4Links EtherSpaceLink Series User manual

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EtherSp ceLink f milyUser M nu l
FlexibleSpaceWire Router
FSR-RG408 to Version 0.2
Manual Version 4
The Flexible SpaceWire Router (FSR) from 4Links provides the means to simulate the
NetworkLayerroutingswitch capabilitiesspecified inthe ECSS-E-ST-50-12C (31st July
2008)SpaceWirestandard.
Implementedon 4LinksRG8andRG8Rplatforms,the FSR provideseight ports, which may
be usedasasingle 8-portrouterormaybe splitinto several completely independent
routers,forexample 4+4 or3+5 ports.
A SpaceWire Time-codedistribution option isavailable.
An option isavailable forgatheringstatisticsconcerningdata throughput anddisposition.
AstandardUDP socket connectionisusedto provide a relatively lightweight connection
for the delivery ofdata. Thisstandardinterface mechanismissupportedbyall major
operatingsystems- additionalsoftwaredriversarenotrequired.
A bright andclearfront-paneldisplayshowsthe(userdefinable) routingswitch labelof
each portof each separate switch,together with the activityandstatusof each link.
The hardwareplatform canbereconfiguredsothattheequipment canbeusedfor testing,
monitoring, analyzing, validating, modellingandemulatingany or all the chips,boards,
subsystems,andinstrumentsin a SpaceWirenetwork.
The Flexible SpaceWireRouterisavailablewith the SpaceWireportsmountedonthe front
(see the picture above) or onthe rear panel.
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Equipment Covered by this Manual
Model EtherSpaceLinkfamily:
Flexible SpaceWireRouter
(FSR)- all RG408models
RackmountedSpaceWireroutingswitch.
Fast(100 Mb/s)or Gbit(1000 Mb/s)Ethernet connection.
SpaceWirelinkspeeds up to400 Mb/s.
Eight SpaceWirelinks
Option TC Time-Codedistribution
PSPacket Statistics
Revision history -FSR-RG408Manual
Version 4 November2015
RMAPeel
Repairedseveral itemsofprogram output,andadded
extra examplesandexplanations.
Version3September2013
RMAPeel
Additionofregulatory andsafety information,anduseof
newtext processingtools.
Version2 23 April 2010
BM Cook
Added: RG8R platform, Platformdata, Usageinformation
Version1 14December2006
BM Cook / CPH Walker
Initialversion.
SVNrevision285Mof2015/11/11
Variant a4:RG408
Legalnotice anddisclaimer:Copyright ©20154LinksLimited,all rightsreserved. Thename 4Linksandthe accompanyingdevice areregisteredasa Trademark in
the European Union andinthe UnitedStatesof America. Thename SpaceWirewasoriginatedbythe European Space Agencywhoserightsare acknowledged,
and4Linksmakesnoclaim tothe wordSpaceWirebeinga4Linkstrademark. The informationsuppliedinthisdocument isbelievedtobe accurate atthe date of
issue. 4Linksreservesthe righttochangespecificationsor todiscontinueproductswithoutnotice. 4Linksassumesnoliabilityarising outof the applicationor
useof any informationor product,nor doesit conveyany licence underitspatent rightsor the rightsofothers.Productsfrom 4LinksLimitedarenotdesigned,
intended,authorisedor warrantedtobe suitable for useinlife-supportdevicesor systems. 4LinksLimitedisregisteredinEnglandandWales, with Company
Number3938960. Revisedon:20151111
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Table of Contents
CoverPage............................. 1
Equipment CoveredbythisManual..................... 2
Revision history-FSR-RG408Manual.................... 2
1. GeneralSafety Summary....................... 6
1.1.TermsinthisManual....................... 6
1.2.Symbolsonthe Product. ...................... 6
2.Description ofOperation ....................... 7
2.1.General............................ 7
2.2.Front-PanelDisplay........................ 8
2.2.1.Ethernet information. ..................... 8
2.2.2.SpaceWireinformation..................... 8
2.2.3.Configuration........................ 8
2.3.Getting Started......................... 9
3.Specification ........................... 11
3.1.SpaceWireLinks......................... 11
3.1.1.SpaceWireReceiveperformance.................. 11
3.1.2.SpaceWireTransmitPerformance. ................. 11
3.1.3.SpaceWireConnectors..................... 11
3.2.The Ethernet Connection. ..................... 12
3.2.1.ICMP Echo(ping)Support.................... 12
