6
Test Mode
DIP switch #4 on the SIM (see illustration on page 6) is the TEST DIP switch.
Switch it to the ON position using a ball-point pen or paper clip. This puts the trans-
mitter in Test Mode. An LED indicator light, located below the jack to the right of
the battery on the SIM, will flash each time the transmitter broadcasts a signal,
which should be every 2.5 seconds.
If the LED flashes only once and then remains dark, there is a problem with the ane-
mometer transmitter. See “Contacting Davis Instruments” on page 11.
If the LED flashes repeatedly but your console isn’t picking up a signal anywhere in
the room, it could be related to one of the following causes:
1. The DIP switches were not correctly set on the transmitter. Review the procedure
on page 4.
2. The ID was not correctly set on the console/receiver. Review the procedure on
page 5.
3. Reception is being disrupted by RF (radio frequency) interference. Interference
has to be very strong to prevent the console from receiving a signal while in the
same room as the anemometer transmitter!
4. There is a problem with the console/receiver. See “Contacting Davis Instru-
ments” on page 11.
Note: Remember to turn the Test DIP switch OFF when you’re finished testing wireless transmission.
If it is left ON, the blinking LED will reduce battery life significantly.
Choosing a Location for the Anemometer Transmitter
Keep the following factors in mind as you choose a location for your anemometer
and the transmitter shelter:
• Mount the anemometer at least 4' (1.2 m) above the roofline for accurate wind read-
ings. As shown in the ISS manual, the anemometer can be mounted on a pole or on a
vertical surface such as a wooden post. It comes with 40' (12 m) of cable to connect to
the transmitter shelter.
• Mount the transmitter shelter nearby, with the solar panel facing the sun. In the North-
ern Hemisphere, position the transmitter shelter with solar panel facing south, for
maximum sun exposure. (In the Southern Hemisphere, position the shelter with solar
panel facing north.)
• If you need to increase the distance between your anemometer and the transmitter
shelter, use extension cables #7876 from Davis Instruments. Please be aware that max-
imum wind speed reading decreases as the total length of cable from the anemometer
to the ISS increases. If this distance is greater than 240', maximum wind speed may be
less than 100 mph.
Note: Not all cables are compatible with your Vantage Pro system. To be sure they will work, order
extension cables from your dealer or directly from Davis Instruments.
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