Schaffner NSG 438 User manual

NSG 438
601-241D
User Manual
NSG 438
ESD Simulator

NSG 438
Contents
1Explanationofthesymbolsused in thismanual.........................1
2Safety.............................................................................................2
3Introduction...................................................................................4
3.1.Electrostaticdischarge (ESD)..........................................................4
3.2.Simulation.......................................................................................4
3.3.Effectson the EUT...........................................................................7
4TheNSG438 system.....................................................................8
4.1.The generator..................................................................................9
4.1.1.Function modules............................................................................9
4.1.2.Blockdiagram................................................................................10
4.1.3.Operating elements.......................................................................12
4.2.Systemcomponents......................................................................14
4.2.1.Battery charger/ powersupplyunit................................................14
4.2.2.Options..........................................................................................15
4.2.3.Discharge networks.......................................................................15
4.2.4.Remotetriggering..........................................................................16
4.2.5.Interlock.........................................................................................18
4.2.6.Measurement adapters..................................................................22
5Commissioning............................................................................23
5.1.Function test..................................................................................23
6Operation.....................................................................................25
6.1.Switching on..................................................................................25
6.2.Battery monitoring..........................................................................26

NSG 438
6.3.Operation and settings...................................................................27
6.3.1.Displaymode.................................................................................28
6.3.2.Voltage..........................................................................................29
6.3.3.Polarity..........................................................................................30
6.3.4.Counter.........................................................................................30
6.3.5.Repetition......................................................................................31
6.3.6.Settings.........................................................................................32
6.3.7.Language......................................................................................32
6.3.8.Deviceinfo....................................................................................32
6.3.9.Discharge......................................................................................32
6.3.10.Threshold......................................................................................33
6.3.11.ISO-Selftest...................................................................................34
6.3.12.Level.............................................................................................35
6.3.13.Program........................................................................................35
6.3.14.Triggerbutton................................................................................36
6.3.15.Continuousoperation.....................................................................36
7Testprocedures...........................................................................37
7.1.Standard-compliant procedures.....................................................37
7.2.Othersituations.............................................................................32
8Verificationofthepulse data......................................................39
9Typicalpulse data........................................................................40
10 Maintenance.................................................................................41
10.1.Calibration.....................................................................................41
10.2.Exchanging the R-Cnetwork.........................................................42
10.2.1.Reduction of pulserepetition rateatincreased capacity.................43

NSG 438
10.3.Repairs..........................................................................................43
10.4.NSG 438 Systemerrormessages................................................. 44
10.5.Disposal........................................................................................ 45
11 Technical specifications..............................................................46
12 ESDstandards.............................................................................48
13 Warranty.......................................................................................49
14 Orderinginformation...................................................................50
15 Addresses....................................................................................51
Manufacturer
Schaffner EMV AG
Nordstrasse 11, 4542 Luterbach/Switzerland
www.schaffner.com

NSG 438
1
1Explanationofthesymbolsused in thismanual
Pleasetakenoteof the following explanationsof the symbolsused inorder
toachievethe optimumbenefitfromthismanual and toensuresafety
during operation of theequipment.
The following symboldrawsyourattention toacircumstancewherenon-
observation of the warning couldlead toinconvenienceorimpairmentin
the performance.
Example:
Thisconnection mustnotbeconfusedwiththemain
power input
The following symboldrawsyourattention toacircumstancewherenon-
observation of the warning couldlead tocomponent damage ordangerto
the operating personnel.
Example:
Never connectordisconnectthepistolwhilesystemis
performingatest

NSG 438
2
2Safety
Thisitemofequipment,together withitsaccessories,
works athighvoltages ofup to 30kV.Anycareless
handlingornon-observance oftheoperating
instructionscanhave dangerousconsequences.
The NSG438 generatorisnot atoy!It isaprofessionaltool and belongs
onlyinthehandsofspecialistsand appropriatelytrainedpersonnel.
Whenpowered byitsownbatteriesthe generatorcan beactiveeven
without anypowercablebeing connected.
The instrument must not be switched on unless acorrectlyconnected
earthorearthcable(pulsecurrent returnpath)isinplace. The original
earthcablesuppliedwiththe instrumentistobe used.Anyreplacement
cablesmust be fabricated insuchawaythat theycannot be accidentally
connected toamainsoutletsocket. Donot touchthe test finger!Thereisa
dangerofan unpleasant electricshock if the instrumentisswitched on
(LC-displayactive).
Onlytrainedpersonnelmay operatetheinstrument.
Personnel fittedwithaheart-pacemaker must notoperate
the instrument norapproachthe test rigwhileitisin
operation.
Theseoperating instructionsforman integralpartoftheinstrument and
must be availabletothe operating personnelat alltimes.
The instrument must not be used foranypurposeotherthan testing the
ESDimmunityofelectronicequipment.
The construction ofthe generatorisnotdesigned foruseinan explosive
environment.

