Candela GentleYAG, Operator'S Manual

Page: 157 / 160

GentleYAG Laser System Candela Corporation
8501-00-1766 Revision F CONFIDENTIAL Page 157
CAL PORT (CP) CIRCUIT CAL (0-120J, 0-20J RANGES)
The Circuit CAL basically pulses the laser into an external meter and then into
the systems Cal Port at a low and high energy to calculate a slope and offset
difference between the two. There are three steps that are completed during the
0-120J Circuit CAL. First, the energy measurement circuit pregain (PreG) is
measured at a low energy, then a low point (LoPt) energy is measured, and
finally a high point (HiPt) energy is measured to allow for calculation of the
slope and offset. The 0-20 Circuit CAL uses the pregain from the 0-120J range
so only requires the LoPt and HiPt measurements.
11. Press the “ 0-120J ” button beneath the “ CP ” column for 1 second to begin
the CP circuit calibration procedure.
12. The screen will prompt the user (with Icons) when to pulse the laser into
the Ophir energy meter, when to enter the Ophir meter reading (using the
keypad), and when to pulse into the calport.
NOTE: Set the Ophir meter on the 30J range. After completing the LoPt,
change the Ophir meter to the 100J range.
13. On completion, the laser “dumps” (popping sound) the stored energy and
the screen displays “SUCCESSFUL CP CAL”
14. Press the “ 0-20J ” button beneath the “ CP ” column for 1 second to begin
the CP circuit calibration procedure.