HeadLogger.spt is used to log Th2 statistics. It is supplied by the Thermal II group.

The script performs the following actions:

1. Place a timestamp in the log file.
2. Set the laser to nominal current and record the nominal current in the log file.
3. Record the laser on time in the log file.
4. Set all lvd levels to zero and record the on power, off power and contrast ratio in the log file.
5. Balance the beam and record the on power, off power and contrast ratio in the log file.
6. Turn the laser off