Two-Way Best Practices; Radio Settings - Decagon Devices EM50 Operator's Manual

6 EM50R RADIO TELEMETRY Em50 Series
6.2.2

Two-Way Best Practices

Two-way modes is most useful when you have a small number (one,
two, or three) of remote radio loggers you wish to contact. If you
have three or more loggers installed within radio range of each other,
consider using one of the Transmit modes. The two-way modes also
allow you to mount an Rm-1 in your vehicle and interact with the
remote logger while in radio range.
See section on Connecting via a Radio Modem for step by step in-
structions for establishing a two-way connection with a remote radio
logger.
6.3

Radio Settings

For two radio devices to communicate they must share the same radio
settings. An Rm-1 radio modem can only connect to a remote radio
logger with the same radio settings. A DataStation only receives
data from loggers with the same radio settings as the DataStation.
Set the Radio Channel to the same value for all the devices on the
same network. Set the Radio Subchannel to the same value for all
the devices on the statement network.
Radio logger networks with different values set for the Radio Channel
use different frequency-hopping sequences, and therefore experience
minimal interference between groups. Radio logger networks with
the same Radio Channel value but different Radio subchannel values
can interfere with each other, but cannot communicate with each
other. This interference can also cause additional battery drain in
the radio logger.
The default values for Radio Channel and Subchannel are zero. Use
ECH20 Utility to choose other values.
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