Ametek LAND LSP HD Series - 6.3 Scan Line Separation and Data Storage; Scan Line Separation and Data Storage Requirements

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User Guide LSPHD Linescanner Head
Scan Line Separation = Product Speed m / ft
Scan Frequency
Whenyouhavedeterminedtherequiredscanfrequency,choosethescanratethat
eithercloselymatchesorexceedstherequiredrate.
Itisnotgoodpracticetosimplyselectthescanner'smaximumscanrateregardlessof
processrequirements.Thereasonsforthisareoutlinedbelow:
Parameter High Speed Low Speed
Scan line separation Closelyspaced Widelyspaced
Lateral resolution Lowerresolution Higher resolution
Diskspaceforlestorage Greaterspacerequired Less space required
Processor requirements Higher Lower
6.4 Data Storage Requirements
Dataisgeneratedatarateofapproximately2.5kBperscanline,withaminimum
requirementof440kBforleheaders.Therefore,atascanfrequencyof50Hz,each
oneminutemeasurementperiodwillrequire7.94MBofdatastoragespace.
LandscanWCAsoftwareallowsyoutoselectareducednumberoflinesforstorage(see
theLandscanWCASoftwareOnlineHelp).
Product speed m/s or ft/s
Scan line
Scan line separation
6.3 ScanLineSeparation