10. Troubleshooting
This section covers some common problems that might be encountered when using the NL241.
This is not comprehensive but should provide some insight and ability to correct simple errors
without a call to Campbell Scientific technical support.
When your Campbell Scientific software cannot establish a link to a remote data logger that is
connected to the NL241, do the following:
1. Check all the power connections.
Your NL241 and any wireless access point (WAP) and/or wireless router being used must be
connected to power. Check power indicator lights to make sure your devices are powered.
2. Check all cables and antenna.
Verify that the antenna is securely attached to the NL241 and oriented in the same
direction as the antenna of your WAP. The Link/Act LED on the NL241 should start flashing
when it is connected to a network. Also, the WLAN activity light on your WAP (if it has one)
should flash with activity as well.
3. Power cycle the NL241 and your WAP/hub/router/computer.
Turn off or unplug your WAP/hub/router/computer and NL241. Wait 10 seconds and then
plug them back in or turn them on. A full restart may take 30 to 60 seconds.
4. Check the settings of the NL241.
a. Make sure the correct SSID and password (if needed) have been entered for your
network.
b. Make sure the NL241 is connected to the right WLAN (Wi-Fi Status in
Device
Configuration Utility
or show > Wi-Fi settings > Wi-Fi in a Telnet session).
c. Make sure the wireless network you are connecting to has a RSSI level of greater than
(>) –90dBm (in
Device Configuration Utility
, Settings Editor > Wi-Fi > Wireless
Networks in Area).
NL241 Wireless Network Link Interface
39