NSG 438
3
Each electrostaticdischargeproduces powerful
electromagneticinterference.
Nearbyelectronicequipment can be seriouslydisrupted
unless the appropriatecounter-measuresaretaken.
PerformESDtestspreferablyinashielded room.
Ifanetwork needsto beexchanged, thetesthas tobe
stoppedfirst,followedbyawaitingtime ofatleast5s
to ensure thevoltagebeinginternallydischarged.
The rechargeablebatteriesinthe basestation must notbe short-circuited
underanycircumstances. Theymust onlybe recharged withthe original
charging unitsupplied withthe generator.Shouldtheyhavetobe
replaced, kindlyobservethe relevantrecommendationsfortheircorrect
disposal.
The instrument must not be opened. Repairs,maintenancework and
internal adjustmentsareonlytobecarried out byaqualifiedservice
engineer. Usethe instrument onlyindrysurroundings. Anycondensation
that occursmust be allowed toevaporatebeforeputtingthe generatorinto
operation. Long periodsofexposuretosunlightand excessivewarmingby
externalenergysourcesaretobe avoided.
Do not continue tousethe instrument shouldanymechanical damage
occur.The instrument'shousing and the cablehavebothan insulating and
ascreening function, whichcan onlybe assured whilethe housing is
intact. Returnadamaged generatortoaSchaffnerservicecentre
immediatelyforrepair.
SchaffnerEMV AG Luterbach, Switzerland and theassociated sales
organization accept no responsibilityforpersonalormaterialdamage nor
foranyconsequentialdamage that resultsfromirresponsibleoperation of
thisinstrument.

NSG 438
4
3Introduction
Underappropriateambientconditions, bothmaterial objectsand even the
human bodyitself can becomecharged withelectrical energy. Thiseffect
isdue to"electrostatics", aphenomenon that hasbeen knownsincethe
earliesttimes.Thalesvon Milet(600 BC)noticed howamberattracted very
light particleswhen it wasrubbed. Touching acharged itemagainst a
conductiveobjectleadstoacharge equalization through aspark
discharge, whichproducesabrief but powerfulelectro-magneticfield.
3.1.Electrostaticdischarge (ESD*)
Thiseffect canbe explained asfollows: Twoinsulating substanceswith
differing dielectricconstantsbecomecharged when rubbed together,i.e.
one materialgiveselectronstothe otherone.Thiseffectisknownas
electrostaticcharging.The samecan happen toaperson.When
somebodywalksaround inadry atmosphereon carpetwhilewearing
shoeswithgood insulating properties, acharge ofseveralthousand volts
can be built up.If,now, that person comesclosetoaconductivesurface,
the charge that heorshe iscarrying flowsawaythroughaheftyspark
discharge.
The high equalizing currentthat flows, and the associated large
electromagneticfieldthat henceresults,can causeelectronicdevices
(computers, terminals, process controllers,vehicleelectronics, solidstate
devices, credit ormemorycards, etc.)tomalfunction orevenbe destroyed.
*ESD= electrostaticdischarge
3.2.Simulation
Asystematicinvestigation of electronicequipmentand installationsto
determine theirelectromagneticcompatibility(EMC)is,today, anecessity
if one isnot prepared tosufferthe economicdisadvantagesthat could
otherwiseensue. Asalogical consequence, appropriatetesting isnowa
legalrequirement forthe saleof electronicproductswithinthe EU.
The ESD-test playsan importantroleinthe range ofinterference
sensitivitytests. It simulatesfrequentlyoccurring effectsand guidesthe
developmentengineertoanyweakspotsinan instrument oritemof
equipmentthrough acombination of high voltage and high frequency
properties.