Campbell CRVW3, Руководство по эксплуатации продукта, Страница: 21 / 93

To determine whether your needs can be met with a simple radio network, consider the following
requirements:
l
The CRVW3 stations in the network should all have single-hop radio links to the base
station:
o
No repeater stations should be required.
o
A line-of-sight radio transmission path should exist between each CRVW3 and the
base station.
o
The distances between each CRVW3 and the base station should be conservative for
the radio option being used.
l
The base station location should have TCP/IP or internet connectivity sufficient to
communicate with the computer running
LoggerNet .
l
No measurements should be required at the base station location.
The term “single-hop” refers to the ability of a CRVW3 station to make a radio connection directly
with the base station without the need to route its radio communications through another radio-
enabled station (in other words, no repeating is required). Generally, simple radio networks
consist of 10 or fewer stations within distances that do not require repeaters.
NOTE:
If
Ethernet TCP/IP connectivity (wired) is available at the base station location, a network link
interfacing device, such as the Campbell Scientific NL201, is recommended (see
www.campbellsci.
eu
/nl201 ). In this manual, we provide instructions for using the NL201
device to connect the base radio to a TCP/IP network.
6.3 Software requirements
Periodically, check the Campbell Scientific website for software and CRVW3 operating system
(OS) updates: www.campbellsci.
eu
/downloads
See Updating the operating system (p. 72) for more information.
CRVW3 3-Channel Vibrating-Wire Data Logger 14