
3
Configuration
The WatchDog Modems are designed for use with the WatchDog 2000 Series Mini and Full Weather
Stations. If you are adding the modem to an existing station, the station microcontroller may need to
be upgraded to operate with the WatchDog modem.
You must configure your WatchDog 2000 Series Station to work with the WatchDog Modem. If you
are using the WatchDog Modem outside the United States, or sending data to an Internet location
other than SpecWeather.com, you will need to configure the Modem as well. Both processes are
easier to do at a desk in an office, compared to balancing a laptop computer in a field. You must have
SpecWare 9 Pro (or later) software installed on your computer in order to perform the configurations.
If you have not installed SpecWare, do so before continuing. Be sure to set key parameters, such as
the English/Metric option, and the communications port.
Configuring the WatchDog 2000 Series Station
Connect your station to the PC using the 6’ (2m) black direct-connect cable provided with SpecWare
software. Note: when the direct connect cable is inserted, the AUX port is disabled. Start SpecWare
Pro and start the WatchDog Manager (click the toolbar button, or the “WatchDog Manager” option in
the Logger menu). Select “<Direct Connect 2000 Series>” and click “Properties”. If requested, give
your station a name (or approve the default). When the WatchDog Properties screen displays, set the
configuration of your external sensors to match the ones you are using.
SpecWare allows you to specify both a logging interval and a data transmission interval. The “Data
Collection Interval” specifies how often data is logged to the internal memory of the station. This may
or may not match the frequency you will be transmitting current conditions to the Internet. Data saved
on the station can be retrieved at the station by using a WatchDog Data Shuttle or downloaded using
a PC with SpecWare.
The “Repeat- Transmit Interval” is used to specify how often your station will send current conditions
via the WatchDog Modem. If this does not appear on your Properties screen, contact Spectrum
Technologies to have the station firmware upgraded to support the modem.
The “Repeat-” “Format” allows you to specify the record format for the current conditions
transmissions. The following formats will be listed for a full-size WatchDog Weather Station:
• Format “1 Text” sends 128 bytes of text information at a time. This format is currently required for
use with SpecWeather.com.
• Formats “H Binary E” and “G Binary M” are shorter forms that compress the data into a 40 byte
record. The format you see will be based on your English/Metric setting in SpecWare. In general,
this is the format you should choose if you are building your own web site.
• Formats “J Short Bin E” and “I Short Bin M” are even shorter forms that compress the data into a
28 byte record by omitting the values for external sensor ports A-E. They are designed to fit in the
smallest Iridium packet to minimize satellite costs as much as possible. They should only be
used with a satellite modem, and where there are no external sensors (except in Port F,
which is used for the Solar Pyranometer on the 2900ET station).