3.2.2.Full-DuplexEthernet ...................... 12
3.3.DiscoveringaUnit’sSerialNumberandInstalledProduct Options........ 12
3.3.1.The UnitSerialNumberanditsrelationtothe Ethernet MACaddress ...... 12
3.3.2.InstalledProduct Options..................... 12
3.4. The RG408HardwarePlatform .................... 13
3.4.1.Dimensions......................... 13
3.4.2.Environmental Requirements................... 13
3.4.2.1.VentilationRequirements................... 13
3.4.3.Power Supply ........................ 14
3.4.3.1.Supply Voltage. ...................... 14
3.4.3.2.PowerConsumption. .................... 14
3.4.3.3.PowerConnector...................... 14
3.4.3.4. GroundingforElectricalSafety................. 15
3.4.3.5.FuseProtection. ...................... 15
3.4.4. Handlingand Transportation................... 15
3.4.5.RG Platform Firmware. ..................... 16
4. Block Diagram.......................... 17
5. Front Panel Display........................ 18
5.1.Initial(power-up)display...................... 18
5.2. Normal(status)display....................... 18
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6. Front Panel Interactions ....................... 20
6.1.IPaddress ........................... 23
7. FSR Option Details ......................... 24
7.1. OptionTC -TimeCodes...................... 24
7.2. OptionPS-Packet Statistics ..................... 24
8. Software............................. 25
8.1.FilesSuppliedwith the FSR..................... 25
8.2.Controllingthe FSR usingthe FSR Program................ 25
8.3.FSR Program-Usagedescription................... 26
8.3.1.FSR Program-CommandSummary................. 27
8.3.1.1.FSR Program-PortSpecification. ................ 27
8.3.1.2.InitialiseCommand..................... 28
8.3.1.3.Checkingthe FSRstatus.................... 28
8.3.1.4. Route Command...................... 29
8.3.1.5. OptionPS-Packet ActivityCommand............... 30
8.3.1.6.Bypass Command...................... 31
8.3.1.7.LabelCommand...................... 32
8.3.1.8. ModeCommand...................... 32
8.3.1.9.PortStatus Command.................... 32
8.3.1.10. OriginCommand...................... 33
8.3.1.11.Speed Command...................... 33
8.3.1.12. OptionTC -TimeCodes Command............... 33
8.4. Examplesofusingthe FSR program................... 35
8.4.1.Packet Routing Switchesbasedon a SingleUnit............. 35
8.4.1.1.8-portRouting Switch.................... 35
8.4.1.2.Routing Switchwith 4+4 ports.................. 37
8.4.1.3.Routing Switchwith 5+3ports,usingexplicitcommands ......... 39
8.4.2.StaticSwitching, Mux/Demux(Concentrators)and Tunnels......... 41
8.4.2.1.Static switch....................... 41
8.4.2.2. Multiplexer/DemultiplexerUnits(Concentrators)........... 42
8.4.2.3. Mux/Demuxwith Information aboutthe InputPort. .......... 43
8.4.2.4. SpaceWiretunnel...................... 44
8.4.3.LargerConfigurationswith MultipleFSRUnits............. 47
8.4.3.1.25-port Mux/Demux..................... 48
8.4.3.2.25-portRouting Switch.................... 49
8.4.4. Hintsand Tips........................ 52
8.4.4.1.Deadlock......................... 52
8.4.4.2.Uncompleted Commands ................... 52
9. Troubleshooting Guide....................... 53
10.Statement of Volatility ....................... 54
10.1.Removingall information fromaUnit................. 54
10.2.SecurityNotice. ........................ 54
11. Product Limitations andFeatures ................... 54
11.1.Ethernet ........................... 54
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12. RegulatoryInformation ...................... 55
12.1.ElectromagneticCompatibility.................... 55
12.2.ProductSafety......................... 55
12.3.Equipment Recycling....................... 55
12.4. RestrictionofHazardousSubstances.................. 55
13. RG408 Product Drawings...................... 56
13.1.Plan views........................... 56
13.2.Front views.......................... 58
13.3.Rear views.......................... 59
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1. GeneralSafety Summary
Reviewthe followingsafetyprecautionstoavoidinjury andprevent damagetothisproduct or toany
productsconnectedto it.
