OPHIR vega User Manual page 20

(P/N 7Z08268) that helps reduce vibration on the
sensor.
2.5.5.1. To choose Energy or Average Power Measurement
1. To go from the main energy measurement screen to
power measurement, press "Power".
2. To go from the main power measurement screen to
energy measurement, press "Energy".
2.5.5.2. To use the Vega to measure Laser Energy and
Frequency
1. In measurement mode, verify that the units are mJ, µJ
etc. and "Energy" is displayed in the upper right
corner. If not, press the "Energy" key.
2. Select "Range" and press the Enter key. Use the
navigation keys to select the proper energy range.
The correct range is the lowest one that is larger than
the pulse energy measured. Press "Save" if you want
that range to be the startup default. Press "Exit".
3. If the sensor triggers from ambient vibration or noise
without a laser signal raise the threshold level as
follows: Select "Threshold", enter then using the
up/down buttons, raise the threshold until the false
triggering stops. If the sensor does not read the
pulses at all on the lowest range, try to lower the
threshold to minimum.
Warning:
While measuring pulsing lasers, erroneous energy
reading will result if energy range is not set up
correctly. See Section 6.4 for details
2.5.5.3. To measure Total Energy Exposure.
1. From the energy measurement screen select "Menu",
enter and select "Exposure".
2. Select the method of measurement with "Mode",
"Timeout" and "Pulses" then press "Start". Press
"Start" again. The Vega will start summing laser
energy exposure. To stop exposure measurement
before the chosen period, press" Stop".
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