Transmit Radio Modes - Decagon Devices EM50 Operator's Manual

Em50 Series
The Transmit radio modes use less battery power because the radio
is off most of the time. The Em50R is designed to work approxi-
mately 12 months in Transmit mode.
Note: A DataStation is a receiver. It does not cause the remote
logger to send data. If your DataStation is powered off for some
time, itdoes not receive data sent by the remote loggers. However,
the logger stores the missing data for download.
6.1.1

Transmit Radio Modes

Use the Configure button in the Communication Hardware options
to choose one of the following radio modes that support Transmit
communication.
Confirmed Delivery Transmit: This is the recommended mode
since it is the most robust Transmit radio mode. The radio logger
adds a checksum to the data packet before broadcasting the data to
a DataStation. The logger then waits for the DataStation to confirm
it correctly received the data packet. If the logger does not hear the
confirmation, it retries sending the packet again. The logger stops
trying to transmit to a DataStation after 25 attempts.
Transmit Only: This is the original Transmit radio mode. It does
not offer the advantages of the Confirmed Delivery Transmit mode.
You should use the Confirmed Delivery mode when possible. Em5R
(discontinued) loggers only support this Transmit radio mode.
Transmit + two-way and CD Transmit + two-way: These
modes combine the two-way Radio mode and the Transmit Radio
mode. You could use these modes while configuring and testing your
radio network. You should not leave your radio logger in these modes
because they use the most battery power of all the radio modes. Us-
ing Transmit + two-way and CD Transmit + two-way radio modes
with the wake interval set to 1 or 2 causes your logger batteries to
drain very rapidly.
6 EM50R RADIO TELEMETRY
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