting
shot.
Test OK; time
started running
immediately
after the shot
had been fired.
This time bar below the
image can be made
visible (on paper) by
selecting Print Window.
As you can see from the picture taken, a number of lines before and after the starting shot are recorded.
Note; Be sure that the starter or any other person or object is not hiding the flash of the pistol for the camera.