Toavoidpotentialhazards, usethisproduct only asspecified.
There arenouser-serviceable parts insidethis equipment.
Do not remove covers.
Do not operate with suspectedfailures. Ifyou suspectthatthereisdamagetothisproduct,
referto4Linksfor advice.
Do not operate in wet or damp conditions.
Do not operate in anexplosiveatmosphere.
Keepproduct surfaces cleananddry.
Provide proper ventilation. The air inlet andoutlet onthe rear panelmustnotbeobstructed.
1.1. Terms inthis Manual
CAUTION:
Cautionstatementsidentifyconditionsor practicesthat couldresultindamagetothis
product or toother property.
1.2.Symbols onthe Product
The followingsymbol mayappear onthe product:
CAUTION:
Refertothisusermanualfor safety information.
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2.Description ofOperation
Thissectiondescribesthe main featuresof the Flexible SpaceWireRouter.
The Flexible SpaceWireRouter(FSR)isabletosimulate the Network Layerroutingswitch capabilities
specifiedinthe ECSS-E-ST-50-12C (31st July 2008)SpaceWirestandard.Itimplementsthese functions
in hardwareusing wormholetechniqueswith very low routing latencies. The FSR providesSpaceWire
time-codedistribution. It can also generate statisticsonthe SpaceWiretrafficpassingthrough the
routingswitch,andhence inpartof thenetwork.
The Flexible SpaceWireRouter(FSR) haseight portsandcanbe configured(bythe user) asarangeof
SpaceWireroutingswitches,for example asasingle8-portswitch,astwo independent four-port
switchesor asone three-portswitch together with a five-portswitch.
Theseswitch configurationsmaybe fullyECSS compliant, or theycan offeradditionalcapabilities.
Data concentrators/de-concentrators(multiplexers/de-multiplexers)can alsobe configured. Traffic
monitoringisalsoavailablewith a Packet Statisticsoptionthat summarizesthetraffic from each port
toeach port,reportingstatisticsvia the Ethernet connection.
Usersof the FSRshouldconsult chapter10of the ECSS-E-ST-50-12C SpaceWirestandards document
for an introductiontological- andpath-addressingconcepts.
2.1. General
The FSRhaseight SpaceWireports,each ofwhichholds itsownroutingtablethat isindependent of
thoseinthe other portsof the routingswitch. Thisprovidesagreat dealofflexibility inthe variety of
routingfunctionsthat canbe configured. The ECSS standardsuggeststhatthereshouldonly be a
singleroutingtablein a switch,butseparate onesfor each portprovideextra capabilities,andECSS-
compliance canbeensuredbyprogrammingeach tablewith identicalcontents.
The FSR providesper-portroutingtablesthat coverall 256 possibleinput addresses,ratherthan just
the logicaladdressessuggestedinECSS-E-ST-50-12C. Inthisway, the lowereight ports(which
supportpath-addressing) mayhavetheir ‘hard-wired’behaviourmodifiedunderrouting-table control
toallow a testenvironment tobuilddevicessuch asmultiplexers,de-multiplexersanddata
concentrators. The remainingpath-addressedports(inthe range9to31 inclusive) are available for
specialusewithinthetestenvironment,forinstance forcascadingbetween FSRsinordertoemulate
routerswith moreports. Logicaladdress 254 maybe routedlike any otherlogicaladdress. Logical
address 255,which isreservedinthe SpaceWirestandard,mayalsobe routedlike any otherlogical
address,andthismightbebeneficialinthetestenvironment tocapture andanalyse anypacketsthat
erroneously usethisaddress.
