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A R D W A R E
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N S T A L L A T I O N
Optional Accessories
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O p t i o n a l A c c e s s o r i e s
The following optional accessories are designed for use with your Envoy. They
are available from your dealer or may be ordered directly from Davis.
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Telephone Modem Adapter (#6533)
Allows transmission of data from the data logger using a modem.
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Standard 4-Conductor 40’ Extension Cable (#7876-040)
For more flexibility in the placement of your Weather Envoy, add one 40’
(12 m) extension cable to extend the distance between your station and the
computer. (48’ (14.4 m) maximum)
H a r d w a r e I n s ta l l a t i o n
The Weather Envoy allows two types of installation: local connection to a
computer and remote connection to a computer via a modem. Requirements and
installation for each type of connection differ, and are explained separately below.
H a r d w a r e R e q u i r e m e n ts
Note: The amount of storage space necessary for the data files depends on the archive
interval. Each archive record in the database is 88 bytes. Every day in the database
has an additional two records totalling 176 bytes that store daily summary informa-
tion. A database containing data stored at a 30-minute archive interval requires
approximately 4400 bytes of disk space per day or 132KB of disk space per month.
The disk space requirements change in a linear fashion depending on the archive
interval. For example, data stored at a one-minute interval requires approximately 3.8
MB a month while data stored at a two-hour interval requires approximately 32 KB a
month.
Local Connection Windows Computer Requirements
Your Weather Envoy requires the following for a local Windows computer
connection:
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Computer running Windows™ 95, 98, 2000, XP, ME, or NT 4.0 with at least 5
MB of free disk space
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Windows-compatible display
VGA minimum. SVGA or High (16-bit) Color or better recommended.
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One free serial port
Local Connection Macintosh Computer Requirements
Your Weather Envoy requires the following for a local Macintosh computer
connection:
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Macintosh computer running Mac OS X v10.01 or newer with at least 5 MB of
free disk space
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A USB to serial port converter connected to a Macintosh USB port.
