1.0ScopeThismethodisintendedtocoverallmechanical
dimensioninspectionstypicallyreferencedonaPrintedBoard
drawing.Thiswillcovernon-opticallyenhancedmeasurement
techniqueswhicharenotcoveredbyIPC-TM-650,Method
2.2.2.
2.0ApplicableDocuments
ANSINCSLZ540InternationalCalibrationStandardsor
PhysicalConstants
3.0TestSpecimensThetestspecimen(s)shallbedefined
intheapplicableperformancespecificationorstandard.
4.0ApparatusorMaterial
4.1Mechanicalmeasurementgagecapableofsufficient
accuracyprecisionandresolutiontoaccomplishtheneces-
sarymeasurement(i.e.,calipers,micrometers,pingages,
templates,etc.).
4.2Allmechanicalmeasurementgagesshallbecalibratedin
accordancewithANSINCSLZ540,InternationalCalibration
StandardsorPhysicalConstants.
5.0Procedure
5.1Gageswhichuseanoriginbasedsystem(i.e.,calipers,
micrometers)shallbeinitializedattheorigin.
5.2Operatethegageinamannerconsistenttoobtainthe
accuracy,repeatability,andprecisionrequired.
5.3Iftheattributetobemeasuredcanvaryacrossthe
printedboard,multiplemeasurementsmustbemadetochar-
acterizethevariationwithinthesampledarea(i.e.,holesizes,
thickness).
5.4Readandrecordthedimensionsfortheattribute(s)
measuredusingthesamenumberofsignificantdigitsspeci-
fiedbythedrawing,standard,orspecificationasaminimum
ormaximumlimitingvalue.
6.0Notes
Thefollowingitemscanaffectthetestresults.
Toolwear&maintenance
Environmenteffects
Delicacyofgages–properstorage
Impropercalibration
TheInstituteforInterconnectingandPackagingElectronicCircuits
2215SandersRoad?Northbrook,IL60062
IPC-TM-650
TESTMETHODSMANUAL
Number
2.2.1
Subject
MechanicalDimensionalVerification
Date
8/97
Revision
A
OriginatingTaskGroup
RigidBoardT.M.TaskGroup,7-11d
MaterialinthisTestMethodsManualwasvoluntarilyestablishedbyTechnicalCommitteesoftheIPC.Thismaterialisadvisoryonly
anditsuseoradaptationisentirelyvoluntary.IPCdisclaimsallliabilityofanykindastotheuse,application,oradaptationofthis
material.Usersarealsowhollyresponsibleforprotectingthemselvesagainstallclaimsorliabilitiesforpatentinfringement.
EquipmentreferencedisfortheconvenienceoftheuseranddoesnotimplyendorsementbytheIPC.
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