DAVIS Short-Range Modem Pai User Manual
HORT
S
ODEM PAIR
M
The Short Range Modem Pair (simply referred to as the SR Modems in this
manual) allows you to transmit data from Davis’ WeatherLink® data loggers
(which are attached to a station console) over twisted-pair cable to a PC at a
distance of up to 7 miles (11 km).
-R
ANGE
CAUTION:
C
OMPONENTS
The SR Modem includes the components shown below. Please make sure that
you have all the listed components before continuing.
Note:
Please note that we have made every attempt to provide a safe product, but Davis
Instruments assumes no liability for any injury or damage caused directly or indirectly
by the installation or use of this product.
Not shown below is the hardware and manual supplied with the SR Modems. You will need
them to complete the installation, however.
SR M
ODEM COMPONENTS
Product #7875
22
19
OOLS AND MATERIALS NEEDED FOR INSTALLATION
T
In addition to the components listed above, you may need the following tools
and materials. Please be sure you have everything you need before beginning
the installation.
Rev. D (or later) WeatherLink Data Logger
✦
All GroWeatherLinks, Health WeatherLinks, and Energy WeatherLinks
use the Rev. D (or later) WeatherLink data logger. If you intend to attach
the SR Modem to Davis’ Perception
Wizard II-S
®
or W eather Monitor II
®
, Weather Wizard III
®
, you need to be sure that you have a
®
, Weather
Rev. D (or later) WeatherLink. Check the manufacturing code on the
underside of the WeatherLink; if it begins with the letter(s) L, LB, or LC,
contact Davis for information on swapping your W eatherLink for the latest version.
2-Twisted-Pair Cable
✦
You will need a length of 2-twisted-pair cable to run between the
SR Modems. Consult the table below to determine the maximum cable
run for either 22 or 19 AWG cables.
AWG
M
AXIMUM
C
ABLE
R
UN
4 Miles (6.4 km)
7 Miles (11 km)
✦
Small Screwdriver
✦
Wire Cutter
Wire Stripper or Knife
✦
L
ABELLING
Y
OUR
C
ABLES
Before beginning the installation, consult your WeatherLink user’s guide for
instructions on labeling the WeatherLink cables.
Page 2 Short-Range Modem Pair
NSTALLING
I
THE
HORT
S
R
ANGE
M
ODEM
P
AIR
The SR Modem needs to be installed in a protected location, such as the Complete System Shelter (Davis Product # 7724).
Typical Windows™-Based Computer Connection
The illustration below shows a typical SR Modem connection to a Windowsbased computer.
T
Typical Macintosh
W
YPICAL
®
Connection
INDOWS
-B
ASED
C
OMPUTER
C
ONNECTION
The illustration below shows a typical SR Modem connection to a Macintosh
computer.
T
YPICAL
M
ACINTOSH
C
ONNECTION
Installing the Short Range Modem Pair Page 3
Loading...