Campbell Scientific CS135 Lidar Ceilometer - Manual (Page 60)

CS135 Ceilometer
52
6.4 CT25K Messages
MESSAGE 113, CT25K Data Message No. 1
LINE 1
SOH CT ID OS 10 ETX CR LF
where
SOH = Start-of-Heading character
CT = Always CT
ID (1 character) = Unit number 0 ... 9, A ... Z (capitals only) Default ID = 0
OS (2 characters) = Operating system 00 ... 99
1 = Always = '1'
0 = Always = '0'.
ETX = End-of-Text Character
CR LF
= Carriage Return + Line Feed
LINE 2
S WA9h1
9
h2
9
h39flags CR LF
where
S (1 character) = message status:
0 = No significant backscatter
1 = One cloud base detected
2 = Two cloud bases detected
3 = Three cloud bases detected
4 = Full obscuration determined but no cloud base detected
5 = 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
h1 (5 characters) = 1st Height
If detection status is 1, 2 or 3 h1 = Lowest cloud base reported