ACPIspec30- Advanced Configuration & Power Interfacce Specification
Advanced ModHopper Installation and ConfigurationMeter setup and configuration • Advanced...
Transcript of Advanced ModHopper Installation and ConfigurationMeter setup and configuration • Advanced...
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Revised 4/2/2012
Advanced ModHopper
Installation and Configuration
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Agenda
• Remote diagnostics
• Meter configuration
• RTT and timeouts
• Setting up multiple RF channels
• Using high gain antennas
• Installation don'ts
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Diagnostics
• Link quality status, number of hops
– ModHopper advanced page
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Diagnostics (2)
• Tree display of connected devices
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Meter setup and configuration
• Advanced configuration page for ION 6200
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RTT and timeout setup
• Estimate 100 to 500 mS per hop
• RS 485 end node default timeout = 220 mS
• Timeout setting for Modbus master
• Effects of timeouts and hop counts on log data
timestamps
4/2/2012 www.obvius.com
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Using multiple RF channels
• Multiple systems operating independently in same
space
• Multiple comm segments as part of a larger network
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High gain antennas
• May be used, but with caution
• Higher gain may negatively impact routing tables
• Two types of high gain antennas
– Yagi
– Base or omni
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High gain antennas (2)
High gain antenna zones:
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Yagi and base radiation
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Other antenna issues
• Antenna cable losses
– LMR 195 loss per 100 ft = 11.1 dB (at 900 Mhz)
– 25 ft cable is ~ 3 dB loss (cuts power in half)
• External mounting
– Enclosure should be plastic, not metal
– Antenna can be located inside
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Hard wiring between ModHoppers
• Can be done, but should be avoided if at all possible
• If hardwiring is required:
– Set one ModHopper to “force master mode”
– Add longer timeouts
– Tree display will not be contiguous
– Master ModHopper will not show total link quality
accurately
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Installation don'ts
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Installation don'ts (2)
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Installation don'ts (3)
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Installation don'ts (4)
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