Campbell Scientific CS135 Lidar Ceilometer - Manual (Page 53)

User Guide
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Description of the most significant alarm word (left word, bits going left to right)
Bit Description
8000 XXXX XXXX
Transmitter shut-off
4000 XXXX XXXX Transmitter failure
2000 XXXX XXXX Receiver failure
1000 XXXX XXXX Reserved for future use
0800 XXXX XXXX Reserved for future use
0400 XXXX XXXX Memory error
0200 XXXX XXXX Light path obstruction
0100 XXXX XXXX Receiver saturation
0080 XXXX XXXX Reserved for future use
0040 XXXX XXXX Reserved for future use
0020 XXXX XXXX Reserved for future use
0010 XXXX XXXX Reserved for future use
0008 XXXX XXXX Reserved for future use
0004 XXXX XXXX Reserved for future use
0002 XXXX XXXX Reserved for future use
0001 XXXX XXXX Ceilometer engine board failure
Description of the middle alarm word (middle word, bits going left to right)
Bit Description
XXXX 8000 XXXX
Window contamination
XXXX 4000 XXXX Battery voltage low
XXXX 2000 XXXX Transmitter expires
XXXX 1000 XXXX High humidity
XXXX 0800 XXXX Reserved for future use
XXXX 0400 XXXX Blower failure
XXXX 0200 XXXX Reserved for future use
XXXX 0100 XXXX Humidity sensor failure
XXXX 0080 XXXX Heater fault
XXXX 0040 XXXX High background radiance
XXXX 0020 XXXX Ceilometer engine board failure
XXXX 0010 XXXX Reserved for future use
XXXX 0008 XXXX Laser monitor failure
XXXX 0004 XXXX Receiver warning
XXXX 0002 XXXX Tilt beyond limit set by user, default 45 degrees
XXXX 0001 XXXX Reserved for future use
Description of the least significant alarm word (right word, bits going left to right)
Bit Description
XXXX XXXX 8000
Blower is on
XXXX XXXX 4000 Blower heater is on
XXXX XXXX 2000 Internal heater is on
XXXX XXXX 1000 Working from battery
XXXX XXXX 0800 Reserved for future use
XXXX XXXX 0400 Self test in progress
XXXX XXXX 0200 Reserved for future use
XXXX XXXX 0100 Reserved for future use
XXXX XXXX 0080 Units are metres if on, else feet
XXXX XXXX 0040 Reserved for future use
XXXX XXXX 0020 Polling mode is on
XXXX XXXX 0010 Reserved for future use
XXXX XXXX 0008 Reserved for future use
XXXX XXXX 0004 Reserved for future use
XXXX XXXX 0002 Reserved for future use
XXXX XXXX 0001 Reserved for future use