6
EM50R RADIO TELEMETRY
Em50 Series
6
Em50R Radio Telemetry
This Section gives you a brief overview of the radio telemetry avail-
able in the ECH
2
O system. This information only applies to Em50R.
The ECH
2
O system supports two types of radio telemetry: “two-
way” mode and “Transmit” mode. Consider one or both types of
radio modes when designing your ECH
2
O telemetry system. The
“Confirm Delivery Transmit” mode ensures the most complete data
transfer and the best battery life. However, there are some unique
cases where you may want to use the other available modes.
Note: You need either a DataStation or an Rm-1 to utilize the radio
communication capabilities of the Em50R, .
ECH
2
O telemetry networks require each remote radio logger to have
a unique name. Each logger leaves the factory with the name set to
the logger unique serial number. You can easily change the name of
the logger to help you identify or organize your data. You should not
give two loggers the same name. Two loggers with the same name
interfere with each other when communicating over the radio.
6.1
Transmit Radio Telemetry
The Transmit Radio mode helps you create a simple network of re-
mote radio loggers all transmitting data to a DataStation radio base
station. The DataStation stores data from all the remote loggers
in one convenient place. Typically, you connect a DataStation to
your computer where you can easily download the data for use in
DataTrac 3. Unlike the two-way Radio modes, you cannot remotely
change logger settings when using this mode.
When a logger is in Transmit mode, it only turns on the radio when
it has new data to broadcast. For example, when you set the mea-
surement interval in your logger to 60 minutes, the logger stores your
data every hour and then broadcasts the data to a listening DataS-
tation. The actual transmit time is randomly delayed for several
minutes to prevent two or more radio loggers from interfering with
each other.
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