GentleLASE PRO Performance Test Procedure
WARNING – SHOCK HAZARD!!!
The high voltage capacitor in the GentleLASE PRO laser retains LETHAL voltages and must be safely discharged, before working near the laser head or inside the HV section for any reason. This procedure must be performed only by those technicians who are familiar with the precautions required when working with high voltage specific to the GL PRO laser system, and those who have been trained on the GL PRO laser system and its particular hazards.
Residual voltages require stick discharging if access to the head or high voltage sections are necessary. This must be done using the discharge stick located in the HV section. Discharge all 3 capacitor terminals for several seconds each. Verify that the capacitor is discharged below 25 VDC using a DVM and a high voltage probe.
WARNING – LASER LIGHT!!!
During this procedure it is possible that the laser may perform a bleeder pulse, emitting laser radiation. Therefore safety eyewear must be worn at all times during these procedures. The eyewear must have an optical density of ≥ 5.8 at 745 – 765 NM for the Alex Head.
PERFORMANCE TEST PROCEDURE:
- Put on safety eyewear and leave eyewear on throughout any part of this procedure when the laser system is turned on.
- Record all Performance Data in the following tables, in User Mode. NOTE: The aiming beam spot size must be between 1” and 1.5” diameter on the meter head to prevent possible damage to meter head.
- Turn laser “ON” wait for normal warm up to complete and remain in User Mode.
- Turn off DCD by setting Pre-spray to zero. Set repetition rate for 2 Hz, spot size and Fluence as requested for each table and calibrate for each Slider Attachment.
- The data in the following tests is displayed in the LVM screen, To enable “Ready” in all screens, press and hold the Tool button for MM keypad and enter the code FE6645. Notice a pop-up window that describes enabling “Ready” in all screens. Select OK and you will be able to pulse in the LVM screen and monitor statistics while you pulse. To disable this feature, access the MM keypad again and re-enter FE6645 to disable the “Ready” in all screens or turning off power will also disable Ready.
- Go to the LVM screen and press the reset so that N=0 in the statistics window.
- Set the Ophir meter to the lowest range possible for each energy level.
- Pulse 3 times into the Ophir and record the Ophir readings for each pulse, see the charts. From the LVM screen, record the Head average. Reset the statistics (verify N=0) before the next pulse.
- Insert the handpiece into the Calport and pulse 3 times (Single pulse, once every 3 seconds – no faster), and record the average of the three transmissions displayed in the LVM screen. (TX is transmission mean, or average). Perform the calculations. Be sure to record the proper sign (+ or -).
- All Calport errors must be less than ±5%. All Ophir energies must be within ±14% of required. If anything fails, it may be necessary to repeat the Internal Circuit Calibrations, Efficiency and Ramp test, and the Calport Calibration Verification in order to verify the Performance Test procedures are successful.
- Clear the statistics (N=0), and pulse into the Calport continuously for at least 30 pulses at 2 Hz. From the LVM screen, record the “3Si%” for the HD and the CP. These values must be ≤14%.