SKF On-line System WVT User Manual page 108

DataController and XML File Editor
Global Configuration (GlobalConfig)
• Select the SpectraDownload frequency for DataController to collect the FFT. This
interval must be greater than the data upload time to SKF @ptitude Analyst,
according to the Trace Data Collection Interval Guidelines table presented in the
previous section, Time Required for Trace Data to Be Available in SKF @ptitude
Analyst.
• Select the Time+SpectraDownload frequency (the options are identical to those
for SpectraDownload). This is the time waveform download frequency used by
DataController for time + FFT. This interval must be greater than the data upload
time to SKF @ptitude Analyst, according to the Trace Data Collection Interval
Guidelines table presented in the previous section, Time Required for Trace Data to
Be Available in SKF @ptitude Analyst.
IMPORTANT: Because the size of a time waveform is much larger than a
spectrum, Time+SpectraDownload should be scheduled less often than the spectra
frequency to conserve battery life. For example, data collection could be scheduled
as: collect trend every hour, spectra once a day and time waveform once a week.
7 - 16
Figure 7 - 18.
SpectraDownload Options.
 As mentioned previously, all of the intervals that are less than one
day are divided exactly over a 24 hour period.
SKF Multilog On-line System WVT
User Manual