DAVIS Wireless Repeaters for VP2 Manual de usuario descargar pdf (Pagina 19)

Rev A 7/28/06 25 - 19

However, if your background noise value is 10 or higher, force a resynch on the console and

move the repeater gradually closer to the weather station. When the background noise level on

the console diagnostics drops below 10, clear the diagnostic screen and leave the receiver at

this location for several minutes. Afterwards, read your RSSI, calculate your signal to noise

ratio and check your reception % again. If the numbers are acceptable here (S/N>=10,

%>=75%), then you will need to install the repeater here (closer to the weather station) rather

than where originally planned due to higher levels of RF interference than anticipated. You may

need to repeat this process several times to determine the correct installation location of this

repeater because RF interference can vary widely at any given location and over short

distances. If the background noise level is less than 30 and your reception % does not improve

before you reach the weather station, make sure you followed the guidelines for your layout

outlined earlier in this document. If you have, then you may have a problem with your repeater.

Consult the wireless repeater manual troubleshooting section to determine the problem and

course of action.

If you have only one repeater in the chain you are testing, then verify your receiver’s reception

diagnostics at the location where the receiver is to be located. If they are acceptable, then you

are done testing for that chain and you should turn OFF TEST mode on the repeater. If the

numbers are not acceptable, you may need to add a repeater to your chain.

If you have more repeaters, replicate the instructions above for the second repeater excepting

that you will set the next repeater to listen to the previous repeater.

TROUBLESHOOTING & MAINTENANCE HINTS

If you leave either a weather station or a repeater in Test mode, it will drain the battery rapidly.

So, when you are finished testing your network, be sure and turn off Test mode. Also, if you

leave Test mode on one or more repeaters, the RSSI number you see will be for the last

repeater in that chain that is in Test Mode.

If you believe your transmission success is less than optimal, check for any Low Battery

messages on any of the weather stations or repeaters. You may simply need to change the

batteries in one or more parts of your network. If no battery message is present, check your

reception diagnostics. If you are receiving less than 75% of the data packets after a few

minutes and your RSSI is 30 or less, then you may have a problem with one or more repeaters,

the weather station(s), or receiver. Repeat the steps in the “Testing Hints” section to determine

where in the network the problem lies. If each part of the network appears to be functioning

normally, but you still have poor reception, you may simply need more repeaters than originally

anticipated. This may be the result of increased RF interference or an increase in the number

and size of obstructions (construction and/or foliage growth) since the original installation.

If you ever receive a Low Battery message for any of the repeaters, you should change the

battery as soon as possible. The receiver can only process 4 Low Battery messages at a time,

so there may be more low batteries in your repeater network than it appears. If you find that

you have to change batteries often, make sure no repeaters are in Test mode. For solar

powered repeaters, be sure they are mounted in a location that receives direct sunlight most of

the day (avoid shaded locations) and face the solar panel south in the Northern Hemisphere

(north in the Southern Hemisphere). If these suggestions don’t remedy the situation, make sure

that the repeater with the low battery is able to receive all the stations and repeaters it is

intended to receive. This will be confirmed by seeing two flashing green lights while in Test

mode. Any other colors displayed indicate a problem with either reception or the repeater itself.

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DAVIS Wireless Repeaters for VP2 Manual de usuario Pagina 19

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