Campbell Scientific CS135 Lidar Ceilometer - Manual (Page 39)

User Guide
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1 = One cloud base detected
2 = Two cloud bases detected
3 = Three cloud bases detected
4 = Four cloud bases detected
5 = Full obscuration determined but no cloud base detected
6 = Some obscuration detected but determined to be transparent
/ = Raw data input to algorithm missing or suspect
WA (1 character) = Warning or alarm status:
0 = No alarm or warning
W = Warning
A = Alarm
tr (3 characters) = Window transmission, %
h1 (5 characters) = 1st Height
If detection status is 1, 2, 3 or 4 h1 = Lowest cloud base reported
If detection status is 5 h1 =
Vertical visibility as calculated
If detection status is 0 or 6 h1 = "/////"
h2 (5 characters) = 2nd Height
If detection status is 2, 3 or 4 h2 = Second highest cloud base reported
If detection status is 5 h2 =
H ighest signal received
If detection status is 0, 1, or 6 h2 = "/////"
h3 (5 characters) = 3rd Height
If detection status is 3 or 4 h3 = Third highest cloud base reported
If detection status is 0, 1, 2, 5 or 6 h3 =
"/////"
h4 (5 characters) = 4th Height
If detection status is 4 h4 = Highest cloud base reported
If detection status is 0, 1, 2, 3 or 5 h4 = "/////"
flags (12 characters in 3 groups of 4, space separated) = Alarm or warning information
Description of the most significant alarm word (left side, bits going left to right). Each alarm word is a
hexadecimal sum of all the error bits.
Bit Description
8000 XXXX XXXX
Units. Feet = 0, metre = 1.
4000 XXXX XXXX Reserved for future use
2000 XXXX XXXX Reserved for future use
1000 XXXX XXXX Reserved for future use
0800 XXXX XXXX Reserved for future use
0400 XXXX XXXX Laser shut down due to operating temperature out of range
0200 XXXX XXXX The lead acid battery voltage is reading low
0100 XXXX XXXX Mains supply has failed (Required a PSU to be present)
0080 XXXX XXXX The external heater blower assembly temperature is out of bounds
0040 XXXX XXXX External heater blower failure
0020 XXXX XXXX The PSUs internal temperature is high
0010 XXXX XXXX PSU OS has failed its signature check
0008 XXXX XXXX No communications between DSP and PSU