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SFF8639TestAdapterUserManual(Preliminary)

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Page|6

DocumentNo.910‐0034‐000Rev.A(Preliminary)

TheSFF‐8639TestAdapterCareandHandlingPrecautions

TheSFF‐8639TestAdapterrequirescarefulhandlingtoavoiddamage.Improperhandling

techniques,orusingtoosmallacablebendradius,candamagethecoaxialcableconnections

withintheadapterhousingorthecablesthemselves.Thiscanoccuratanypointalongthe

cable.Toachieveoptimumperformanceandto

prolongthe8639‐TPA’slife,observethe

followinghandlingprecautions:

 CAUTION1:AvoidTorqueForces(Twisting)

Whileindividualcoaxialcableswithinthetestadapterhavesomerotationalfreedom,

twistingthe8639‐TPAasaunit,withoneendheldstationary,maydamageorseverely

degradeperformance.AdherencetoCaution

5(below)helpstoavoidtwisting.



 CAUTION2:AvoidSharpCableBends

Neverbendcoaxialcablesintoaradiusof26mm(1‐inch)orless.Neverbendcablesgreater

than90°.Singleormultiplecablebendsmustbekeptwithinthislimit.Bendingthe8639‐TPA

cablesless

thana26mm(1‐Inch)radiuswillpermanentlydamageorseverelydegradetest

adapterperformance.



 CAUTION3:AvoidCableTension(PullForces)

Neverapplytension(pullforces)toanindividualcoaxialcablethatisgreaterthan2.3kg

(5lbs.).Toavoidapplyingtension,alwaysplaceaccessoriesandequipment

onasurfacethat

allowsadjustmenttoeliminatetensiononthe8639‐TPAandcables.Useadjustable

elevationstandsorapparatustoaccuratelyplaceandsupportthe8639‐TPA.



 CAUTION4:Connectthe8639‐TPAFirst

Topreventtwisting,bending,orapplyingtensiontothecoaxialcableswhenconnecting

a

8639‐TPA,alwaysattachthe8639‐TPAtothedeviceundertest(DUT)orcableundertest

beforeattachinganySMAconnectors.Carefullyalignthe8639connectorsandthengently

pushtheconnectorstogetheruntilfullyseated.



Ifthe8639‐TPAmustbeturnedortwistedtomakeconnection

totheDUT,avoidusingthe

8639‐TPAhousingalonetomakethisoccur.Trytodistributethetorqueforcesalongthe

lengthofthetestsetupandcabling.Ifthisisnotpossible,itisrecommendedtofirstloosen

ordisconnecttheSMAconnectionsatthe8639‐TPA,makethe

connectiontotheDUTand

thenre‐tightenorattachthetestequipmentleads.

NOTE:Onlygripthetestadapterhousingwheninsertingor

extractingthe8639‐TPAtoorfromtheDUT.Pullingdirectlyonthe

8639‐TPAcablesorusingthemtoinsertthe8639‐TPAmaycause

damage.

 CAUTION5:CarefullyMakeSMAConnections

Toconnectthe8639‐TPASMAconnectors,followthesesteps:

1. Holdthecablestationarybygraspingthecableattheblackheat‐shrinksection

neartheSMAconnector.

2. InsertthematingSMAbarrelandhand‐tightenthefree‐spinningSMAnutonto

the

connectorwhileavoidingpulling,bending,ortwistingthe8639‐TPAcoaxialcable.

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