Each inputportof the FSRcanbeprogrammedto prefix the packet that itisrelayingwith itsownport
number, which canbeusedin a cascadedFSR orinthe destination hosttoidentifythe packet orits
route through thenetwork. The headerbyte ateach inputport mayalsobe deletedunderrouting-table
control.
The Flexible SpaceWireRouterisconnectedtoan Ethernet networkandallocatedan IPaddress bythe
user, soitsroutingtablesandotherparameterscanbeset anditsstatusandactivitycountscanbe
monitoredviaalocalorglobalnetwork. The FSRdoesnotprovide a port 0 configuration mechanism.
Also,the FSRdoesnotsupportgroup-adaptive routing.
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2.2. Front-Panel Display
A vacuum fluorescent display(VFD) showsthe statusof the SpaceWirelinksandEthernet connection.
Fig re 2.1: The FSR display
2.2.1. Ethernet information
The statusof the Ethernet andanyreceiveortransmit activityareshown. The current IPaddress of
the routingswitch isshownonthe display.
2.2.2.SpaceWire information
Foreach physical port,thereisaportionof the displaythat shows:
The physical portnumberof the portinthat unit
Alabelthat canbeset bythe usertodefine which portofwhich logicalroutingswitch the
physical portbelongsto
Activityindicatorsfortransmit andreceive.
2.2.3. Configuration
The IPaddress of the routingswitch canbeset bythe userby usingthetoggleswitch adjacent tothe
display.
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2.3. Getting Started
Thissectionprovidesa basicdemonstrationof the FlexibleSpaceWireRouterbeingdriven bya4Links
DiagnosticSpaceWireInterface(DSI).
Connect all eight portsof the DSItothe correspondingportsonthe FSR.Ifyou only havea4-port
DSI,ora2-portDSI,oreven just a 1-portEtherSpaceLinkinterface,these maybe usedinstead,but
all packetsmustberoutedoutof the FSRbackintoactiveportsonthe selectedinterface. The FSR
canbeusedsuccessfully inloopbackmode,returningpacketstojustthe single activeporton an
ESLunit.
Ports:
Ports: 1 2 3 4 5 6 7 8
87654321 Ethernet
FSR
DSI PC
Fig re 2.2:Getting started withthe FSR
Connectthe Ethernet interfacesof the FSRandthe DSItoaEthernet switch ortotwo host
computerports.Ensurethatthe FSRandthe DSIhavebeen assignedIPaddressesthat are
accessible from the host computers(see section6, “Front PanelInteractions”,andthe DSImanual).
Configurethe FSR:
•Initialisethe routingtables;
•Set up the FSRasan 8-portECSS-compliant router;
•Set up an additionalroute,sendingpacketswith a headerbyte of50to port3;
•Enable all eight FSR ports;
•Displaythe routingtable forpacketsarrivingonport1of the FSR.
java -jar FSR.jar 192.168.3.42 initialize
java -jar FSR.jar 192.168.3.42 route 1-8 ecss
java -jar FSR.jar 192.168.3.42 route 1 50=3
java -jar FSR.jar 192.168.3.42 mode 1-8 normal
java -jar FSR.jar 192.168.3.42 route 1
ECSS 8 ports @192.168.3.42
================================
(1) 1 Header --> Port (Physical port)
|1--> 1 (1)
|2--> 2 (2)
|3--> 3 (3)
|4--> 4 (4)
|5--> 5 (5)
|6--> 6 (6)
|7--> 7 (7)
|8--> 8 (8)
|50--> 3 (3)
|.......................................
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Then,startthe SpWIO command-line interfacetothe DSIorESL, and
•Sendapacket with a headerbyte of2to port1of the DSI: thiswill be returned,with the header
removed, viaport2of the FSR.
