COM-power corporation PAM-840A User manual

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INSTRUCTIONMANUAL
PreamplifierModelPAM‐840A
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19121ElToroRd●Silverado,CA92676●(949)459‐9600●fax(949)635‐0329●com‐power.com
REV21113
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INSTRUCTIONMANUAL
For
MicrowavePreamplifier
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ModelPAM‐840A
18to40GHz,42dBGain
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INSTRUCTIONMANUAL
PreamplifierModelPAM‐840A

19121ElToroRd●Silverado,CA92676●(949)459‐9600●fax(949)635‐0329●com‐power.com
REV21113
TableofContents
1.0Introduction..............................................................................................................3
2.0ProductSpecifications..............................................................................................4
2.1OtherrelatedequipmentavailablefromCom‐Power...............................................4
2.2OtherpreamplifiermodelsavailablefromCom‐Power..............................................4
3.0ImportantPrecautions..............................................................................................5
3.1ExcessiveRFinput.........................................................................................................5
3.2Saturation.......................................................................................................................5
3.3Calibration......................................................................................................................5
4.0Warranty...................................................................................................................6
4.1Maintenance.................................................................................................................6
5.0Applicationandproductoperation..........................................................................7
5.1Application.....................................................................................................................7
5.2Itemsincludedwithpreamplifier.................................................................................7
5.3FrontandRearPanel................................................................................................8
5.3.1FrontPanel...................................................................................................................................8
5.3.2BackPanel.....................................................................................................................................8
5.3.3BatteryReplacement....................................................................................................................8
6.0TypicalPreamplifierGain.........................................................................................10
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INSTRUCTIONMANUAL
PreamplifierModelPAM‐840A

19121ElToroRd●Silverado,CA92676●(949)459‐9600●fax(949)635‐0329●com‐power.com
REV21113
1.0Introduction
Thismanualincludesproductspecifications,safetyprecautions,productmaintenanceand
warrantyinformation.

InformationcontainedinthismanualisthepropertyofCom‐PowerCorporation.Itisissued
withtheunderstandingthatnoneofthematerialmaybereproducedorcopiedwithout
permissionfromCom‐Power.

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INSTRUCTIONMANUAL
PreamplifierModelPAM‐840A

19121ElToroRd●Silverado,CA92676●(949)459‐9600●fax(949)635‐0329●com‐power.com
REV21113
2.0ProductSpecifications
Model:PAM‐840A
Electrical
FrequencyRange:18to40GHz
TypicalGain:42dB
Flatness:+2dB
MaxDCinput:0Vdc
MaxRFInput:0dBm
Poutat1dBcompressionpoint:+10dBm
NoiseFigure:<5dB
TypicalReverseIsolation:40dB
I/Oconnections:50Ω,2.9mm(Ktype)female
OperatingPower:15VDC,500mA
BatteryType:Rechargeable6V,2Ah,NimH
Chargingadapter(Output)15VDC,500mA
Chargingtime:8to10hours
Operatingtimewithbatterypower:10Hoursapproximately
ReferenceTemperature:25°C/77°F
Mechanical 
DimensionsLxWxH:7.6x5.95x2.17inches/19.2x15.1x5.5cm
Weight:2.5lbs/1.13kg

Thisequipmentisdesignedforindooruseonly.
2.1OtherrelatedequipmentavailablefromCom‐Power.
• CGO‐51000,40GHzCombGenerator
• AH‐840Hornantenna‐18to40GHz
• AH‐640Hornantenna‐26.5to40GHz
• AH‐826Hornantenna‐18to26.5GHz
• Microwavecablesandconnectors
2.2OtherpreamplifiermodelsavailablefromCom‐Power
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ModelSpecifications
PAL‐010100Hzto30MHz,28dB
PAM‐103A1MHzto1GHz,32dB
PAM‐60001to6GHz,30dB
PAM‐118A1to18GHz,40dB
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Page5of10
INSTRUCTIONMANUAL
PreamplifierModelPAM‐840A

