Black Box IC477A-F-R2 manual Appendix C. Self-Test, There’snotenoughoranypowertotheConverter.The

1)ToDIPperformswitchforaself4W-test/functionalitypoint-to-pointoperationstofthe(seeunits,theAPPENDIXsetchartthein8C:-positionSelf-Test

Appendix C. Self-Test

4)3)2)IfSndUsingreceiveXMT+youct ondatatworeceivebckand3.2fromshort.2.RCV+).nothingthepieces.RSConnectback-of232twised...devicethe-otherpair.Whatevercable,wirebetweenconnectyousendoneXMToutwire-youandbetweenshouldRCV-.

a)there’snotenough(orany)powertotheConverter.The

b)oneConverterorbothrequirsofthetwistedatleast-pair6VDCcablesunderloadisbad.Or,.Or,

c)theConverter’sDTE/DCEswitchisinthewrongposition.Or,

5)Ifonyoud)thesufficientreeiveRCVconnectionthedataisdefectiveback.Ifthatbut.doesitisgarled,notbyresolvefliptheproblem,+and-connectionsmakesure

6)Ifthaabove)you.receivevoltagebackwhatisbeingyousent,suppliedtheConvertertheRSis-232workinginterfaceproperly(se4a,.

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