OPHIR vega User Manual page 72

"Save" was pressed will be default startup values, the
others will be saved until the instrument is turned off.
Note:
The BB type sensors have less variation with
wavelength, and in those sensors, fixed wavelength
ranges are selected similar to thermal sensors. This
section is not relevant with those sensors.
6.2.2. Setup of Laser Pulse Width and Pulses/Sample
6.2.2.1. Laser Pulse Width
As was mentioned before, the Ophir pyroelectric sensors
can measure long as well as short pulses. In order to
operate properly, the Vega must be set to a maximum
pulse width setting longer than the actual laser pulse
width. Therefore the pulse width should be set to the
shortest pulse width longer than the actual laser pulse
width. (Some sensors only have one pulse width setting
and measure all pulse lengths on this setting In that case
"N/A" will appear).
Warning:
If the pulse width is incorrectly set to a pulse width
shorter than the actual pulse width of the laser, the
reading will be erroneously low. If it is set to a setting
longer than necessary, the reading will be correct but
noisier.
To set up for pulse width, please do the following:
From the main measurement screen, press the 3
the left soft key. The choices of maximum pulse width
will appear. With the navigation keys, select the
smallest value larger than your actual laser pulse
width and press "save".
6.2.2.2. Setup for the Time Period to Average Over
The Vega has the ability to measure a number of pulses
and display the average value of the energy of the pulses.
This function is useful if the laser energy is not stable.
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