GS Instech GRS-1923DC-SPR Repeater User Manual

GS Instruments Co., Ltd. Repeater Users Manual

Users Manual

Sprint User Manual 3G Indoor Repeater 1/23 3G Indoor Repeater GRS-1923D-SPR User Manual January, 2009 Version 0.1
Sprint User Manual 3G Indoor Repeater 2/23 - INDEX - 1. SUMMARY................................................................................... 3 2. SYSTEM CONFIGURATION ......................................................... 4 2.1 GSR-1923D-SPR Service Organization ......................................................4 2.2 System Design and Operation....................................................................5 3. SPECIFICATIONS ..................................................................... 11 3.1 System Specifications(Applicable to both Uplink & Downlink)................11 3.2 Electrical and Environmental Specifications............................................12 3.3 Functions .................................................................................................12 4. SET UP...................................................................................... 15 4.1 System Set up..........................................................................................15 4.2 Troubleshooting.......................................................................................19
Sprint User Manual 3G Indoor Repeater 3/23 1. SUMMARY GRS-1923D-SPR is an analog RF repeater, which improves PCS network. GRS-1923D-SPR receives RF signal from BTS and transmits it to the blanked and shadowed area, thus providing and improving voice and image data services. GRS-1923D-SPR’s goal is to support BTS’s functions proportionately. GRS-1923D-SPR communicates with BTS wirelessly, thus saving additional costs for its maintenance. GRS-1923D-SPR consists of RF/IF part module, Digital Filter module, and I/O & Control module divisions, which are supplied with Alarm LED, thus providing quick and easy maintenance and troubleshooting of the repeater. This manual describes in general structure of GRS-1923D-SPR, its application, maintenance and troubleshooting, installation and operation etc. -.Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. -.Warning: Exposure to Radio Frequency Radiation The radiated output power of this device is far below the FCC radio frequency exposure limits. Nevertheless, the device should be used in such a manner that the potential for human contact during normal operation is minimized. In order to avoid the possibility of exceeding the FCC radio frequency exposure limits, human proximity to the antenna should not be less than 20cm during normal operation. The gain of the antenna for pcs Band must not exceed 12 dBi. Abbreviation PCS : Personal Communication System RF: Radio Frequency BTS: Base Transceiver Station IF: Intermediate Frequency I/O : Input/Output
Sprint User Manual 3G Indoor Repeater 4/23 2. System Configuration 2.1 GRS-1923D-SPR Service Organization GRS-1923D-SPR decreases blanked and shadowed areas and extends cell coverage by re-transmitting signal. The signal is received from BTS via Antenna directly, thus excluding additional expenses for signal transmission (like cabling). Service organization of CDMA In-building RF repeater is shown at the picture below. Donor Antenna is directed to BTS, and being divided at Service Antennas are installed in the building and parking place. Pass Loss should be taken into consideration while dividing and cabling. <Pic.1> US PCS 1900 Service Organization
Sprint User Manual 3G Indoor Repeater 5/23 2.2 System Design and Operation 2.2.1 System Design <Pic.2> GRS-1923D-SPR Repeater
Sprint User Manual 3G Indoor Repeater 6/23 <Pic.3> Internal Design NO DESCRIPTION ① ANTENNA PORT ② PSU MODULE (RS-35-3.3) ③ PSU MODULE (RS-100-9) ④ CONVERTER MODULE ⑤ AMP MODULE ⑥ NMS BOARD ⑦ DIGITAL FILTER ⑧ ETHERNET BOARD
Sprint User Manual 3G Indoor Repeater 7/23 <Pic.4> Outside Port Design NO DESCRIPTION ① SERVER ANT PORT ② DONOR ANT PORT ③ AC POWER PORT ④ CLI MONITOR PORT ⑤ ETHERNET PORT
