____________________________________________________________________________ INDEX 
 
VAISALA _______________________________________________________________________ 171 
 
INDEX 
A 
Alarm status codes  74 
Alarms  117, 161 
Ambient light 
Measuring  57 
Assembling FS11  32 
Automatic mode  86 
B 
Background luminance sensor  57, 91 
Backscatter measurement  103, 118 
Backup battery  17, 22 
QBR101  109 
Base plate  32 
Battery  22, 107 
Baud rate 
Default  48 
Block diagrams 
FS11  102 
FSR102  106 
FST101  104 
C 
Cable glands  44 
Cable selection  25 
Communication cable  27 
Cables 
Communication  47 
Communication cable  27 
Connecting  44 
Grounding  23 
Lengths  27, 48 
Line power cable  25 
Power cable  45 
Calculations  111 
Calibration  127 
Backscatter measurement  125 
Check  128, 129, 130 
General  127 
Visibility  127 
Window contamination mesurement  125 
Calibration kit  127 
Checksum  72 
Cleaning  125, 128, 161, 162 
Command mode  63, 96 
Advanced level  97 
Closing  96 
Opening  96 
User level  97 
Commands 
Advanced level  67 
Automatic completion  70 
Command mode  63, 145 
Entering  63 
Polling  71 
User level  65 
Communication options  48 
Communications settings, default  48 
Configuration  90 
Optional sensor  91 
System  90 
Connecting cables  44 
Contamination compensation  119 
Contamination monitoring  118 
Controller board  107, 108 
CPU  107 
CRC16 Checksum  170 
D 
Data validity  123 
Day/night photo switch  91 
default  95 
Default settings  100 
DXL421  47, 52, 54 
E 
Earthing  23 
Electromagnetic compatibility  169 
EMC  169 
Error 
Log  123 
Reasons  117 
External maintenance line connector  56 
External options 
Powering  108 
F 
Factory settings  100 
FD12 emulation  72, 79