Gems iRGS232 User manual

GEMS Navigation Limited
Address:Room301,HuaChuangDaBuilding,CuizhuRd,46District,Bao’an,Shenzhen,China.
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Document Number 120229 Rev 003 2017-03-
03 Page 1 / 16
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iRGS232
IntelligentGPSsplitter

 AutomaticorManualAntennasSwitchingCapability;
 Gain:0～30dBstepadjustable,1dBstep（Optional）;
 Antennastatusmonitoringandwarning;
 Sendalarmmail;
 OutputPortsstatusmonitoringandalarmfunction(Optional);
 ShowinformationofGPS/Beidouintime;
 48VDC,12VDCdualpowersupport;
 InlargeindoorcoverageinGPSapplication;
 HighIsolations>30dB
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www.gemsNAV.com

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Document Number 120229 Rev 003 2017-03-03
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Description
TheiRGS232GPSSplitterisadual‐input,thirtytwo‐outputGPSdevice.ThedualinputportsconnecttwoGPS
receiveantennas.Theoutputsportsgrantupto32GPSreceivessignalaccessatonetime.
WhenenteringtheGNSSsignalsystemmanagementterminaltosettheIP,thesoftwarecandisplaythepowerof
eachport,thenumberofGPSvisiblesatellitesandthevalueofC/No,thenumberofBeidouvisiblesatellitesandthe
valueofC/No.
ThisproducttypicallyfindsapplicationwhereaninputfromanactiveGPSroofantennaissplitevenlybetween
thirtytworeceivingGPSunits.UsuallytheiRGS232isconfiguredwithan12Vinput(‐48Vtelecompowerinputalso
available).Inthisscenario,theiRGS232canbeconfiguredtopassDCfromanRFoutputtotheantennainputportin
ordertopoweranactiveGPSantennaonthatport.Outputports(J2‐J32)wouldfeaturea200OhmDCloadtosimulate
anantennaDCcurrentdrawforanyreceiverconnectedtothoseports.
Redundancyisacquiredthroughtheuseofaprimaryantennaandabackupantenna.TheabilityoftheiRGS232to
switchantennasallowsallconnectedGPSdevicestoremainfullyfunctionalintheeventofanantennafailure.The
iRGS232canmanuallyorautomaticallyswitchtheantennaport.FaultsareindicatedonthefrontpanelLEDandstatus
viaaDB9interface.
WithintheiRGS232isanantennahealthsensorandanembeddedantennaswitch.Thesensormonitorsthehealth
oftheprimaryantennaconnectedtothesplitter.Basedontheinformationprovidedbythesensor,thesplitterwill
automaticallyswitchtothesecondaryantennaintheeventofafailurewiththeprimaryantenna.
Ifthefailureintheprimaryantennaisresolved,thesplitterwillautomaticallyswitchbacktotheprimary.The
embeddedswitchhasbeendesignedsoitcanbecontrolledexternallyviaaDB9portoranexternaltoggleswitchthat
canoverridetheinternalautomaticswitchmechanism.

Antennaselectiondescription
Poweredhardware,thesoftwarebegantocalculatethesignalstrengthofantenna1andantenna2,after
comparingtheintensityofthetwoinputsignalsautomaticallyselectthehighsignalintensityoftheantennainput.
Whentwoinputantennasstrengthlessthan34dB,accordingtothenumberofswitchesandtheswitchingfrequencyof
switchingcontinuesuntiltheswitchingfrequencygreaterthan140times.Whenstartedwithagoodchoiceofantenna,
thesystemcontinuestosignaldetection,whenthesignalstrengthistoolowortheantennafailure,theautomatic
startingantennaselectionlogic.Holdingtheantenna1priority,itcandelaytheservicelifeoftheequipment.
Note:
Switchingtimes:Eachantennaswitchonceswitchesthenumberofplus1time.
Switchingfrequency:Switchthenumberoftimeslessthantentimes,thenswitchonceeveryminute.
Switchingtimesgreaterthan10timeslessthan140times,everytenminutestoswitchonce.
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Document Number 120229 Rev 003 2017-03-03
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Specifications
ElectricalSpecifications,OperatingTemperature‐20to65℃；StorageTemperature‐30to80℃.
Parameter Conditions Min Typ Max Units
Freq. Range Ant – Any Port 1.1 1.7 GHz
In &Out Imped. In, all output ports 50 Ω
Gain
0dB
In- Output ports, Unused Ports - 50Ω terminations
-1 0 1
dB
10dB 9 10 11
Input SWR All Ports- 50Ω reference 2.0:1 -
Output SWR All Ports- 50Ω reference 2.0:1 -
Nois Figure
(Amplified) Ant- Any Port, Unused Ports-50Ω terminations 3 dB
Gain Flatness
(Amplified) L1-L2,Ant- Any Port, Unused Ports-50 terminations 3 dB
Amplitude Balance Ant- Any Port, Unused Ports-50Ω terminations 0.5 dB
Phase Balance Ant- Any Port, Unused Ports-50Ω terminations 1.0 deg
Group Delay Flatness 1 ns
Isolation
Amplified
Adjacent Ports: In - 50Ω terminations 30
dB
Opposite Ports: In – 50Ω terminations 34
Gain:10dB
Adjacent Ports: In - 50Ω terminations 30
Opposite Ports: In - 50Ω terminations 34
AC IN Wall Mount transformer 230 VAC
DC IN
DC Block, All ports with a 200Ω Load 14
VDC
PASS DC, Amplified 3 16
PASS DC, Passive 16
Powered, （12V） 11.5 12 14
Powered, （48V） 43 48 58 Optional
Device Current 80 mA
Current
12V DC IN, PASS DC inputs ，Block DC Outputs 500 mA
12V DC IN, PASS DC inputs ，PASS DC Outputs 2000 mA
48V DC IN, PASS DC inputs ，Block DC Outputs 120 mA
48V DC IN, PASS DC inputs ，PASS DC Outputs 500 mA
Max RF Input
(Amplified) Max RF input without damage 0 dBm
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Document Number 120229 Rev 003 2017-03-03
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Theadjacentportandtheoppositeportreferto:

Type(Depending on the placement of the
internal power divider)
Port
Adjacent Port
J1、J9、J3、J11
J2、J4、J10、J12
J17、J25、J19、J27
J18、J26、J20、J28
J5、J13、J7、J15
J6、J14、J8、J16
J21、J29、J23、J31
J22、J30、J24、J32
Opposite Port Which is not adjacent to the port is the opposite port
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Document Number 120229 Rev 003 2017-03-03
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PerformanceIndex
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Document Number 120229 Rev 003 2017-03-03
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1. Usermanagement
File—>UserManagement
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Document Number 120229 Rev 003 2017-03-03
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2. SetIP
Set—>IP Set


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Document Number 120229 Rev 003 2017-03-03
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Settingsteps

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IPsetsuccessfully,thenetworkserialportcanbeusednormally.
3. Antennaselectionandstatusdisplay
Inthebelowandtotherightoftheantennasselectionbarforactiveantennaselectionandstate,readthe"auto"
selectedautomaticallysignalthebetterantennaaccess,Ant1isspecifiedusingthewire1access,ant2"forthe
specifiedusingantenna2access,clickthe"read"readantennacanbeseenwhenusingtheantennapattern.
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Readantennapattern
beingused
Setantennamode
1. Click“Search”,IPaddress
willbedisplayed
2. CanseetheIPdisplay,doubleclickon
theIP,andthenIPwillautomatically
fillinthe"AddressIP"column
3.FillintheIPaddress(step2
automaticallyfillout)4. Click"Settings"andrestart
thesoftwaretomakesure
yourIPPCanddeviceIPare
inthesameIPrange.

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Document Number 120229 Rev 003 2017-03-03
Page 10 / 16
Activeantennamodeselect:Select"AUTO"orotherantennapatternsClick"Set"
promptsetupissuccessful,whiletheunit'sfrontpanelLCDdisplaystheantennapatternusedinthiscase,ifyou
select"AUTO"modetheunit'sfrontpanel"ANT1"brightbluelight,select"ANT1"modeis"ANT1"lightsupin
blue,select"ANT2"mode"ANT2"lightsupinblue,theactiveantennaselectionmodecanalsobeoperatedinthe
frontpanelbuttons,pressthebutton"AntSwitch",canrotatechoosefromthreeantennamode,synchronous
displaymodeantennadeviceusedinthiscaseontheLCDscreen.
FrontPannel:



"AUTO"mode:automaticselectionmodefortheantennawhenswitchingtothismodewillautomaticallyturn
accessantennas1and2comparethesignalstrengthandthenselectabettersignalantennaaccess.Inthismode
thedeviceautomaticallyswitchestheantennawillbedelayed.

Displayscreen:


GPSStatus:Lighton,Locked;Lightoff,GPSLost
Alarm:Flashingredlightindicatesanantennafailure.(The
antennaswereo
p
enedorshorted
)

ANT1:Lighton,Antenna1isselected
ANT2:Lighton,Antenna2isselected
Antennamodeselection:Auto,ANT1,ANT2
Ant:Auto, Antennaautomaticswitchingmode;ANT1
orANT2specifiedantennaaccessmode
COM:OK,Networkserialportconnectedtonormal;
NG, Networkserialconnectionabnormal
GPSandBEIDOUinformationinterface