Sprint User Manual 3G Indoor Repeater 8/23 2.2.2 Downlink Path Downlink and Uplink Gain Budgets have similar structure. In case of Downlink Path, RF signal is received from Donor Antenna, and through FWD LNA division, then the signal is transferred to IF division, where desirable Band is selected by Digital Filter. Selected Band is transferred to RF division again, and through FWD PAM, after that the signal is transmitted to User through Server Antenna. Two attenuators use for ALC and NF compensation. ALC attenuation range is 20dB, and NF attenuation range is 10dB in Digital Step Attenuator. <Pic.5> Downlink Block Diagram
Sprint User Manual 3G Indoor Repeater 9/23 2.2.3 Uplink Path Uplink Path is similar in structure to Downlink Path. In case of Downlink Path, RF signal is received from Server Antenna, and through RVS LNA division, then the signal is transferred to IF division, where desirable Band is selected by Digital Filter. Selected Band is transferred to RF division again, and through RVS PAM, after that the signal is transmitted to BTS through Donor Antenna. Two attenuators use for ALC and NF compensation. ALC attenuation range is 20dB, and NF attenuation range is 10dB in Digital Step Attenuator. <Pic.6> Uplink Block Diagram
Sprint User Manual 3G Indoor Repeater 10/23 2.2.4 US PCS Frequency Selection <Pic.7> 1900MHz PCS Band Structure GRS-1923D-SPR has 5MHz, 10MHz, 15MHz, 20MHz Paths in IF division, so any of these bandwidths can be chosen for providing service. ITEM BANDWIDTH NOTE 5MHz 10MHz 15MHz 20MHz 5MHz + 5MHz 5MHz + 5MHz + 5MHz 10MHz + 5MHz Band Select 15MHz + 5MHz Any of these bandwidths from A to E can be chosen
Sprint User Manual 3G Indoor Repeater 11/23 3. SPECIFICATIONS 3.1 System Specifications(Applicable to both Uplink & Downlink) ITEM SPECIFICATION REMARK Transmit Power 23dBm ± 2.0dBm Downlink 1930MHz ~ 1975MHz Frequency Range Uplink 1850MHz ~ 1895MHz Gain Range 60dB ~ 80dB DL/UL both Roll Off ≥ 50dBc @ F(edge)±1MHz VSWR 1.5 : 1 Delay 8us In Band Spurious Emission @ Fc±885kHz ≥ 45dBc marker to marker 29dB @ Fc±885kHz ≥ -45dBc marker to marker 29dB @ Fc±1.98MHz ≥ -55dBc marker to marker 39dB Out band Spurious Emission @ Fc±2.25MHz < -13dBm RBW = 1MHz Flatness 3.0dB channel power measurement 5MHz 5+5MHz or 10MHz 5+5+5MHz or 10+5MHz or 15MHz Band Select 15+5MHz or 20MHz Non-contiguous Band (Maximum 3-band) Noise Figure 5dB @ Max Gain 12dB @ Min Gain ALC Range 20dB, 1dB step Frequency Stability ±0.05ppm
Sprint User Manual 3G Indoor Repeater 12/23 Waveform Quality Factor > 0.97 Output Power Variation over Temperature ±2.0dB 3.2 Electrical and Environmental Specifications ITEM SPECIFICATION REMARK Power & Consumption 100 ~ 240 VAC,60Hz Connector Type N-type female Size 340X300X170 Weight max 40 lbs Reliability, MTBF 50,000 hours Enclosure NEMA4 Operating Temperature -10℃ ~ +50℃ Rel. Humidity 0% ~ 90% Industry Standards TIA-97, TIA-98, IS-98D, IS-2000 Regulatory Approvals FCC, Part24 CDN-IC Safety Approvals UL1950 or Equiv 3.3 Functions ITEM FUNCTIONS Gain Control • Adjustable DL and UL Gain range 60~80dB • Display default Gain and current Gain function AGC (Auto Gain Control) • It always operates in Downlink AGC ON status • To maintain same Downlink output power despite flexible input signal strength • To add or subtract Attenuation level referring to AGC Power Limit level.• Used with the Automatic Setup (Auto Gain Setting)
Sprint User Manual 3G Indoor Repeater 13/23 ALC (Auto Level Control) • To limit output power as far as default range • Used for DAS configuration and when oscillation/isolation is a concern • Automatic Gain decrement when output power of repeater is higher than default level • Automatic Gain recovery when output power of repeater is reduced • Shutdown when output power is higher than default level in Minimum Gain • Automatic Recovery Algorithm conversion after Shutdown status AGS (Auto Gain Setting) • Operate when User control (Only system initialize) • Decrease attenuator value for 3dB from minimum gain • In case of attenuator value is from 0dB to 3dB when AGS ended - AGC on (DL) - Gain balance on - PAM on - Shut down on • In case of attenuator value is over 3dB when AGS ended - AGC off (ALC on) - Gain balance on - PAM on - Shutdown on Gain Balance • Downlink ATT is applied to Uplink during AGC state • Setting and maintenance of output level • Additional attenuation to ALC Level Band Select • To select either 5MHz/10MHz/15MHz/20MHz Power Monitoring Function • Monitoring repeater’s output level DL Input control • Monitoring Donor ANT input power of DL Automatic Recovery • When repeater is shutdown, it periodically recovers output power of repeater then monitors alarming Security • Support HTTPS for Web Browser security • User authentication through User ID and Password
