DAVIS GroWeatherLink Software - Manual (Page 15)

H A R D W A R E I N S T A L L A T I O N
Phone Modem Connection
8
Phone Modem Installation Instructions
Before installing the WeatherLink for a phone modem connection, you need to
install and configure a modem for use with your computer (according to the
instructions supplied by the manufacturer). Make a note of the COM port and
IRQ used by the modem. You will need this information when entering serial port
settings for the station (see “Serial Port” on page 32).
1. If the station has been operating for some time and/or you have changed the default
settings, make a note of the barometric pressure, total rainfall, and (if applicable) cali-
bration numbers.
You must remove power from the station to install the WeatherLink, which
will cause these values to be erased.
Use the software to reenter these values
after restoring power to the station.
2. Remove the mounting base from the station and remove all power from the station by
removing the AC-power adapter and battery backup.
Failure to remove power to the weather station before installing the Weather-
Link may cause damage to the WeatherLink or station.
3. Insert the cable plug at the end of the short cable coming from the WeatherLink into
the jack marked C3 (To LINK) on the bottom of the console.
4. Insert the cable plug at the end of the long cable coming from the WeatherLink into the
jack marked L1 (To LINK) on the isolator unit.
5. Insert the cable plug at one end of the 40-foot WeatherLink cable into the jack
marked L2 (To PC) on the isolator unit. Use the cable plug on the end of the cable where
the L2 side of the cable label is closest to the cable’s end.
6. Insert the cable plug at the other end of the 40-foot WeatherLink cable into the jack
marked PC on the PHONE MODEM adapter. Use the cable plug on the end of the cable
where the PC side of the cable label is closest to the cable’s end.
This connection totals 48 feet (14.5 m) which is the maximum connection dis-
tance you may have without using Davis’ SRM.
7. Connect the PHONE MODEM adapter to the external modem.
8. Connect the external modem to an available phone jack.
9. Turn the modem on.
The modem must be on before you restore power to the weather station.
10. Restore power to the weather station by reattaching the power adapter and battery
backup.
The weather station should beep three times. The third beep, which should
occur within 30 seconds, indicates that the WeatherLink is operating correctly.
11. To identify which link revision you have, look at the label on the back of the Weather-
Link and write down the first two letters of the manufacturing code.
If the first two letters are “LD,” you have revision D. If the first two letters are
“LE,” you have revision E. The Rev. E WeatherLink has been enhanced for use
with radio connections.