Campbell-scientific CS135 Lidar Ceilometer Manual do Utilizador descarregar pdf (Página 44)

CS135 Ceilometer

LINE 4

SSSSSSSSSSSSSSSSSSSSSSSSSSSSS........(2048 x 5 bytes) CR LF

The two-way attenuated normalised backscatter profile

(100000·srad·km)

-1

unless otherwise scaled by the Attenuated_SCALE parameter. Each sample is

coded with a 20-bit HEX ASCII character set; msb nibble and bit first, 2's complement.

The profile is not corrected for the tilt angle.

CR LF = Carriage Return + Line Feed

LINE 5

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

NOTE

1 2 ... 39 40 41 42 43 44 45 46 47 48 49 ... 69 70

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Campbell-scientific CS135 Lidar Ceilometer Manual do Utilizador Página 44