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3. Fire the laser.
(For Holmium wavelength)
Test the output at all combinations of low, medium, and high pulse energies and repetition
rates. The delivered power must be within ±10% of indicated (requested) power.
(For Neodymium Wavelength)
Test the output in continuous exposure mode and at low, medium and high average powers.
The delivered power must be within ±10% of indicated (requested) power.
4. Remove the test fiber.
3.6.3 Flashlamp Performance Check
1. Check rod calibration values.
In order to verify that the system is properly aligned, perform the following:
• For Ho:YAG and Ho/Nd:YAG - Go to the second service screen and depress the PLOT CAL
button (this will take you to the ENERGY CALIBRATION PLOT screen, which is the fifth
service screen). Note the lamp energy for Holmium and lamp current for Neodymium val-
ues for each of the four channels. In lamp energy, it should achieve 3.5 Joules and in lamp
current, it should achieve 100 Watts.
• For Ho:YAG - If the 3.5 Joule lamp energy is greater than 160J, replace the lamp.
• For Nd:YAG - If the high point current is greater than 92A, replace the flashlamp.
• If the system has failed auto calibration or the YAG channel performance appears poor,
adjust cavity optics as necessary to lower values to acceptable levels and perform the YAG
Channel Adjustments in Topic 3.4. If necessary, re-lamp the cavity.
a. Fire the laser in user mode @ 5 Hz, 0.5J for 10 seconds and go the service mode.
b. Examine the graph in the fourth service screen.
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