Chapter 7 ___________________________________________________________ Troubleshooting
VAISALA _______________________________________________________________________ 85
3.
Connect the maintenance terminal to the maintenance port at the
bottom of CL31. Turn on both CL31 and the maintenance
terminal. If you are using the palmtop or the CT-VIEW program
for the first time, make the necessary installations according to
the manuals of these products.
4.
Verify that the ceilometer starts proper operation. A quick status
check can be made by looking at the LEDs on the CLE311
board (refer to Figure 19 on page 99). After the initialization
routines, the
Laser on
LED should start blinking at 2-second
intervals. If all the key modules are ok, also all the six
diagnostic LEDs should light up.
5.
A blower check is also done during the first three minutes,
during which the blower is running. The automatic check also
verifies the functioning of the blower heater. The result of this
check is available three minutes after starting the unit and it is
indicated by the
CLB ok
LED. It is also displayed in the status
message.
6.
The status message can be obtained by typing the
open
command and pressing ENTER on the maintenance terminal
(PC) keyboard.
A CEILO > prompt should appear. Give the
get failure status
command and press ENTER.
An example of the response is as follows:
Alarms
Tmit Shutoff OK Transmitter ALRM
Receiver OK Voltages OK
Alignment OK Ext Memory OK
Light Pth Obs OK Rec Saturat OK
Coaxial Cable OK Engine OK
Warnings
Window Contam OK Battery Low OK
Transm Expire OK Humid High OK
Blower OK Humid Sensor OK
Int Heater OK High Rad OK
Engine OK Battery OK
Laser Monitor OK Receiver OK
Tilt Angle OK
System Status: FAIL
Suspect Module: CLT
The two last lines in the status message will indicate if there are
warnings or alarms present. The
Suspect module
line indicates
