2.4.5 Waveform or spectrum time
The amount of time required to get a waveform or spectrum varies significantly depending
on the network size, network topology, and other installed applications competing for
wireless bandwidth. Demand-based acquisitions use a special high-bandwidth mechanism
that can transfer a 4096-point waveform in less than 5 minutes in optimum conditions,
although it can take as much as 1 hour in fully loaded networks. Time-based acquisitions
run at a lower bandwidth and typically take at least 30 minutes to acquire the same
waveform.
Refer to the Data Import topics in AMS Machinery Manager Help for more details.
Energy Band trends
The transmitted thumbnail spectra, regardless of effective Fmax, also include Energy Band
parameters which cover the entire frequency range. The Energy Bands for a 1000 Hz
spectrum are:
• 0 Hz – 65 Hz
• 65 Hz – 300 Hz
• 300 Hz – 1000 Hz
The Energy Band parameters can only be trended in AMS Machinery Manager, and they are
trended in the same way as the other scalar parameters. The device does not publish these
values—requesting these wakes the device just like any other special data request.
Trend values are a good way to view on-demand data from your CSI 9420 powered by a
Smart Power Module because these trend values come from the Smart Wireless Gateway's
cache. Viewing on-demand trends does not cause the CSI 9420 to collect or transmit data
as on-demand spectra and waveforms do.
The maximum (fastest) recommended storage rate for the Energy Band parameters is
every 8 hours.
Refer to the Data Import topics in AMS Machinery Manager Help for more information.
Configuration
68 MHM-97408, Rev 15
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