Gems GT-RK1 User manual

Doc.No.1103 Rev.013 2016-08-16
Tel: [phone] Fax: [phone]-816 Email: [e-mail]
GEMS NAVIGATION LIMITED Room301,HuaChuangDaBuilding,CuizhuRd,46District,Bao’an,Shenzhen,China.
GT-RK1
 GPS signal indoor coverage system
 Installation and user guide
WWW.GEMSNAV.COM
GEMS NAVIGATION LIMITED

Doc.No.1103 Rev.013 2016-08-16
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GT-RK1
 System signal: GPS L1(1575MHz);
 This is single point solution, covers 5-20 meters at radius(by increasing the amplifier
according to methods and under field conditions, building height and other certain
conditions reach a radius of 20 meters).
Note: Single point means one antenna be used to transmitting GPS signal.

Doc.No.1103 Rev.013 2016-08-16
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System Schematic
l
1. GPSAntenna(TIMING4000)beinstalledonroofofthebuilding;
2. CableassemblyRG8fixedalongtheoutwall,oneterminatorconnectsTIMING4000,theanotherto
protectorattheappropriateplace.Insomespecialenvironment,selectPEorPVCmaterialplasticpipeto
protectthecableassemblyisquitesensible;
3. Protector,AmplifierandGaincontrollerarefixedonthewallindoor;
4. CableassemblyKSR240isfixedalongtheceilingoftheoperatingplace;
5. AntennaGTA10befixedontheceilingorcrossbeam.
6. Accordingtotheactualenvironment,youcanadjustpositionsofsomeparts,whichcanmakeyouthe
adjust,changeandoverhaulmoreeasily.
GPS L1
GPS Antenna(TIMING4000)
Antenna
(
GTA10
)
Gain Controller(GA30-V)
KSR240
,
10M
Protector
INDOOR
GPS device
GPS L1 signal
RG8,30M

Doc.No.1103 Rev.013 2016-08-16
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Quality Commitment
Allproductshavebeenstrictlyinspected,allarequalifiedproducts.
Wepromiseone‐yearguarantyand5‐yearavailable.
Underwarranty,productsgonewrongwhichbeidentifiednotbehumanfactor,canbereplacedfreeor
repaired.FreightbechargedbyGEMS.
Return Policy
OurproductanditspackaginghaveLOGOandSerial‐number,youshouldnottearupthem,aswewill
dependonthemtodealwiththereturnproduct.
Wehaven’trecruitagencies,salesandafterservicebetookchargedbyGEMS.Pleasepayattention.
Service phone:[phone]or email to:[email protected], We will response in 24 hours.

Doc.No.1103 Rev.013 2016-08-16
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Contents
1 Functional Description ............................................................................................................................................................... 6
2 Typical Application .................................................................................................................................................................... 6
3 Standard Configurations: ........................................................................................................................................................... 6
4．Topological (Under standard configuration) ....................................................................................................................... 7
5. Kits include ............................................................................................................................................................................... 8
5.1 Gain Controller GA30-V ................................................................................................................................................ 8
5.1.1 Function: .............................................................................................................................................................. 8
5.1.2 Specification ........................................................................................................................................................ 9
5. 2 Antenna .................................................................................................................................................................... 10
5.2.1 GPS antenna（Receiving antenna）: TIMING 4000 ..................................................................................... 10
5.2.2 Transmiting antenna:GTA 10 ......................................................................................................................... 11
5.3 Cable Assembly .................................................................................................................................................... 11
5.3.1RG8(KSR400) ..................................................................................................................................................... 11
5.3.2KSR240 .............................................................................................................................................................. 11
5.3.3 Select Connector ................................................................................................................................................ 12
6. Installation guide .................................................................................................................................................................... 12
6.1 GPS Antenna TIMING 4000 Installation ..................................................................................................................... 13
6.1.1 Lighting Protection .................................................................................................................................................... 13
6.1.2 Installation steps of GPS Antenna: .................................................................................................................... 14
6.2Installation to Protector and Gain Controller ................................................................................................................. 15
6.3 Fixing of GTA10 ........................................................................................................................................................... 15
7.System power-supply control .................................................................................................................................................. 16
8.Typical faults and solutions ..................................................................................................................................................... 16


