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3. Press “Enter” to return to the measurement screen. If
you want this to be the default range, press “Save”
before pressing the Enter key.
6.4.2. Measuring Total Energy Exposure.
The Vega has the ability to sum the total energy of a
number of pulses over a given time period or number of
pulses. This gives the total energy "exposure" over that
time period. For example if the laser is pulsing at 30
times/sec at 1mJ per pulse and you measure the
exposure over 20 seconds then the total exposure is 30
x 1 x 20 = 600mJ
In order to measure exposure, do the following:
1. From the energy measurement screen, select “Menu”
and enter. Select “Exposure” and enter.
2. Setup the desired measurement parameters as
follows:
Timeout: Define the time period after which to stop
measuring exposure if the mode selected
is “After Timeout”
Pulses:
Define the number of pulses after which
to stop measuring exposure if the mode
selected is “After Pulses”
Mode:
Choose “AFTER TIMEOUT" if you want to
measure over a specific time period
Choose “AFTER PULSES” if you want to
measure a specified number of pulses.
Choose “MANUAL ONLY” if you want to
stop the measurement manually only.
(Note that you can also stop the
measurement manually in the other
modes as well).
