Vaisala WMS302 Betriebsanweisung PDF herunterladen (Seite 187)

Chapter 7 ___________________________________________________________ Troubleshooting

VAISALA______________________________________________________________________ 185

b. Check the output of the warnings and errors commands for

indication of the probable cause.

- Connect the terminal cable and start MAWS Terminal.

Type commands warnings and errors. For details, see

section Warnings and Errors on page 199.

- Pay also attention to the message related to the excitation

voltages. If the damaged sensor is powered by the logger,

it may cause an overload.

c. If the malfunctioning sensor is measured by the logger:

- Open the sensor calibration view in MAWS Terminal,

see section Determining Sensor Status on page 192.

- Check the sensor status and compare the value against the

sensor status list in Table 29 on page 195.

d. If the malfunctioning sensor is a so-called intelligent sensor,

for example, Vaisala Ceilometer or Vaisala Present Weather

Detector, use its own diagnostic features.

- Connect terminal cable and start MAWS Terminal.

- Service interface for the intelligent sensors can be

accessed through MAWS as explained in section

Opening Service Connection Through MAWS on page

190.

6. Communication is not working properly.

a. Whenever possible, use an external device to verify that the

communication infrastructure is working properly. For

example, use a cellular phone to verify that the signal strength

in the site is sufficient or that the SIM card in the MAWS

system has access to the network.

b. Troubleshoot the modems as instructed in section GSM

Modems.

c. If the communication device supports ASCII commands, for

example AT commands for modem, this command interface

can be accessed as explained in section Opening Service

Connection Through MAWS on page 190.

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Vaisala WMS302 Betriebsanweisung Seite 187