Commercial and lndustrial MACH 10
®
Ultrasonic Meter Installation and Maintenance Guide 37
Appendix A: MACH 10
®
)R900i™
This appendix provides a general description of the MACH 10
®
)R900i™.
Product Description
The MACH 10
®
)R900i™ is manufactured by Neptune and is an integrated register that
contains both the MACH 10 meter and the R900
®
radio technologies in one register that
collects reading data. It then transmits the data for collection by the meter reader. A Neptune
walk-by, mobile, or R900
®
Gateway fixed network data collection system receives the data
and stores it to be downloaded into the utility billing system for processing.
The MACH 10)R900i is easily installed and operates within a Radio Frequency (RF) band,
which does not require an operating license. The MACH 10
®
)R900i™ meets FCC regulations
part 15.247 allowing higher output power and greater range. The MACH 10)R900i uses
frequency-hopping spread spectrum (FHSS) technology to avoid RF interference and
enhance security.
The transmitted data is updated at 15-minute intervals. It transmits a mobile message that
includes the meter reading data and the unique 10-digit MACH 10)R900i ID every 14 to 20
seconds. This allows the meter to be read by a hand held unit (HHU) or mobile data
collection unit. The MACH 10)R900i also transmits a high power fixed network message
every seven and one-half minutes on an interleaved basis to a fixed R900 Gateway.
The MACH 10)R900i is designed to offer advantages to utility organizations of all sizes:
l Increases meter reading accuracy.
l Eliminates reading difficulties.
l Protects utility liability by increasing meter reader safety.
l Requires no external wiring or programming.
l Provides enhanced eight-digit AMRmeter reading.
l Provides proactive customer service benefits (leak, tamper, and backflow detection).
MACH 10
®
)R900i™ Programming
The MACH 10)R900i is not field-programmable. Each MIU is given a unique 10-digit serial
number / identification number.
RF Protocol Error Detection
The RF protocol includes a header, data packet, and an error detection mechanism that
reduces the erroneous data.
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