Campbell NL241, Instruction Manual

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1
NL241 Wireless Network Link Interface
1. Introduction
The NL241 is a WLAN (wireless local area network) interface that allows
Campbell Scientific dataloggers and peripherals to communicate with a Wi-Fi
network. The NL241 can either join an existing network or create a network.
This WLAN interface can be connected to a datalogger CS I/O port or RS-232
port.
2. Precautions
• READ AND UNDERSTAND the Safety section at the front of this
manual.
•
The first time an NL241 is attached to a datalogger and bridge mode is
enabled, the datalogger memory has to be reorganized to allow room in
memory for the IP stack. To avoid the loss of data, collect your data
before enabling bridge mode . Note that once the NL241 is attached, it
can take up to 10 seconds for the datalogger to recognize it.
• This equipment generates, uses, and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. See Appendix E ,
Radio Frequency Emission
(p. E-1)
, for more information. Radio
installations should be performed by a professional. It is very important
that the transmit power level selected and the gain of the attached antenna
do not exceed the maximum allowed ERP permitted by local regulations.
Regulations vary by country and region. As the equipment owner, you are
responsible for making sure that your installation and maintenance of the
radio equipment ensure local regulations are met.
•
Device Configuration Utility ( DevConfig ) 2.15 or higher is required to
communicate with the NL241. The latest version of
DevConfig
can be
downloaded from our website at www.campbellsci.com/downloads .
•
The device driver for the NL241 must be installed on your computer
before you can connect to the NL241 via USB. To install the device driver,
verify you have the latest version of DevConfig (see previous bullet).
Under Device Type , select Network Peripheral | NL241 . Click the
Install USB Driver link and follow the prompts.
•
CR1000, CR3000, and CR800-series dataloggers require operating system
version 25 or higher in order to operate with the NL241 in bridge mode.
(OS version 25 or higher is not required to operate as a serial server or
PakBus router.) The latest operating systems can be downloaded at
www.campbellsci.com/downloads
.
• Ensure maximum protection against surges. Use coaxial surge protection.
Keep RS-232 and CS I/O connections short.
•
When downloading a new operating system to the NL241, do not remove
power until the LED stops rapidly blinking red and green.