SincethefirsteditiontherehavebeenmanychangesintheequipmentavailableformeasurementsandthegrowinginterestinTransmissionErrormeasurementhasspawnednumerousapproachesthatarenotalwaysclearlydescribed.Eachauthorhasatendencytoextollthevirtuesofhisapproachbutrarelypointsoutthecorrespondingdisadvantages,soIhaveattemptedtocomparesystems.Arangeofnewproblemsinfromindustryhasgeneratedsomeinterestingadditionaltopics.Ihavealsoaddeddiscussionofsomeofthelesscommonbutpuzzlingtopicssuchashighcontactratiogearswhichareincreasinglybeingusedtoreducenoise.Testingproceduresarealsodiscussedinmoredetailtogetherwithsomepracticalproblemsandsomeslightlyextendeddescriptionofthefailuresthatmaybeencounteredandtheirrelationship,orlackofit,tonoiseproblems.IhopethatfewerrorsormistakeshavecreptintothebookbutifreadersdiscovererrorsIwillbeverygratefuliftheyletmeknow(e-mailjds1002@eng.cam.ac.uk)
2025/7/9 10:55:05
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