Flann Microwave 625 User manual

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POWER‐OVER‐ETHERNET
SYSTEMATTENUATOR
MODEL625
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INSTRUMENTMANUAL
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Version1.2
June2020

FlannMicrowave Model625
Model625Version1.2 June2020 Page2of16
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FlannMicrowave Model625
Model625Version1.2 June2020 Page3of16
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1GENERALINFORMATION.......................................................................................4
1.1WARRANTY....................................................................................................................................4
1.2DESIGNCHANGES..........................................................................................................................4
1.3SPECIFICATIONCHANGES..............................................................................................................4
1.4REPAIRS.........................................................................................................................................4
2GETTINGSTARTED.................................................................................................5
2.1ETHERNETCONTROL.....................................................................................................................5
2.2MANUALINTERFACE.....................................................................................................................6
3ENVIRONMENTALCONSIDERATIONS.....................................................................7
4SYSTEMFUNCTIONSANDFEATURES......................................................................8
4.1POWER‐UPPROCEDURE................................................................................................................8
4.2SETTINGATTENUATION................................................................................................................8
4.3INSTRUMENTERRORS...................................................................................................................9
4.4FIRMWAREUPGRADES..................................................................................................................9
5ETHERNETCOMMANDSTRUCTURE......................................................................10
5.1NOTATION...................................................................................................................................10
5.2COMMANDSET...........................................................................................................................10
5.3STATUSBYTE................................................................................................................................12
5.4COMMANDSUMMARY...............................................................................................................12
5.5EXAMPLES....................................................................................................................................13
6CAREOFTHEINSTRUMENT..................................................................................14
7REGULATORYINFORMATION...............................................................................15
7.1DECLARATIONOFCONFORMITY.................................................................................................15
7.2WASTEELECTRICALANDELECTRONICEQUIPMENT(WEEE)REGULATIONS..............................16

FlannMicrowave Model625
Model625Version1.2 June2020 Page4of16
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1GENERALINFORMATION
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1.1WARRANTY
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FlannMicrowaveLtdwarrantseachproductofitsmanufacturetobefreefromdefectsinmaterialand
workmanship.Ourobligationunderthiswarrantyislimitedtoservicingoradjustinganyproducts
returnedtoouraddressforthatpurpose,andtomakegoodatourfacilityanypartorpartsthereof,
withinoneyearofthedateofdeliverytotheoriginalpurchaser,andwhichafterexaminationshallbe
showntooursatisfactiontohavebeenthusdefective.Warrantyreturnsorrepairsmustfirstbe
authorisedbyFlannMicrowaveLtd,andthenreturnedinaccordancewithourdetailedinstructions,with
transportchargesprepaid.Flanndoesnotauthoriseanythirdpartytoassumeforthemanyother
liabilityinconnectionwiththeoriginalsalethantheforegoing.Unauthorisedtamperingwithsealed
screwswillinvalidatethewarrantyandmayresultindamagetotheproduct.
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1.2DESIGNCHANGES
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FlannMicrowaveLtdreservestherighttomakechangesinthedesignofitsproductswithoutreference
to,andwithoutincurringanyobligationtomakethesamealterationson,productspreviouslypurchased.
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1.3SPECIFICATIONCHANGES
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FlannMicrowaveLtdreservestherighttochangeanyspecificationnotedhereinwithoutpriornotice.
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1.4REPAIRS
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Whenwishingtoreturninstrumentsforrepairs,orforanyotherreason,pleasecontactthisCompanyfor
shippinginstructions.Toexpediterepairservice,itisimportanttoprovidetypenumber,serialnumber
andadetaileddescriptionofthereason,includingallfaultsymptoms,forthereturnoftheinstrument.
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FlannMicrowaveLtd
DunmereRoad
Bodmin
CornwallPL312QL
UnitedKingdom
Tel:+44(0)120877777
Fax:+44(0)120876426
Email:[email protected]
http://www.flann.com

InUSAcontact:

FlannMicrowaveInc
OneBostonPlace
Suite2600
Boston
MA02108‐4407
Tel:(617)6217034
Fax:(617)5778234
Email[email protected]
http://www.flann.com


