DQRID : D021105.4
Start DateStart TimeEnd DateEnd Time
04/17/1997000004/18/19971437
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Subject:
SGP/RL/C1 - Terminated cable affected data quality
DataStreams:sgprlC1.a0
Description:
> From an email message from John Goldsmith (SNL)


The site personnel had some alignment problems restarting the Raman
lidar after they stopped it yesterday (4/17) morning to clean the window.  
They finally got it running late in the afternoon, but they left a
terminated cable hanging from a second output on the Aerosol High amplifier
(used with a scope to find the beam when the alignment is way off).
Electronics can be picky; that cable screwed up the Aerosol High data,
filling the column with large numbers (~60,000); the other six columns are
fine.  The cable was removed at my request this morning; the first dataset
with good Aerosol High values is 71080842.DAT, #992 in the sequence, start
time 14:36:17 Z.
Suggestions: 
Measurements:sgprlC1.a0:
  • Number of photons counted in the low water vapor channel(water_counts_low)
  • Number of photons counted in the high nitrogen channel(nitrogen_counts_high)
  • Count rate in the high depolarization channel(depolarization_counts_high)
  • Number of photons counted in the high elastic (aerosol) channel(elastic_counts_high)
  • Count rate in the high water vapor channel(water_counts_high)
  • Number of photons counted in the low elastic (aerosol) channel(elastic_counts_low)
  • Number of photons counted in the low nitrogen channel(nitrogen_counts_low)
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