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Wedge Optic - A wedge optic is required to check the power after the low energy attenuator.
Two samples are reflected off the wedge, both are used. An imaging mirror directs the sample
towards a pyrodetector mounted on the Optics Bench PCB. The pyro circuitry translates the
energy sample into a voltage proportional to the energy of the YAG pulse. The signals report-
ing back to the CPU PCB is MPREA and SPREA.
Service Attenuator - The service attenuator is inserted into the beam path to attenuate the
treatment beam before it is focused into the end of the fiber. It is operated by switch sw4 on
the Controller PCB inside the unit accessible to the servicing technician. The attenuation is
used during alignment procedures.
Safety Shutter - Blocks the treatment beam path when de-energized.
Aiming Beam Diode and Combiner Optic - A red (650 nm) aiming beam is provided by a diode laser
mounted in the optical head. The user can turn the aiming beam off or select high, low, or medium intensity.
The diode output is directed by a folding mirror to a beam combiner in the primary beam path. The combiner
and folding mirror are both adjustable to allow for placing the diode aiming beam coaxial with the treatment
beam.
Fiber Focus Lens - Focuses the beam into the fiber and to a beam diameter of approximately
260µm.
Blast Shield - Protects the Fiber Focus Lens from debris ejected from the proximal end of the
fiber during a fiber failure.
4.7 SOFTWARE
The software also provides non-treatment functions (for service personnel) after it detects an ON-to-OFF
transition of the service switch on the Controller PCB. It switches the LCD display from the user screen to the
service screen when it detects the transition. The LCD display goes back to the user screen when the system is
turned off and turned back on.
NOTE: No all faults are reported in service mode.
The following provides a summary structure of the system software in user mode as well as in service mode.
SYSTEM INITIALIZATION AND POWER UP:
The following describes the system initialilzation tasks performed by the VersaPulse PowerSuite system
software on the system power up. Upon power up, the VersaPulse PowerSuite software shall initialize and test
the following:
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