User's Manual

1608 4th Street Suite 200 Berkeley CA 94710| [e-mail] | P 510.548.4620 F 510.548.8264
1608 4th Street Suite 200 Berkeley CA 94710
|
[e-mail]
|
P 510.548.4620 F 510.548.8264
Functions / Features
Relay of radio communications
• To/from wireless sensors
• To/from access point
• To/from another repeater (FLEX or RP240)
Extension of range and coverage of the access
point
• Supports operating in two directions with one
repeater; its supported sensors communicate with the
access point
• Maximum single-hop range of ~2000 feet (610
meters) from supporting access point or repeater
• Maximum single-hop range of ~300 feet (91 meters)
from sensors with Long Range External Antenna
Fully wireless operation – no cable connections
Radio signal quality measurements (of each link to
wireless sensor)
• Receive Signal Strength Indicator (RSSI, in dBm)
• Link Quality Index (LQI, gure of merit 40-99)
Firmware upgrades over-the-air from access point
Simple installation
• Any roadside location that provides adequate signal
coverage to sensors and the access point or repeater
• No special requirements regarding setback, relative
angle of the sun or mounting stability
No calibration or adjustment required
FLEX-RP-B & FLEX-RP-B-LL Repeater
The Sensys Networks Repeater. In cases where installed
Sensys Networks wireless sensors are out of range of the
nearest access point, one or more Sensys Networks repeaters
can be used to provide a two-way relay between the out-of-
range sensors and the access point. A repeater is mounted
by the roadside on a pole or other structure. The repeater is
positioned so that both the sensors and the tandem repeater
or access point are within view and within range.
FLEX Repeaters are second generation repeaters from
Sensys Networks that provide antenna options that extends
the range of the repeaters and eliminates the need for
additional repeaters operating in tandem. The FLEX-RP-B
Repeater is powered with a replaceable battery pack located
within the unit; however the FLEX-RP-B-LL Repeater
does not have a replaceable battery. Both FLEX Repeaters
utilize enhanced RF chipsets and circuitry that improves RF
robustness and reduces energy consumption. FLEX Repeaters
have an internal antenna and connect with the FLEX External
Antenna.
Antenna Options. The FLEX External Antenna connects
to FLEX Repeaters via a coaxial cable. The antenna, which
works in conjunction with a repeater, allows the repeater to
be aimed in two directions simultaneously utilizing a pole
located between the sensor and access point.
Two types of FLEX External Antennas are supported: (i)
the FLEX-ANT-1 with the same RF coverage as the internal
antenna and (ii) the FLEX-ANT-2 with Long Range RF
coverage.
The FLEX family of repeaters work with the standard
repeaters RP240-BH and RP240-BH-LL.
FLEX Repeater Congurations
FLEX Repeater with Standard
External Antenna
FLEX Repeater with Long
Range External Antenna