Echelon Lumewave CRD 3000 Street Light Bridge - Manual (Page 123)

Street Light Bridge Integrator’s Guide 113
PLC
Power line carrier or power line communications.
Primary channels
A set of channels used to transmit on when the normal path is specified by
LTEP.
Primary receive channel
The channel a device listens to when awaiting an upstream message (for
example, response) on the normal path.
S
Secondary channels
A set of channels used to transmit on when the alternate path is specified by
LTEP.
Secondary receive channel
The channel a device listens to when awaiting an upstream message (for
example, response) on the alternate path.
SLB
CRD 3000 Street Light Bridge module.
SQI
Signal Quality Indicator – an abstract unit to indicate the (RF) signal quality.
SQI is obtained by watching “normal” RF packets, and by executing a
dedicated SQI measurement algorithm.
U
Upstream [RF] channel
The channel which a device listens to when waiting for an upstream message.
Upstream message
A message (for example, response) going from a target device back to the
Segment Controller.