•Sendapacket with a headerbyte of50to port1of the DSI: thiswill be returned,with the
headerremoved, viaport3of the FSR.
java -jar SpWIO.jar /u 192.168.3.40
//-4Links.SpWIO (v24:20111201/v33:20110920) run on Wed Nov 11 01:45:46 GMT 2015
//-/u 192.168.3.40
//-Attached 192.168.3.40 is DSI-RG40x/8 v1.8 [EI,EW,ER,TT,SO,Z1],
//- 8-ports, link mode is normal at 10.0Mb/s
//-Log file is "SpWIO_20151111_014550.log"
//-Input from "(console)"
@1
2345eop
Tx:@1 #02 #03 #04 #05 EOP
Rx:@2 #03 #04 #05 EOP
50 6 7 8 9 eop
Tx:@1 #32 #06 #07 #08 #09 EOP
Rx:@3 #06 #07 #08 #09 EOP
You maynow trysettingup otherlogicaladdress tableentries,usingother DSItransmitlinks,
changinglinkspeeds,andsoon.
There are furtherexamplesinsection8.3, “FSR Program-Usagedescription”,which shouldbe studied
tounderstandthe full capabilitiesof the FlexibleSpaceWireRouter.
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3.Specification
3.1. SpaceWire Links
The FSR’sSpaceWirelinksconform to ECSS-E-ST-50-12C (31stJuly 2008).
3.1.1. SpaceWire Receive performance
Receivespeeds maybe inthe range from1.2Mb/stomorethan 400 Mb/s(the lowerlimitisset bythe
SpaceWiredisconnecttimeout,nominally of850ns). Theedgeseparationonthe SpaceWiresignal
linesmustbegreaterthan 1.4 ns.
3.1.2.SpaceWire Transmit Performance
Thetransmitspeeds of all of the linkson an FSR unit areset globally tothe samevalue.
Awiderangeofuser-selectedtransmitspeeds isavailable from1Mb/sup to400 Mb/s,with an
increment of1Mb/sorless dependent onthe speedrange,asshowninthe followingtable.
Lower-speed(Mb/s)(increment (Mb/s)) Higher-speed(Mb/s)
40.0(1.0) 400.0
4.0(0.1)39.9
1.00 (0.01)3.99
3.1.3.SpaceWire Connectors
Eight standard9-wayMicro-miniatureD-typeSpaceWiresocket connectorsaremountedeitheronthe
front panel(onRG hardwareplatforms)oronthe rearpanel(onRG-R platforms).
The connectorsarelabelled1to8,fromlefttoright,correspondingtosoftware andAPIports1to8
respectively.
The pinoutof the SpaceWiresocket connectors(lookingfromthe outsideof the EtherSpaceLink unit)
isshownin figure3.1:
9
8
7
6
5
4
3
2
1
Dout+
Sout+
Sin−
Din−
Sout−
Inner shield
Dout−
Sin+
Din+
Fig re 3.1: SpaceWire connector pino t
The female“Din”and“Sin”contactsprovideinputstothe FSR;the female“Dout”and“Sout”contacts
carry outputsignalsfromthe FSR.
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All eight of thesesignalsarebufferedwithinthe FSR using LVDS buffersforeach of the differential
signal pairs. Withinthe FSR,all signalgrounds arebondedtothe chassisof the unit. Noticethatthe
groundpotentialdifferencebetween each device-under-testmustbe heldwithineach receiver’sinput
common-modevoltagerange.
3.2. The Ethernet Connection
An RJ45socket,housedin an SFPmodulesituatedonthe front panel,supports1000 Mb/s(1000BaseT)
or100 Mb/s(100BaseT)full-duplexEthernet connectionsovertwisted-pair cable. The interface hasan
auto-crossoverfunction,allowingdirect connectionof the EtherSpaceLink unittoa computerortoan
Ethernet huborswitch,usingeitherastandardora crossovercable.
3.2.1. ICMP Echo (ping)Support
The FSR will respondtoan ICMPechorequest - asprovidedonmany operatingsystemsvia the ping
command. Thiscan provide a simpletesttocheckthatthe unitisaccessibleonthenetwork.
3.2.2. Full-DuplexEthernet
Only full-duplexEthernet connectionsaresupported.
