laser calibration issue

[lemorgan]

I think I'm having trouble with the laser (calibration?) again. I ran a sample yesterday and got the 'invalid laser calib' warning, and then blank levels of gas. I was doing fine with fusions but this is a step heat. log file and screenshot attached. any suggestions? I'm trying to run at 0.8W.

laser calib file:

[PowerOutput]
coefficients = -0.0018,0.6489,0.9313

3051-01B-001.log

[jirhiker]

given those coefficients for power calibration the minimum requested power is 0.9313.

Watts = -0.0018*x^2+0.6489*x+0.9313

where x is % laser output. If you request 0.8W then there is no value between 0-100 that satisfies the calibration equation.

[lemorgan]

Good point. I've now reset the calibration file to have the 0.9313 value set to 0.2. Hopefully that will let us run at lower values. Will know more in a few hours...

[lemorgan]

This seems to have worked - we have gas above blank level after extraction at 0.5W!