5.1.11 CRC-16 codes on terminal commands
If CRC-16 on mode is set using the
Terminal
command, all terminal commands need a CRC-16.
A semi-colon is used to indicate start of the CRC-16 in 4-byte character, for example
open
0;233A
. The CRC-16 is calculated either from the start of a new line or after a [STX] up to but
not including the semi-colon. ETX can follow the CRC-16 if required.
To find the valid CRC-16 for a command, type the command and then type: ;????. For example,
typing
open 0;????
gives the response [CRLF]CRC>233A<CRC[CRLF] so 233A is the CRC-16.
The CRC-16 is not case sensitive.
NOTE:
Make sure the terminal software sends [CR] and not [CRLF] for the command-line
termination.
The table below gives some commonly used CRC-16 codes.
Terminal command
CRC-16
open 0
233A
close
D94E
status
7CE5
password
EB85
terminal 0 (this command will
remove CRC-16 checking)
B576
defaults
7D8E
serial
7FCE
5.1.12 Service command
The service command triggers the SkyVUE 8M to go through a series of tests including tests that
require the white test surface (ceilometer calibration plate supplied) to be placed on the SkyVUE
8M windows.
The service command results in the following procedures:
l
System noise level including noise spike test
l
Detector maximum gain test
l
Simulates a clear night sky for calibration offset
l
Window contamination functionality test
l
Laser function and monitoring alarm check
SkyVUE™8M Tactical LIDAR Ceilometer
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