3.3.Discovering aUnit’sSerial Number andInstalledProduct Options
Aunit’sserialnumber maybe readoff itsfront paneldisplayatboottime. Alternatively,clickthe
toggleswitch upwards ordownwards oncetoviewthe serialnumberof a runningunit.
3.3.1. The UnitSerial Number and its relationto the Ethernet MACaddress
4LinksEtherSpaceLink unitserialnumbersareof the form Annn (e.g. A202).
The least-significant bitsof the Ethernet MediaAccess Control (MAC)address of a unit aredirectly
relatedtoitsserialnumber:
Serial numbersMACaddresses
A1toA4095 00-50-C2-21-20-01to00-50-C2-21-2F-FF
3.3.2.InstalledProduct Options
When viewingthe serialnumberof a runningunit,asabove,the installedproduct optionsarelistedas
two-characteracronymswithinsquarebrackets.
Forthe illustrationin figure6.1,the optionsarePSandTC. See section7, “FSROptionDetails”,for
furtherinformationonthe availableFSR options.
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3.4. The RG408 Hardware Platform
The RG408hardwareplatform issuppliedwith eight SpaceWireportsandwithfront orrear mounted
SpaceWire connectors(RG408orRG408-R,respectively).
The hardwareisoptionally availablewith SMA connectorsforexternalsynchronization(onthe
RG408-S). Theseenableinter-boxtime-tagsynchronization(onthe DSI, SRR,MSRandATI), aswell as
externaltriggers(on a DSI).
The -Land-M suffixesindicate the FPGAsize in an RG408unit. The smallerFPGAissuppliedin
RG408-Lunits. An ExtraResources“-M”option(onthe RG408-M)suppliesgreaterprocessingand
memoryfacilities. Thisprovidesfor morethan fourportson a DSI,fordoublethe recordingbuffer
memory on an MSR,andfor moreportsorlargerRMAPmemorieson an SRR.
The unitisintendedtobe usedin a 19-inch rackandis1Uhigh.
3.4.1. Dimensions
Dimension MetricImperial
Maximumheight 45mm 1.75 inches
Maximumwidth 483 mm 19inches
Maximumdepth
(overall)
335mm (405mm with matedpower
connector)
13.25inches(16incheswith mated
powerconnector)
Maximumdepth
(insiderack)
290 mm (360 mm with matedpower
connector)
11.5inches(14.25incheswith mated
powerconnector)
Weight Approximately 2.8kgApproximately 6 lb
Heat output
(powerconsumption)
Approximately 25Watts
(depends onthe installedfunctionsandactivity levels)
3.4.2. Environmental Requirements
ParameterRequirement
OperatingTemperature5°C to35°C
HumidityNon-condensinghumidityenvironments
MaximumOperatingAltitude2,000 m
PollutionDegree 2;Indooruseonly
3.4.2.1. Ventilation Requirements
The 4LinksRG platform productsrequireunobstructedairflow totheir rear ventilationgrillestoallow
the internalfanstooperate efficiently andthustoallow operation across thetemperaturerange
specifiedinsection3.4.2, “Environmental Requirements”,above.
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3.4.3. Power Supply
Powerisprovidedbyanexternalsupply.
3.4.3.1. Supply Voltage
The powerinputisdesignedtoacceptDC22 to50V,with eitherpolarity.
The powerinput circuitisisolatedfromboth the restof the circuit andfromtheequipment case. The
potentialdifferencebetween the powersource andtheequipment case(functionalground) mustnot
exceed50V. A 1.2MΩresistorisfittedinternally to prevent thebuild-up of a staticpotentialdifference
between the powerinput andthe case.
Note:Thisinput haslimitedsurgeprotection andmustbe connectedtoasurge-free supply. The
AC/DC adaptersuppliedwith the unit containssurgeprotection at itsmains-voltageinput andshould
be usedwheresurgeprotectionisrequired.
CAUTION:
The AC/DC adaptersuppliedwith the unitprovidesmainsisolationto UL60950/
EN60950.If an alternativepowersource isused,itmust have anequivalent rating.
