Soluciones y Tecnologías de Control Embebido S.A.P.I. de C.V.
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following figure in the Q-Switch configuration menu and change the “QS sync” line from “INT” to
“EXT”.
Fig. 32. Quantel laser Q-Switch menu, change timing from INT to EXT
By changing the Q-Switchd to EXT trigger the Quantel laser, we will allow the Q-switch to be
manipulated externally by our delay generator DG-3O1I-17.
Configure DG-3O1I-17 Delay Generator
It is recommended to configure the DG-3O1I-17 before connecting it to the commercial laser,
to avoid that any change in the outputs during configuration activates an unexpected laser shot,
with the risk that this implies.
DG-3O11-17 Input Configuration
The input of the DG-3O1I-17 will later be connected to the BNC connector of the Quantel
laser, which is the output of the flash lamp signal and may be marked as “Lamp OUT”
The retarder input can be configured with or without a pulse counter. If you activate the pulse
counter for n-input counts, then outputs B and C will activate only with the n-input pulse. If the
counter, the outputs B and C of the retarder will work with each of the input pulses.
The following figure shows the input configuration of the retarder to obtain a laser firing
frequency of 1 Hz, although internally the laser has its flash lamp activating at 20 Hz. That is, for
every 20 flash lamp firings, a Q-Sw activation will be obtained..
Fig. 33. Set the input menu with counter activated to get lower Q-Switch frequency
