6.5 Troubleshooting QML Data Logger
• Maintenance cable and a laptop computer with the applicable versions of the setup
files and AWS Client
• Keys for the enclosures
• Multimeter
• Slothead screwdrivers, especially small ones
• Crosshead screwdrivers, especially small ones
• Wrenches or adjustable wrench
• Allen keys
• Applicable spare parts (for example, a new QML data logger)
• Safety helmet when tilting the mast
6.5.1 Determining QML Data Logger Operation Mode
To determine the operation mode, check the status LED. The LED is visible through the cover
of the QML data logger.
Table 27 QML Data Logger LED
LED Operation Mode Notes
Flashes all the time QML data logger has been reset
but setup has not been examined
yet.
–
Flashes once every 5 seconds Setup is running without errors. –
Flashes once every 10 seconds Setup is interrupted due to an
error.
A communication module is
missing or there is no script in the
\cfg directory.
Flashes quickly 2 times in a row Setup is running but there are
warnings.
The interval is 5 or 10 seconds,
depending on if the script is
running or not.
Flashes quickly 3 times in a row,
then at 5‑second intervals
Setup is running but there are
errors.
The interval is 5 or 10 seconds,
depending on if the script is
running or not.
LED is not on None Either there is no power in the QML
data logger or there is a device
failure. Check the power supply.
6.5.2 Checking Hardware
1. Open the enclosure and check that all the equipment is present.
2. Check that the QML data logger, power supply, and communication devices are
connected properly.
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