operation
211
Synrad Firestar f-Series operator’s manual
Caution
possible
equipment
damage
Do not ow coolant through the laser for an extended period of time
when the laser is shutdown. This causes condensation to form inside
the laser which may result in catastrophic damage to internal optics
and electronic circuits.
Initial start-up
4
Set your PWM controller to a frequency of 5 kHz at +5 VDC and ensure that the controller’s duty
cycle is set to zero percent output (0.0%).
5
Slowly increase the duty cycle of the square wave. The Lase indicator illuminates red when PWM
signal pulses are long enough to produce laser output (typically 7–10 µs at 5 kHz). The spot where
the beam hits the beam block increases in brightness, indicating an increasing power output.
6
Remove the PWM Command signal from the User I/O connector. The Lase indicator turns o.
7
Place Firestar’s Shutter Switch (if equipped) in the Closed position.
8
Shut o the chiller or otherwise stop coolant ow through the laser.
9
Shut o gas purge ow to the laser. In dirty or dusty environments; however, it may be necessary to
purge the laser continuously to prevent contamination of internal optics.
If your Firestar f-Series laser fails to lase, refer to Troubleshooting in the Maintenance/Troubleshooting
chapter for troubleshooting information.
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