Differences

This shows you the differences between two versions of the page.

--- lamp [2021/11/19 18:52] – mbrohart
+++ lamp [2021/11/19 18:59] (current) – mbrohart
@@ Line 8: / Line 8: @@
 ===== Standard Lamp =====
-One of the purpose of of the standard lamp is to determine the R6/R5 value which is used as part of the calculation to determine the total column ozone. This can be measured by running the **SL** command.
+The purpose of of the standard lamp is to determine instrument stability by monitoring the standard lamp ratios.  The double ratios (R6/R5) are used as part of the calculation to determine the total column ozone and SO2 measurements. This can be measured by running the **SL** command, taking about 9 min. to complete.
 For double spectrometer (MkIII) the standard lamp is also used to find the optimal position for the micrometer to get the highest intensity output. This can be done by running the command **HP**.