Campbell Scientific AL200 ALERT2 Encoder, Modulator, and Sensor Interface - Manual (Page 23)

Appendix A. Glossary
ALERT
Automated Local Evaluation in Real Time. A communication protocol
developed in the early 1970’s for the efficient reporting of real-time rainfall
data over radio telemetry networks.
ALERT2
Successor of the ALERT communication protocol. A layered protocol suite
designed for the primary purpose of real-time and coordinated communication
of data over a radio telemetry network.
IND
Intelligent Network Device. A device that implements the AirLink and MANT
protocols for the transmission, repeating, or receipt of ALERT2 data.
MANT
ALERT2 Network and Transport layer providing the required services to
transport application and network control data.
PDU
Protocol Data Unit. Data payload with control header used for exchange
between protocol layers. Sometimes generalized as “packet”.
SDC
Synchronous Device Communications. A Campbell Scientific addressable,
synchronous communications protocol. The protocol allows multiple
peripherals to be connected to the same communication bus as long as each
peripheral has a unique SDC address.
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