Sprint User Manual 3G Indoor Repeater 14/23 Tem p erature Monitoring • Monitoring temperature of repeater • Maximum and minimum set up is possible • Shutdown in over temperature • Automatic recovery after temperature becomes normal (Hysteresis 10degree) VSWR Monitoring • Monitoring VSWR of Donor ANT Port (Every one and half minute) • Reporting VSWR Alarm and Shutdown when the rate is 3.5:1 IP address report via E-mail • When in PPP reconnection, E-mail which includes HTML to connect to newly assigned IP Address, reports to operator. DHCP Client • Automatic IP assignment DHCP Server • Server function for automatic IP assignment Web GUI • Remote and local user browser support through Web Browser SNMP Agent • NMS report via SNMPv2 Trap LED Display • LED displays power and operation status on front side of repeater system • Input and Output signal levels are verified by LED bars
Sprint User Manual 3G Indoor Repeater 15/23 4. SET UP 4.1 System Set up 4.1.1 Constitution (Based on 1 set) PARAMETER ITEM QUANTITY Major Accessory US PCS 23dBm case 1 EA Additional Components Main power input cable Fixable screw Mountable brackets 1 EA 1 SET 1 EA User Manual Manual 1 EA 4.1.2 Notice 1) System Power check: Major electricity is AC110V, therefore please input electricity after power verification. 2) Input condition optimization: DL input condition is -57 ~ -37dBm. User should verify input condition of Donor ANT. 3) Isolation check between DONOR/SERVICE ANT: Isolation condition of this equipment is 87dBc (Gain+7dB). User should check its condition before installation. <Pic.8> MS 3100 A 10SL-3 (Wall Mount Receptacle) & MS3010 A 10SL-3(Plug)
Sprint User Manual 3G Indoor Repeater 16/23 4.1.3 System Set up 1) This equipment is basically wall mountable installation. 2) Once aforementioned process is done, open for service get ready. 3) For grounding, there is a grounding terminal in main power supply side and the grounding terminal on a site and unit should be connected same. 4) System installation work is basically performed more than two people and should be careful for unexpected accident. <Pic.9> Case Mounts - Step 1
Sprint User Manual 3G Indoor Repeater 17/23 <Pic.10> Case Mounts - Step 2 4.1.4 Open for Service 1) Check points before open a. Verification of system installation status - Electricity, In/out antenna, coaxial cable connection, equipment mounts status. b. Verification of system accessories - User should check whole necessary accessories. c. Check receipt signal level - User should check whether receipt environmental condition is in accordance with system specification, so that system operation will be optimized. 2) Check points after open a. Check by external LED
Sprint User Manual 3G Indoor Repeater 18/23 ① RUN: Green light ON (Off: Green light off) ② ALARM: Green light in normal status, Red light in alarming ③ SHUT DOWN: Green light in normal status, Red light in Shutdown status ④ Number of LED bar on front side of repeater will show input power signal level Less than -86dBm: LED 1 bar -85dBm ~ -70dBm: LED 2 bar -69dBm ~ -54dBm: LED 3 bar -53dBm ~ -41dBm: LED 4 bar More than -40dBm: LED 5 bar ⑤ Number of LED bar on front side of repeater will show output power signal level Less than +14dBm: LED 1 bar +15dBm ~ +16dBm: LED 2 bar +17dBm ~ +18dBm: LED 3 bar +19dBm ~ +21dBm: LED 4 bar More than +22dBm: LED 5 bar <Pic.11> Front LED b. Verification of operation status - User should verify following status with Output monitoring terminal, which is provided by Spectrum Analyzer - Output power generation status, system spurious emission characteristics.
