Delphin ProfiMessage - Page 288

ProfiMessage
Compression
Timesignalscanbecompressedpriortotransmission.Thiscanreducetrans-
missionspeedandincreasestoragecapacityinthedataloggermemory.Selectthe
requiredMethod:
l None
Thetimesignalistransmittedwithoutcompression
l Log.compression(µ-law)
Amplitudevaluesundergologarithmiccompression,wherebythecom-
pressionfactoris2:1.Theamplitudeerrorfollowingdecompressionis±2%
max.
l Deltacoding
Amplitudevaluesaretransmittedasabsolute(forminorchanges)orrelative
(asdifferences).Thecompressionfactorrangesbetween2:1and1:1.No
compression/decompressionloss.
l Minimum/maximum
valuesThetimesignalisreducedtothelocalmaximumorminimum.More
informationisavailableinthe"ApplicationsusingAMDT"manual(seesection
“Generatorair-gapmonitoring”).
FFT/Spectrum tab
288
Delphin Technology AG
Dezember 2015
ProfiMessage Manual