19121ElToroRd●Silverado,CA92676●(949)459‐9600●fax(949)635‐0329●com‐power.com
REV21113
3.0 ImportantPrecautions
Observethefollowingsafetyprecautionstoensureusersafetyandmaximizingtheoperatinglife
ofthepreamplifier.
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• Removethebatteriesfromthepreamplifierwhenitisnotusedforanextendedperiod.
• Useonlythebatterychargeradaptersuppliedwithpreamplifier.
• Replacefusewithsametypeandcurrentlimit
• ReplaceonlywithbatteriessuppliedbyCom‐Power.
• Exercisecautionwhenhandlingthepreamplifierbecauseitissensitiveelectrostatic
discharge.
• Avoidusingthepreamplifierinenvironmentswithexcessiveheatormoisture.

Theonlyuserreplaceablepartinthepreamplifieristhebatterypack.Itcanbeaccessedfrom
thebottomoftheunit.Therearenootheruserserviceablepartsinsidetheunit.Donotremove
themaininstrumentcover.IfthepreamplifierneedsrepairpleasecontactauthorizedCom‐
Powerservicecenter.
3.1ExcessiveRFinput
DonotexceedRFinputlevelindicatedonfrontpanel.ExcessiveRFinputmaydamagethe
preamplifier’ssensitiveinputandwillnotbecoveredunderwarranty.
3.2 Saturation
Inadditionpossibledamagetothepreamplifierinput,excessiveRFsignalsmaycausethe
preamplifiertosaturate.Whenapreamplifierreachessaturationpointthegainwillreduce
andcauseanonlinearincreaseinoutputpowerresultinginaccuratemeasurements.PAM‐
840Acanhandleupto+10dBm(117dBµV)inputsignal.
3.3Calibration
ThefactoryrecommendedcalibrationperiodforthePreamplifieris12months.However,its
performanceshouldbecheckedperiodicallytoensurethepreamplifierisoperatingwithinthe
ratedspecificationgiveninsection2.0ofthismanual.
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Page6of10
INSTRUCTIONMANUAL
PreamplifierModelPAM‐840A

19121ElToroRd●Silverado,CA92676●(949)459‐9600●fax(949)635‐0329●com‐power.com
REV21113
4.0 Warranty
Com‐PowerwarrantstoitsCustomersthattheproductsitmanufactureswillbefreefrom
defectsinmaterialsandworkmanshipforaperiodof3years.Thiswarrantyshallnotapplyto:

• Transportdamagesduringshipmentfromyourplant.
• Damagesduetopoorpackaging.
• Productsoperatedoutsidetheirspecifications.
• ProductsImproperlymaintainedormodified.
• Consumableitemssuchasfuses,powercords,cables,etc.
• Normalwear
• Calibration
• ProductsshippedoutsidetheUnitedStateswithoutthepriorknowlegeofCom‐
Power.

Inaddition,Com‐Powershallnotbeobligedtoprovideserviceunderthiswarrantytorepair
damageresultingfromattemptstoinstall,repair,serviceormodifytheinstrumentby
personnelotherthanCom‐Powerservicerepresentatives.

UndernocircumstancesdoesCom‐Powerrecognizeorassumeliabilityforanyloss,damage
orexpensearising,eitherdirectlyorindirectly,fromtheuseorhandlingofthisproduct,or
anyinabilitytousethisproductseperatelyorincombinationwithanyotherequipment.

Whenrequestingwarranty,calibrationorrepairservices,itisrecommendedthattheoriginal
packagingmaterialbeusedforshipping.Damageduetoimproperpackagingwillvoid
warranty.

Inthecaseofrepairorcomplaint,alabelshouldbeattachedtothehousingofthe
instrumentwhichdescribesbrieflythefaultsobserved.Pleaseincludethename,telephone
numberandemailaddressofthecontactperson.Pleasevisitourwebsitewww.com‐
power.comandobtainanRMAnumberbyselectingserviceandcompletingtheonlineform.

4.1Maintenance

Thisproductcontainsnouserreplaceablepartsotherthanthebattery.Iftheunitdoesnot
operateorneedscalibration,pleasecontactCom‐PowerCorporation.Donotremovethe
instrumentcover.Thebatteriescanbeaccessedfromthethebottomoftheunitifneeds
replacement.Anymodificationsorrepairsperformedontheunitbyanyoneotherthanan
authorizedfactorytrainedtechnicianwillvoidwarranty.