Doc.No.1103 Rev.013 2016-08-16
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1 Functional Description
GT‐RK1isarepeateroperatesbyreceivingGPSsatellitesignalswithanantennalocatedoutsidethe
buildingandre‐radiatingthesignalsintotheindoorareaorcoveredspacewheresatellitesignalcannot
reach.
GT‐RK1isasinglepointGPSrepeater,onetransmittingantennatransmitGPSL1signal.
Ifneedextendthesystem,youcanapplymulti‐systemreceivingantennaandsendingantenna,which
cansupportmulti‐system,multi‐wavebandsatellitesignalreceiveandtransmit,soastocoversatellite
signalindoor.
Other documents, log in website: ： www.gemsnav.com ,or contact:[e-mail], 或
or call the technical service: 86-755-29644311 。
2 Typical Application
 For GPS products testing
Fortestingthecell‐phonewithGPS,PND,carnavigators,tracker,surveyproducts,etc.
 For the purpose of GPS signal covering
Carparks,lab,aviationmanufacturinghangar,tradeshows,Emergency‐,safetyvehicles,public
transportationetc.
3 Standard Configurations:
 GainController:GA30‐V,1 ea;
 GPSAntenna:TIMING4000,1ea;
 CableAssembly:RG8,30M,1ea;
 CableAssembly:KSR240,10M,1ea;
 Antenna:GTA10,1ea.
 Lightning‐protector:1ea;

Doc.No.1103 Rev.013 2016-08-16
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4．Topological (Under standard configuration)
GPS Signal
Radius:5M-20M
GPSAntenna:TIMING4000（receiving）
Lightning‐protector
Gain‐controller:GA30‐V
Antenna:GTA10(transmit)
RG8,30M

KSR240,10M
Top-level outdoor
Workshop(Indoor)

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5. Kits include
5.1 Gain Controller GA30-V
5.1.1 Function:
Usedtoadjustsystemgain,0‐30dB
adjustable,youcancontrolwhenneeded.
(withAC220/9Vpoweradapter,supplypower
tosystemanditself.)
① ② areinput/output,connecttocable
assembly,Nfemale.
Canbecustomized.
③ this knob can control gain value.
Anticlockwise: lower
Clockwise: higher
When finished the installation, you can adjust the
knob, usually from high to low, the best position is when
your receiver’s SNR begin to weak.

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5.1.2 Specification
ParameterConditionsMinTypMaxUnits
Freq.RangeIn‐Outputports,50Ω1.2 1.7GHz
In&OutImped.In,alloutputports50Ω
Gain1227MHz
In‐Outputports
‐45dBmInputLevel
283032
dB
1575MHz 283032
Adjustable
gain
1227MHz Max 29 30 31
Min -4 -2 0
1575MHz Max 29 30 31
Min -2 0 1
InputSWR2.5:1‐
OutputSWR2.5:1‐
NoisFigure2dB
GainFlatness3dB
Currentbalance0.5dB
PhaseBalance1.0deg
GroupDelayFlatness1ns
Devicecurrent 16 mA
DC IN The DC input on the input or output
port 3 5 16 VDC
AC supply220AC
MaxRFInputMaximumlosslessRFinput  0dBm
Operating temperature -40 85 ℃

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5. 2 Antenna
5.2.1 GPS antenna（Receiving antenna）: TIMING 4000
Mechanical characteristic:
RadomematerialABS
Size[mm]Ø112×205
Weight[Kg]1.42(includingGPSclamp)
OperationTemperature[℃]‐40~+70
RepositionTemperature[℃]‐55~+75
OperatingHumidity[%]95
Operatingwindspeed[Km/h]135
RaterWindSpeed[Km/h]200
CircumstanceOutdoor
Function:ReceivesatellitesignalGPSL1;
Electricalparameter:
Frequency[MHz] 1575.42±5
Gain[dBi] 38±2(LNAincluded)
PolarizationCircularpolarization
Axialratio[dB] ＜5
3dBbeamwidth(°) 110±10
FronttoBackRario[dB]＞10
DCVoltage[V]4~6
DCCurrent[mA]≤45
ConnectorN(Female)
FrequencyRange(MHz)1575.42±5
Gain(dB)34±2
Flatnessinbandwidth(dB)＜1(1575.42±1.023MHz)
＜2(1575.42±5MHz)
NoiseFigure(dB)≤2.7
Out‐of‐BandRejection(dBc)12(1575±30MHz)
35(1575±50MHz)
70(1575±100MHz)
VSWRS11≤2.5dB(Input)；S22≤2.5dB(Output)
DCVoltage(V)4~6
DCCurrent(mA)≤45
1dBthedotoftheoutput(dBm)≥0
Anti‐SurgePerformanceAccordingGB/T17626.5‐1999;
idtIEC61000‐4‐5:1995standard
LNASpecifications: