Ophir Optronics Ltd QSR Manuel D’Utilisation

1.  Select the average in seconds from the Average drop down list in the 

Graph Configuration Area. 

 

You can disable averaging from the Average drop down list. 

1.  Select None from the Average drop down list in the Graph Configuration 

Area. 

Laser wavelength and range are configured exactly as in power mode. This 
section describes the READY sign as well as the Energy Threshold setting, 
which are only available in energy mode. 

When the instrument is ready to measure a new pulse, 

 will appear in the 

Graph Configuration Area and flash on and off. The next pulse will 
automatically clear the screen, and the new value will be displayed. If you fire 
another pulse before READY appears, the reading may be inaccurate or may not 
be displayed. 

If the instrument is used in a noisy environment, or where high levels of 
background thermal radiation are present, the instrument may trigger spuriously 
on the noise or background radiation. It would then fail to measure the intended 
pulse. Since some degree of noise or background radiation is inevitable, the 
instrument is designed not to respond to pulses below a preset minimum level.  

The minimum energy threshold is typically set to 0.3% of the full scale of the 
selected range. If this level is too sensitive for your particular environment, you 
can alter it. Do not, however, raise the threshold higher than necessary, as this 
will cause degradation in the accuracy of pulse measurements, approximately 4 
times lower than the threshold level. Setting the energy threshold also enables 
you to detect the onset of a pulse.