FlannMicrowave Model625
Model625Version1.2 June2020 Page5of16
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2GETTINGSTARTED
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PluganEthernetcableintoanEthernetswitch,routeroradaptorcapableofprovidingPower‐over‐
Ethernet(PoE)toIEEE802.3af,andconnecttheotherendtothe625instrument.
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TheEthernetinterfaceisprovidedbyaLantronixxPICO110device.Undernocircumstancesshouldthis
devicebere‐configured.
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IntheeventthatthelabelshowingtheinstrumentMACaddressisaccidentallyremovedfromthe
instrument,itispossibletorunautilitythatwillreadtheinstrument’sMACaddress.This‘DeviceInstaller’
programcanbedownloadedfrom:
https://www.lantronix.com/products/deviceinstaller/
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Whensuppliedfromthefactory,thedeviceisconfiguredtoconnectautomaticallytoanetworkusingthe
DHCPprotocolwithdynamicIPaddress.
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2.1ETHERNETCONTROL
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ThefollowingareexamplesofestablishingcommunicationwiththeattenuatorusingTelnetorRAW:
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TELNET
TocontroltheinstrumentusingaTelnetconnection,withaTelnetclient(controlprogram)suchasPuTTY:
Entertheinstrument’sIPaddress,e.g.128.0.0.59,andtheportnumberof10001;
Totesttheconnectiontype‘identity?’andpressreturn.Theinstrumentwillreturnitsidentity
string,e.g.FLANNMICROWAVE,625PRVA,123456,V1.1.
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TheWindowsOperatingSystemincludesaTelnetfunctionwhichcanbeusedfromaCommandLine
window.ThisfeaturemayhavetobeturnedoninWindowsfirst.
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Someclientsdonotechothetypedinformation,oratleastnotwithoutchangingdefaultsettingsto
allowthis.The\nterminatorisnotrequiredinTelnet.
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RAW
TocontroltheinstrumentusingaRAWconnection,withasuitableclientprogramsuchasPuTTY:
EntertheIPaddress,eg128.0.0.59anduseport10001;
Youarenowconnectedtotheinstrument;
Totesttheconnection,enter‘identity?\n’andpressreturn.Theinstrumentwillreturnitsidentity
string,egFLANNMICROWAVE,625PRVA,123456,V1.1.
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Notethatthe\nterminatorisrequiredforRAWcommandsunlessusingaprogram,suchasPuTTY,that
terminateseverycommandstring.
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FlannMicrowave Model625
Model625Version1.2 June2020 Page7of16
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3ENVIRONMENTALCONSIDERATIONS
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TheModel625SystemAttenuatorisdesignedtooperatein‘non‐hazardous’indoorindustrialor
laboratoryareas,orinaprotectedoutdoorenvironment.
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TheoperatingenvironmentmustconformtotheconditionsshowninTable1.Operationoutsidethese
rangescannotbeguaranteedandmayposedangerstotheoperatororcausemechanicalorelectrical
failureoftheequipment.Theinstrumentcanbecomewarmduringoperation,anditisimportantto
maintainadequateventilationatalltimes.
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EnvironmentalConditionRanges
TemperatureOperating+5°cto+35°c
TemperatureNon‐Operating0to+40°c
Humidityoperating(max)90%withoutcondensation
HumidityNon‐operating(max)95%withoutcondensation
Table1:EnvironmentalLimits
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FlannMicrowave Model625
Model625Version1.2 June2020 Page8of16
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4SYSTEMFUNCTIONSANDFEATURES
4.1POWER‐UPPROCEDURE
WhentheinstrumentisconnectedtoaPoE‐compatiblenetwork,itresetstothe60dBreferenceposition.
Thisactionmaybedisabledifrequired,buttheinstrumentmustberesetassoonaspossibletoestablish
thecorrectreferencealignment.Refertothe‘PWR_ON_RST’and‘RESET_INST’commandsinsection5.2.
Theinstrumentissuppliedwith‘PWR_ON_RST’settoON.

Theinstrumentcanbeprogrammedtoreturntothelastsettingpriortopowerbeingremoved.Referto
the‘HOLD_SET’command.

4.2SETTINGATTENUATION

Theinstrumentcanbesettoattenuationvaluesintherange0.0dBto60.0dBusingtheVALUE_SET
command.Thesmallestincrementalvaluedependsontheabsoluteattenuation:0.01dB(upto20dB
attenuation),0.02dB(20to30dBattenuation),0.05dB(30to50dBattenuation)and0.1dB(50to60dB
attenuation).Itispossibletopositiontheinstrumentusingmotorstepsintherange0to9799,giving
increasedresolutionatlowerattenuationsettings.Refertothe‘STEPS_SET’commandinsection5.2,and
Table2below.Notethatthestepsarefrom0dB,andthecharacteristicisnon‐linear.
Attenuation dB Steps Attenuation dB Steps Attenuation dB Steps
0.0 0 20.0 7952 40.0 9362
1.0 2139 21.0 8070 41.0 9398
2.0 2997 22.0 8181 42.0 9432
3.0 3635 23.0 8285 43.0 9464
4.0 4156 24.0 8384 44.0 9494
5.0 4602 25.0 8476 45.0 9522
6.0 4992 26.0 8563 46.0 9549
7.0 5340 27.0 8644 47.0 9574
8.0 5653 28.0 8721 48.0 9598
9.0 5938 29.0 8794 49.0 9621
10.0 6198 30.0 8862 50.0 9642
11.0 6437 31.0 8926 51.0 9662
12.0 6658 32.0 8987 52.0 9681
13.0 6862 33.0 9044 53.0 9699
14.0 7052 34.0 9098 54.0 9716
15.0 7229 35.0 9149 55.0 9731
16.0 7393 36.0 9196 56.0 9746
17.0 7547 37.0 9242 57.0 9761
18.0 7691 38.0 9284 58.0 9774
19.0 7826 39.0 9324 59.0 9787
20.0 7952 40.0 9362 60.0 9799
Table 2: Attenuation – Steps from 0dB
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FlannMicrowave Model625
Model625Version1.2 June2020 Page9of16