3.4.3.2. PowerConsumption
Thetotal powerconsumptiondepends onthenumberof activeportsandoptions: up toaround25W.
3.4.3.3. PowerConnector
Powerissuppliedusingarear-panel-mounted5-way240°DIN connectorwith a screw-locking
mechanism.
Fig re 3.2: The4LinksRG Platform power connector
Pins Function
1,2Power(eitherpolarity)
3Functionalground(connectedtocase)
4,5 Return
The connectortypeisaBinder680-series5-pin240°chassisplug. A compatiblematingconnectoris
Binderpartnumber 09-0314-00-05.
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3.4.3.4. GroundingforElectricalSafety
CAUTION:
The chassismustbemaintainedat a safe potential.
Theelectricalgroundforthe circuitsdrivingthe SpaceWire connectorsignalsis
connectedtothe chassis.
A functionalgroundconnectionisprovidedbythe mainspowersupply that isshipped
with the unit.
3.4.3.5. Fuse Protection
Each powerinputline includesan internalfuse.
One orbothfusesmaybe inferredtohave failedif thereisappropriate poweratthe connectorpinsand
a complete lack ofinformationonthe front-paneldisplay.
Fuse failurewill only result fromseriouscomponent failureorfromequipment misuse. A complete
check-outisrequiredbeforereplacingthese fuses.
Intheevent ofsuspectedfuse failure,please contact 4Links.
CAUTION:
There arenouser-serviceablepartsinsidethisequipment.
3.4.4. Handling andTransportation
The 4LinksRG platform productsaredesignedtobe robust,andare capableof beingtransportedto
supportSpaceWiretesting.
Unitsshouldbe packagedinprotective foamorsimilar materialto prevent themfrombeingsubjected
toexcessiveshocksduringhandling.
Unitsshouldnotbesubjectedtocondensation; transferringthemdirectly froma coldshipping
containertoamoistwarm laboratoryatmosphereisnotrecommended.
The micro-miniatureD-typeSpaceWireplugsandsocketsare fragile. Connectionsshouldbe made
with care. If the unitsarein anenvironment wheretheyare frequently re-connected,consideration
shouldbe given tothe useofsacrificialconnectorsoranexternalrouter(such asthe 4LinksFlexible
SpaceWireRouter).
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3.4.5. RG Platform Firmware
Firmware forthe 4LinksRG platform productsissuppliedon CompactFlashmemorycards. These
cards maybe hot-swapped-i.e. pluggedandunpluggedfromaliveunit.
RG Platform unitsboot froman installedmemorycardwhen theyarepoweredup,aswell aswhen
theydetectthat a memorycardhasbeen newly-inserted.Ejectingandthen re-insertingamemory
cardistherefore an acceptablemethodofre-bootingaunit.
Amemorycardmaybe ejectedbypressingtheejectbuttononthe right-handsideof the cardslotwith
a non-conductivedevice.
CAUTION:
Donot attempttoremovethe memorycardusinga conductiveobject(e.g. a pen ora
screwdriver).
Memorycards are configuredforaparticular4Linkshardwareplatform, andareonly intendedforuse
with that unit. Ifone attemptstoboota4Linksunitwith a memorycardthat wasbuilt foranother
unit,orwith a non-4Linksmemorycard,then thebootself-testdisplaywill displaya failuremessage at
the fifth step-which indicatesthatthe cardisunsuitable forthisunit.
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4. Block Diagram
Theelementsthat makeup an EtherSpaceLinkfamily unit areshownin figure 4.1.
RJ45 Ethernet
22−50V input isolated
power supply
FPGA board, containing:
System health− User interface controller
Front−panel display
memory card
connector (in
SFP module)
Micro−D
SpaceWire
connectors
monitoring and
thermal control
Removable
Front−panel switch
− Ethernet TCP/IP interface
− SpaceWire Link interfaces
− Transmit and receive buffers
SMA
synchronisation
connectors
(−S units only)
Fig re4.1: EtherSpaceLink family nit block diagram
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5. Front Panel Display
5.1. Initial (power-up) display
The front-paneldisplaywill initially show the unitproceedingthroughself-test andconfiguration,
leadingaftera fewseconds toa normaloperationaldisplay.
