Latest modules set new benchmark for GNSS precision timing

06-01-2015 | Alpha Micro Components | Subs & Systems

M2M and IOT communications specialist, Alpha Micro Components now supplies
the U-blox NEO-M8T and LEA-M8T precision timing modules, ideal for
mission-critical infrastructure systems including mobile communication
networks, power generation, distribution systems and seismic measurements.

Highly compact, the surface-mount modules are able to generate a precise
reference clock with <20ns accuracy. The receivers offer high sensitivity
(-157dBm signal acquisition with assisted GNSS) to enable quick start-up,
even inside structures with limited sky-view. The precise reference clock is
derived from multi-GNSS (Global Navigation Satellite Systems) including GPS,
GLONASS, and BeiDou.

The LEA-M8T module is footprint compatible with existing LEA-5T/6T designs,
facilitating easy upgrade. The NEO-M8T is optimised for timing applications
requiring low power consumption and long battery life, such as geophones
used for seismic field measurements. The modules meet stringent requirements
for reliability, accuracy and low power consumption.

"These new modules are the industry's highest performance GNSS timing
modules in terms of accuracy, reliability and power consumption," said
Thomas Nigg, vice president of product marketing, U-blox.

The NEO and LEA-M8T modules are multi-GNSS, pin compatible successors to
U-blox' existing PPS timing modules and complements the previously announced
GNSS disciplined frequency reference module, LEA-M8F.

Measuring only 12.2mm x 16mm (NEO-M8T) and 17mm x 22.4mm (LEA-M8T), the
modules deliver high integrity and reliability with RAIM (Receiver
Autonomous Integrity Monitoring) and alarms, which are crucial features for
extremely reliable operation. Two time-pulse outputs are available,
configurable from once per minute up to 10MHz. The modules also output
multi-GNSS RAW data, including carrier phase, code phase and pseudo-ranges.

The modules can deliver time according to any international standard,
including calibration of interconstellation offsets. Survey-in and single
satellite timing features increase timing accuracy and timing availability
with as few as one single satellite in view. Support for low duty cycle
operation reduces power consumption for battery-powered applications which
results in cost savings as smaller batteries can be used.

Commenting on the NEO-M8T, Tim Bonnett, director and chief sales officer,
Alpha Micro Components, said: "The M8T timing modules are delivered in
u-blox' established LEA and NEO form-factors with standardised pin-out,
allowing ready migration from previous product generations. u-blox timing
products can make optional use of u-blox AssistNow or industry standard
aiding data. This reduces the time to first fix and delivers exceptional
acquisition sensitivity, even on first installation before precise location
or time is known."

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