Whenthehighattenuationsettingisactive,thisenablesacoarseattenuationsettingofupto90dB.
Refertothe‘HIGH_ATTEN’command.Theattenuationaccuracybeyond60dBisnotguaranteed.The
frontpaneldisplaycoloursareinvertedwhentheattenuationissettoavaluegreaterthan60dB.

4.3INSTRUMENTERRORS

InstrumenterrorscanbeidentifiedbyinterrogatingtheStatusByte(seeinformationforthe‘INST_STAT?’
insection5.2,andrefertoTable3).
4.4FIRMWAREUPGRADES
UserswillbeabletoupgradetothelatestversionoftheModel625firmwareovertheEthernetinterface
byfollowingtheinstructionsgivenontheFlannMicrowaveLtdwebsite,www.flann.com.
Acopyofthelatestissueofthismanualwillalsobeavailablefordownload.


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5ETHERNETCOMMANDSTRUCTURE

Thissectiondetailsthecommandsavailableandthevalidoperandsthatmaybeusedwiththem.

5.1NOTATION

Uppercaseboldcharactersrepresentthe(programcode)commands,whichmustappearexactlyaslisted.
Programcodecommandsarenotcasesensitive,i.e.upperandlowercasecharactersareaccepted.The
inputbufferis50bytesmaximum.

Charactersenclosedinthe{}bracketsarequalifiersattachedtothebasiccommand.Aspacemaybe
insertedbetweenitandbasiccommand,e.g.{ON|OFF}showsthateitherONorOFFcanbeattachedto
therootmnemonic.

Forexample,the‘PWR_ON_RST’commandhasthreepossibleapplications:

1.PWR_ON_RSTON‐ SwitchonthePower‐onReset
2.PWR_ON_RSTOFF ‐ SwitchoffthePower‐onReset
3.PWR_ON_RST?‐QuerythepresentstateofthePower‐onReset

Eachprogramcommandmustbeterminatedwith\n(Hex0x0a),unlessusingTelnet
Forexample:‘VALUE_SET45.3\n’

Forinstrumentstatecommands(identifiedwith‘Query:Valid’),appendthequestionmarkcharacter(?)
tothebasiccommandwithoutqualifierstointerrogatethestateofthefunctions.Theinstrument
respondstothequeryasdescribedforeachcommand.ForanON/OFFcommand,theresponseisa‘1’or
a‘0’toindicateOnorOff.Forasettablefunction,suchasVALUE_SETvalue,usingVALUE_SET?returns
thefunction’scurrentvalue.

5.2COMMANDSET



VALUE_SET[value]
Setstheattenuationofthemicrowaveinstrument,indB,tovalue
Query: Valid,returnssetting
Value 0to60.0(dB)

STEPS_SET[value]
Setstheattenuationofthemicrowaveinstrument,insteps,tovalue
Query:  Valid,returnsnumberofstepsfromreference
Value  0to9799

INCR_SETvalue
Setsthestoredincrementtovalue
Query:  Valid,returnsstoredincrement
Value 0to60.0(dB)

INCREMENT
Increasethemicrowaveinstrumentsettingbythestoredincrement(dBonly)
Query: Invalid

DECREMENT
Decreasemicrowaveinstrumentsettingbythestoredincrement(dBonly)
Query: Invalid

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
STORE_VALvalue
Setsthestoredsettingtovalue
Query:  Valid,returnsstoredsetting
Value 0to60.0(dB)

REC_SETTING
Setstheinstrumenttothestoredsetting(dB)
Query: Invalid

HIGH_ATTEN{ON|OFF}
Setsthehighattenuationfeatureonoroff
Query: Valid,returns1foron,or0foroff
Thefrontpaneldisplaycoloursareinvertedwhentheattenuationissettoavaluegreaterthan60dB.