Theexteriorsurfacemaybecleanedwithmilddetergentandthenbewipedwithadry,clean,
lint‐freecloth.Usecaretoavoidanyliquidsorforeignobjectsenteringthechassis.

Page7of10
INSTRUCTIONMANUAL
PreamplifierModelPAM‐840A

19121ElToroRd●Silverado,CA92676●(949)459‐9600●fax(949)635‐0329●com‐power.com
REV21113
5.0 Applicationandproductoperation
5.1Application

Com‐PowerPAM‐840APreampliferaredesignedspecificallyforEMIradiatedemissions
testingfrom18to40GHz.

ThePAM‐840Ahighgainofthepreamplifier

• Amplifiessignalswithinitsoperationalfrequencybandtoimprovetheoverall
signalnoiseratioofthemeasurementsystem.
• Compensatesforsignallossesassociatedwiththeuseofcablesandantennas
operatingwithinitsfrequencyrange.
• Increasessensitivityofoveralltestsystem.


5.2Itemsincludedwithpreamplifier

ThefollowingaccessoriesanddocumentsaresuppliedwiththeModelPAM‐840APreamplifier:
 BatteryCharger/PowerAdapter
 InstructionManual
 CalibrationdatawithcertificatetraceabletoNIST
 Pre‐installedbatteries
Optionalitem
• ISO‐17025calibrationdataandcertificate

Page8of10
INSTRUCTIONMANUAL
PreamplifierModelPAM‐840A

19121ElToroRd●Silverado,CA92676●(949)459‐9600●fax(949)635‐0329●com‐power.com
REV21113
5.3FrontandRearPanel
5.3.1FrontPanel
ThesimplepanelshowninthephotobelowconsistsofNtypeconnectorforRFinputand
output,powerswitchwithLEDindicator,chargingindicatorandbatterylowindicator.Please
observethemaximuminputratingprintedonfrontpanel.Whenthebatterylowindicatorturns
on,thepreamplifierneedscharging.However,youcancontinueusingitpoweredbybattery
chargeradapter.Thebatterylowindicatorwillturnoffwhentheadapterispluggedandthe
chargingindicatorwillturnon.Forfastercharging,turnoffpreamplifier.

5.3.2BackPanel
Thebackpanelshownbelowconsistsoffuseholderandchargingadapterinputsocket.Make
suretouseonlythechargeradaptersuppliedbyCom‐Power.Damagecausedtothe
preamplifierbyusinganalternateadapterwillvoidwarranty.

5.3.3BatteryReplacement

Thereplaceablebatterypackcanbeaccessedfromthebottomofthepreamplifier.Fourscrews
securethecovertothebatterycompartment.Ifthebatteriesarenolongerholdingthecharge,
replacementbatterypackcanbepurchasedfromCom‐Power.


Page9of10
INSTRUCTIONMANUAL
PreamplifierModelPAM‐840A

19121ElToroRd●Silverado,CA92676●(949)459‐9600●fax(949)635‐0329●com‐power.com
REV21113
Troubleshootingtips

Ifthebatteryisnotholdingchargeorthechargingindicatordoesnotturnon,openthebattery
compartmentandmakesurethebatteryisproperlyconnected.Ifthebatteriesaresecurely
connected,checkthefuseonthebackpanel.Ifthefuseisblown,replaceit.Pleaseheedthe
warninglabelonthebottomofthefuseholderandrearpanel.
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Ifthebatterychargingindicatorstilldoesnotturnon,checkthechargingadaptertomakesure
itissupplyingtheratedvoltageontheadapter.Ifthechargingadapterisproducingtheproper
voltage,thebatteriesmayhavetobereplaced.
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Page10of10
INSTRUCTIONMANUAL
PreamplifierModelPAM‐840A

19121ElToroRd●Silverado,CA92676●(949)459‐9600●fax(949)635‐0329●com‐power.com
REV21113

6.0TypicalPreamplifierGain
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