Fig re 5.1: TheRG408 power-pdisplay
Failureduringthe initialfourstagesof the self-testusually indicatesa hardwareproblem.Failure at
the fifth stagesuggestsa faultwith the contentsof the memorycard;memorycards are configuredfor
specific 4Linksunits,somakesurethat you havepluggedthe correct cardintothisunit.
5.2. Normal (status) display
Innormaloperation,the displayshowsthe state of the SpaceWire andEthernet connectionsandany
activity ontheseinterfaces.
Fig re 5.2: The FSR stat sdisplay
The upperline of the displayshowsthe productname andEthernet information:
The IPaddress of thisunit;
Ethernet status:
∗The SFPmodule(see section3.2, “The Ethernet Connection”) isnotpresent;
XThe SFPmoduleispresent,butthe Ethernet cableisnot connected;
“”(i.e. blank):The Ethernet isconnected,butthere hasbeen norecent transmitorreceive
activity;
RData isbeingreceivedfromEthernet;
TData isbeingtransmittedto Ethernet.
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The lowerpartof the displayshowsSpaceWireinformationineight sections,one foreach port:
Thetop left cornerof each sectionshowsitsphysical portnumberinthe FSR;
The centreline of each sectionshowsthe SpaceWireport’slinkstatusandactivity:
DsblThe linkisdisabled;
RData hasrecently been received;
TData hasrecently been transmitted;
rA time-code hasrecently been received;
t A time-code hasrecently been transmitted;
Each of thesestatusindication charactersisdisplayedforashortlength of timetomakethem
visibletothe humaneye.
Thebottomline of each sectionshowsauser-settablelabelforthat routingswitch port,which
maybe usedtoindicate the switch that portbelongsto(if there aremultipleswitchesconfigured
inthe unit,orif the logical portsareshuffledwith respecttothe physical ports), orwhich port
thisrepresentsin a largercascadedswitch,oritmight simply labelthe connectedSpaceWire
device.
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6. Front Panel Interactions
A centre-biasedthree-positiontoggleswitch islocatedtothe left of the front paneldisplay. Thisis
usedtoshow the unit’sserialNumberandoptions,andtoset the unit’sIPaddress.
Settingsarestoredinnon-volatilememoryandarerestoredwhen the unitisnextpowered-up.
Asinglemovement of the switch,eitherupwards ordownwards,entersthe firststep of the user
interactionwherethe unit’sserialnumberandoptionlistisdisplayed.Itispossibletoreturntothe
normaldisplaybe movingthe switch a secondtimeinthe samedirection,ortoinspect and/orset
valuesbymovingthe switch a secondtimeinthe opposite direction. Doingnothingwill,aftera few
seconds,causethe displaytoreturntonormal.
Messagesonthe screen indicate theeffect ofmovingthe switch upwards (top line,left side)or
downwards (bottomline,left side).
Afterpushingthe switch down,wesee (forthe FSR with serialnumberA260version0.2)that itis
connectedtoa1Gb/sEthernet andhasoptionsTC andPS:
Fig re 6.1: The FSR serial n mber and config ration display
The chartbelow showshow tonavigate the settingsmenus.
The current state isshown asa boxwith three sections. Thetop sectionshowsalabelthat indicates
theeffect(if any)ofpushingthe switch up. The middlesectiondescribeswhat isdisplayed. The
bottomsectionshowsalabelthat indicatestheeffect(if any)ofpushingthe switch down.
Display
"UP" label
"DOWN" label
Fig re 6.2:Front panelnavigation
The state isenteredviaan arrowedline intothetop orthe sideof thebox. A line fromthetop section
tracesflow tothenextstate when the switch ispushedup. A line fromthebottomsectiontracesflow
tothenextstate when the switch ispusheddown. A line fromthe middlesectionshowsthe flowwhen
the switch isnotpressedanda timeoutperiod(ofseveralseconds)haselapsed.
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