Davis Instruments 7855 User Manual

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FCC Part 15 Class B Registration Warning This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment on and off, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna

• Increase the separation between the equipment and receiver

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected

• Consult the dealer or an experienced radio/TV technician for help. Changes or modifications not expressly approved in writing by Davis Instruments may void the user’s authority to operate this equipment. EC EMC Compliance This product complies with the essential protection requirements of the EC EMC Directive 89/336/EC.

Product Number: 7855 Part Number: 7395.180 Rev. C May 15, 2008 WeatherLink WeatherLink, Weather Monitor II, Weather Wizard III, and Perception II are trademarks of Davis Instruments Corp. Hayes is a registered trademark of Hayes Microcomputer Products, Inc. Macintosh is a trademark of Ap-

for Weather Monitor II®, Weather Wizard III®, and Perception II®, Mac OS X Version

ple Computer corporation.

Welcome to WeatherLink!

Original

Weather Station

Data Logger

DIN Connector

Vantage Pro

Weather Station

Data Logger

Loopback Test

Connector

Welcome to Davis Instruments’ WeatherLink for Weather Wizard III, Monitor II, and Perception II for Macintosh OS X (# 7855). The Weatherlink software and data logger allow you to connect your Apple Macintosh computer running OS X to a Davis weather station so you can store, view, plot, analyze, export, print, and put on the Internet the weather data collected by your station.

Contents of Package

Before continuing, please make sure your WeatherLink package contains the following listed items:

• Data Logger for the original Davis Weather Stations: Wizard III, Monitor II, and Perception II. Includes 8’ (2.4 m) cable to link your station to your computer.

• 9-pin DIN connector

• WeatherLink software CD ROM

Required Accessories

You will need to install a third-party serial port adapter on your Macintosh computer in order to run WeatherLink for Mac OS X. The Keyspan USB Twin Serial adapter has been tested with WeatherLink, but other serial adapters should also work:

• USB-to-serial port adapter

Optional Accessories

The following optional accessories, designed for use with WeatherLink, are available from your dealer or may be ordered directly from Davis.

• Telephone Modem Adapter — Connects the data logger to a modem. Use the adapter # 7870 with Wizard III, Monitor II, and Perception II stations.

Hardware Installation

• Standard 4-Conductor Extension Cable — Use one 40’ (12 m) extension cable (#7876-040) to extend the distance between your station and the computer. (48’ (14.4 m) maximum)

Hardware Installation

You can connect a computer directly to your weather station using the WeatherLink data logger (local connection), or you can connect a computer to a remote weather station using a phone modem (remote connection). Requirements and installation for each type of connection differ, and are explained separately below.

Hardware Requirements

The hardware requirements for local and remote connections are listed below.

Local Connection Hardware Requirements

In addition to the provided hardware, the following are required for a direct connection.

• Macintosh computer running OS X v10.01 or newer with at least 5 MB of free disk space

The amount of space necessary for the data files depends on the archive interval. Database files containing data stored at a 30 minute archive interval require approximately 36K of disk space per month of data. The file size changes in a linear fashion depending on the archive interval. For example, data stored at a 1–minute interval requires approximately 1 MB/ month while the data stored at a 2–hour interval requires approximately 9K/month.

• A serial port adapter connected to a Macintosh USB port.

Remote Connection Hardware Requirements

In addition to the provided hardware and the computer equipment listed above, the following hardware is required for a phone modem connection.

• One external modem to connect to the data logger at the remote site.

• One internal or external modem connected to your Macintosh computer

• Modems must be Hayes

–compatible and able to send data at 1200 or 2400 baud for use with a Monitor II, Wizard II, or Perception II weather station.

• Telephone Modem Adapter — The Telephone Modem Adapter is specially wired to provide the connection between the data logger and the modem.

• Use a #7870 adapter with Wizard III, Monitor II, and Perception stations.

Connecting the Weather Station

Macintosh Computer

USB port

USB/Serial Port

Adapter

Din

Connector

40 feet (12 m)

4-conductor

Extension Cable

Coupler

Option

8 feet (2.5 m)

of cable

(standard)

Console

Base

WeatherLink

4 inches

(10 cm)

of cable

WeatherLink Jack

Underside

of instrument

Weather Station

Console

Typical Local Connection for Original Weather Stations

Connecting the Weather Station

The instructions below explain how to connect your Weather Monitor II, Weather Wizard III, or Perception II weather station directly to your computer. Note that if you extend the cable run beyond 48' (14.4 m), the software may have difficulty communicating with the station.

Local Connection

1. Make a note of the barometric pressure, total rainfall, and (if applicable)

2. Remove the mounting base from the console.

3. Remove all power from the console by removing the power adapter and

calibration numbers.

You must remove power from the weather station console to install the data logger. Removing power will cause these stored weather values to be erased. Use WeatherLink to re-enter these values, as well as the time and date, after restoring power to the console.

battery backup.

Failure to remove power before installing the data logger may cause damage to the data logger and/or console.

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