USER'S GUIDE____________________________________________________________________
138 _________________________________________________________________ M210482EN-D
N
No-break power supply 128
Noise cancellation 44
O
OPEN command 56
Operating principle 43
Operation modes
CONTINUOUS 55
STANDBY 55
Optical filter 131
Optical system 132
Optical termination hood 19, 96
Optional parts 19
Output interface 128
Overvoltage protection 128, 129, 130
P
Password 57
PC terminal cable 19
Performance 132
Pin connections 130
Polling mode 89
Polling string 89
Polling string format 62
Principle of operation 43
Pulse properties 131
R
Receiver 131
Recycling 14
Repetition rate 131
Resolution 44, 132
Return signal strength 45
S
SCALE 68
Serial lines 55
CLOSED 56
DATA 55
MAINTENANCE 55
OPEN 56
Service connection 96
SET command 42
Shock absorber 19
Sky condition 48, 80
Activation 49
Option code 48
STATUS command 70
Storage 93
SUM 68
Switch settings for normal operation 41
T
Termination box 19
Transmitter 131
Transportation 26
Troubleshooting
Alarms 100
Miscellaneous problems 101
Warnings 99
U
User commands 57
User-Programmable Parameters
Factory Defaults 42
V
Vertical visibility 46
Volume backscatter coefficient 45
W
Warning
Ceilometer engine board failure 99
Warning check 91
Warnings 99
Battery failure 99
Blower failure 99
Heater fault 99
High background radiance 99
Humidity sensor failure 99
Laser monitor failure 100
Receiver 100
Receiver optical cross-talk compensation
poor 99
Relative humidity > 85 % 99
Tilt angle > 45° 100
Transmitter expires 99
Window contamined 99
Wavelength 131
Wedge bolts 25
Window cleaning 92
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