User's Manual

Bridges Hardware Guide Silver Spring Networks 33
Glossary
best line-of-sight to meters. Normally, several me-
ters are associated with each Relay and several
Relays are associated with an Access Point. Meters
can also act as a Relay. See also reachability.
remote CHAP password See CHAP.
remote provisioning See remote service manage-
ment.
remote telemetry units (RTUs) A broad category of
electrical distribution devices including different
types of transformers, capacitor banks, reclosers/
circuit breakers, and many other device types.
route The route from an Access Point to a Relay or a
bridge, or to one or more meters. Routes can be
network discovered, static, or temporary. In the con-
text of DA, a network discovered route is deter-
mined automatically by the takeout point (an
eBridge or Access Point) when a new remote bridge
is set and it broadcasts a discovery message
across the network. A static route is a user-defined
route saved and used for all subsequent communi-
cations. A user-defined static route overrides all
network discovered routes. When performing an On
Demand ping, a user can specify a one-time route
to a destination that is not saved or re-used.
RF Radio Frequency.
RSSI Received Signal Strength Indicator. A way to
measure the strength of a received radio signal.
run A schedule run consists of the initial attempt and
all retries of all meters associated with the sched-
ule, plus the initial attempt and all retries of re-
queued meters.
S
sBridge A Silver Spring device that routes between
an RF interface, and two serial ports.
SCADA (Supervisory Control and Data
Acquisition) A computer system that super-
vises and controls the electric utility distribution and
transmission system. In recent years, SCADA has
become nearly synonymous with distribution auto-
mation.
secondary Access Point The next best performing,
most reliable Access Point as determined by the
endpoint device. See also primary Access Point.
set A device is set once it is physically installed and
connected to electricity. Sometimes, this is referred
to as energized.
Smart Grid Refers to technologies that enable a
highly communicative, predictive, and self-healing
utility grid.
SOAP Simple Object Access Protocol. A protocol for
exchanging XML-based messages over a computer
network. SOAP provides a basic messaging frame-
work for web services.
source select Corresponds to a measurement chan-
nel configured on an electricity meter. Each channel
measures a particular source, such as energy deliv-
ered in dWh.
source route A TCP routing construct, normally
termed a ‘Loose Source route,’ in which a distant
node establishes the best possible path, hop by
hop, through a complex network to its destination..
sparse deployment A range-limited deployment
where relatively few endpoints operate at minimum
signal strength. See also dense deployment and
spot deployment.
spot deployment Deployments to read a small num-
ber of relatively contained endpoints, such as in an
office park. See also dense deployment and sparse
deployment.
spectral inspection A spectrum analyzer can be
used to determine potential sources for out-of-band
interference.
standard tables Tables in electricity meters that con-
form to ANSI Standard C12.19.
standby facility A facility that supports a utility sys-
tem and is generally running under no-load. It is
available to replace or supplement a facility normal-
ly in service.
standby service Support service that is available as
needed to supplement a consumer, a utility system,
or to another utility if a schedule or an agreement
authorizes the transaction. The service is not regu-
larly used.
states The states that apply to devices in a Silver
Spring Network are of three types: CIS device
states, network states, and operational states.