Campbell Scientific CS135 Lidar Ceilometer - Manual (Page 51)

User Guide
43
LINE 6
ETX CRC16 EOT CR LF
where
ETX = End-of-Text character
CRC16 (4 characters) = CRC16-CCITT Checksum
EOT
= End-of-Transmission character
CR LF
= Carriage Return + Line Feed
6.3 CL31 Messages
MESSAGES 101 - 106, (CL31 MESSAGE 1)
LINE 1
SOH CL ID OS 1 Samples ETX CR LF
where
SOH = Start-of-Heading character
CL = Always CL
ID = A single ASCII character, 0-9, a - z or A - Z, case sensitive. Default ID = 0
OS = Operating system, 100 ... 999
1 = Always 1
Samples = backscatter resolution and number of samples
1 = MESSAGE 101, 10 m x 770 samples, range 7700 m
2 = MESSAGE 102, 20 m x 385 samples, range 7700 m
3 = MESSAGE 103, 5 m x 1500 samples, range 7500 m
4 = MESSAGE 104, 5 m x 770 samples, range 3850 m
5 = MESSAGE 105, no backscatter profile
6 = MESSAGE 106, extended range, 5 m x 2048 samples, range 10,240 m
ETX = End-of-Text Character
CR LF
= Carriage Return + Line Feed