QL routine is used for performing UV calibrations on the Brewer Spectrometer. It is a test command that results in a UV scan being performed with a Lamp (rather than the sky) being the source of radiation.

The zenith prism is rotated to the UV dome, FW#2 is set to the “uv FW#2 Pos” recorded in the instrument constants file, FW#1 is set to the 3 position, the iris is opened, and the tracker is rotated to the sun (if the tracker is left powered during the test).
The operator is asked for lamp number, and lamp-diffuser separation (ECCC's Default setup uses 40cm), and the radiation intensity is measured in 1.5nm increments over the UVB range. Data is stored in a QLJJJYY.nnn file.

For more information, please refer to the UV SOP.

Note: Before using this section, please go through and understand how to perform the UV calibration via the UV SOP

1. Run the pre-calibration command string.
   For all instruments aside from MKIII:

   b1frhgsldtrsap

   For MKIII instruments only:

   frhphgsldtrsap

2. With the calibration lamp on, check and make sure the zenith offset is correct via

   zetutututupzze2

3. Run an RU or restart dosbox so it won't run out of string space in the middle.
4. Once the instrument is warmed up to temperature (Usually around 30c) run the uv calibration

   zehgb1qlhgzeb1qlhgsl

   or for MKIII instruments:

   zehphgb1qlhgzeb1qlhgsl

5. For subsequent bulbs you can run the following without waiting for the bulb warmup (wait time included)

   zew2hgb1qlhgzeb1qlhgsl

   For MKIII instruments:

   zew1hgb1qlhgzeb1qlhgsl