HOLD_SET{ON|OFF}
Returnsthemicrowaveinstrumentstothepositionwhenpowerwasremoved
Query:  Valid,returns1foron,or0foroff

PWR_ON_RST{ON|OFF}
EnablesordisablesthePower‐onreset
Query: Valid,returns1foron,or0foroff

RESET_INST
Re‐synchronisetheinstrumentbydrivingtothereferencepositionof60.0dB.Thisisthesoftware
equivalentofcyclingthepower.
Query:  Invalid

IDENTITY?
Outputstheidentitystring,e.g.‘FLANNMICROWAVE,625PRVA,123456,V1.1’,where123456isthe
instrumentserialnumber,andV1.1isthefirmwareversion
Query: Valid,returnstheidentitystringoftheinstrument.

INST_STAT?
Requestthevalueofthestatusregister(byte)
Query: Valid,returnthestatusregistervalue,avaluefrom0to255(seeTable3)

CLR_NVRAM
ClearstheentireEEPROMbacktodefaultvalues.
Query:  Invalid




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

5.3STATUSBYTE

BitValueError
01EEPROMerror–failuretoreadorwritetotheEEPROM
12Outofrangerequest–incorrectvaluerequested
24Poweron–apower‐onhasoccurredsincethelastreadoftheregister
38Commanderror–incorrectsyntaxinacommandline
416Executionerror–failuretoachievesetting
532Notused
664ErrorE2–noencoderoutputfound
7128ErrorE1–encoderindexnotfound

Table3–StatusByteinterpretation

Note:ThevalueoftheStatusRegisterwillreturntozeroafterbeingread.


5.4COMMANDSUMMARY

CommandSuffixActionQuery
INCREMENT  Increasesettingbystoredincrement 
DECREMENT  Decreasesettingbystoredincrement 
VALUE_SETValueSwitchestovaluemodeandsetstovalue
STEPS_SETValueSwitchestostepsmodeandsetstovalue
INCR_SETValueStoresincrementinthepresentoperatingmode
RESET_INST  Reinitialisetheinstrumentontheactivechannel 
INST_MODE?  Outputsthecurrentoperatingmode
HIGH_ATTENON/OFFEnableordisablethehighattenuationfeature
PRECISIONON/OFFEnableordisabletheprecisionsettingfeature
REC_SETTING  Returnstheinstrumenttothestoredsetting(seebelow) 
STORE_VALValueStoreasettingdeterminedbyvalue(modedependent)
IDENTITY?  Returnstheinstrumentidentitystring
INST_STAT?  ReturnstheStatusRegistervaluefrom0to255
PWR_STAT?  Returnsthepower‐upstatistics
PWR_ON_RSTON/OFFEnable/Disablepower‐onreset
HOLD_SETON/OFFReturninstrumenttolastpower‐offcondition

Table4–CommandSummary





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

5.5EXAMPLES


RESET_INST\nresettheinstrument
VALUE_SET?\nreturnsavalueof60

VALUE_SET23.4\n   positionto23.4dB
VALUE_SET?\n   returnsthevalue23.4

STEPS_SET453\n   switchtostepsmodeandpositionto453
STEPS_SET?\n   returnsthevalue453

INCR_SET10\n   storeanincrementalvalueof10steps
INCREMENT\n   move+10steps
DECREMENT\n   move‐10steps

Acommandstringmustbenomorethan50bytes,andterminatedbyanewline(Hex0x0a)wheninRAW.The\n
terminatorisnotrequiredwhenusingTelnet.


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Model625Version1.2 June2020 Page14 of16

6CAREOFTHEINSTRUMENT

Internally,the625SystemAttenuatorisadelicateinstrument.Whenthewaveguideportsarenot
connected,itisrecommendedthatflangecovers(suchassuppliedwiththeinstrument)arefitted.This
willhelppreventinadvertentdamagetotheflangesurfacesandinternalvanes,andpreventdustfrom
enteringthewaveguidestructure.



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7.2WASTEELECTRICALANDELECTRONICEQUIPMENT(WEEE)
REGULATIONS

FlannMicrowaveisregisteredwiththeUnitedKingdomEnvironmentAgencyasasupplierofelectrical
andelectronicequipment,andmakestherequireddeclarationsinaccordancewithWEEERegulations.

WherethisproductwassuppliedtoacustomerintheUnitedKingdom:
Whenthisproductisattheendofitslife,FlannMicrowavewillacceptitsreturnforsafedisposaland
recycling.PleasecontactFlannMicrowaveforfullinstructionsbeforereturninganyWEEE.Thereturn
addressis:
FlannMicrowaveLtd
DunmereRoad
Bodmin
CornwallPL312QL
Tel.0120877777

WherethisproductwassuppliedtoacustomeroutsidetheUnitedKingdom:
PleasefollowlocalregulationsregardingthedisposalandrecyclingofWEEE,orcontactyourdistributor
foradvice.

FlannMicrowaveLtdcanprovideinformationonthematerialsusedinthisinstrumenttoassistintheir
recyclingorsafedisposal.