Sprint User Manual 3G Indoor Repeater 19/23 c. Verification of signal quality and strength in service area - User should verify signal strength and quality of in-service coverage area by using cell phone or other measuring device. d. Verification of upper-level NMS operation status 4.2 Troubleshooting In case of abnormal operation, technician should diagnose abnormality via remote access or directly connecting to repeater using Ethernet cable. If technician is required to conduct repairs due to major alarm, repeater should first be powered off, and then technician should prepare the proper measurement equipment before trying to fix the problem. In most cases of major repairs, GST will simply replace the unit and conduct repairs at the appropriate facility. 4.2.1 Necessary Testing and Measuring Equipment 1) RF Power Meter: 10Watt Max, 50ohm 2) Signal Generator: 3GHz 3) Spectrum Analyzer: 3GHz 4) Multi-Meter 4.2.2 Notice 1) Troubleshooting should be performed by a trained technician. 2) Parts that seem to be not used should not be disassembled. 3) While troubleshooting, technician should use attenuator to check RF Signal output. 4.2.3 Simple Troubleshooting Method 1) Verify LED Status, both on external LED’s as well as internal module LED’s - Normal operation: Green light on. Alarming: Red LED on. 2) Technician should check external and internal connectors to ensure that all connections are tightly secure. These connectors should be cleaned regularly. 3) If technician thinks there is a serious problem, call after sales team for over-the-phone technical support. 1-866-9-GST-USA (1-866-947-8872)
Sprint User Manual 3G Indoor Repeater 20/23 4.2.4 Troubleshooting Guide Item Check Point Troubleshooting System input power range -Downlink: -57dBm ~ -37dBm -Uplink: -57dBm ~ -37dBm System gain -Downlink: 60dB ~ 80dB -Uplink: 60dB ~ 80dB Output power at server port -Downlink: 23dBm ± 2dB -Uplink: 23dBm ± 2dB Check before system operation Check points before open for service -Please check quantity of all accessories with specification before you set up -Fit cable length in accordance with field condition -Set up 1900MHz CDMA Donor antenna to secure Isolation. (More than 87dBc) Check after system operation Check points after open for service Check following status; -Verify that the antennas are securely mounted and pointed in the correct directions -Connection status between antennas and RF cable-Verify that the Repeater is securely mounted -Proper AC power status -Grounding status of electrical circuit -Coaxial cable (RF) construction status -Connectors and combiners connection status -Cable connection status against leakage of water 4.2.5 Troubleshooting Guide Related to RF Symptom Check Point Troubleshooting When repeater does not work properly Check electricity cord connection status -Re-plug in Adapter cord
Sprint User Manual 3G Indoor Repeater 21/23 DL over-input alarm Please Check following status; -Proper maximum output power limit level -BTS input level (Spectrum Level) -Input RSSI value on Status Page -Downlink Attenuation level Please reset Adapter upon completing Alarm troubleshooting DL over-output alarm -Make sure output power is operating normally -Reset Adapter upon completing Alarm troubleshooting UL over-output alarm -Please make sure output level is operating normally-Please reset Adapter upon completing Alarm troubleshooting Temperature alarm Check following status; -Setting level of maximum temperature limit -Temperature offset is normal or not -Circumstances of temperature Reset Adapter upon completing Alarm troubleshooting When in alarming RF off -Verify that the HPA’s are On -Reset Adapter upon completing Alarm troubleshooting Technician should verify category of alarm at the front side of repeater -When Red light on the Shutdown LED, technician should troubleshoot the alarm via Notebook computer -Technician should connect antenna with output port of repeater -Please make sure all connectors are fastened -Reconnect the connector -Change it if the connector is defective When output power is no longer problem Check the input level -Increase output power or check input change of BTS side
Sprint User Manual 3G Indoor Repeater 22/23 Check gain of the unit -If the Gain is different from normal level, please contact A/S team Cable connector loose -It is possible for connectors to get too tight and damage the equipment or throughput -Please contact installer or service provider upon verification Check input signal strength in the service area -Increase output power level of repeater by adjusting attenuation level If input signal strength is not a problem, please check delay of calling time -Increase output level of Uplink signal, then set to optimal level. In case of dropped call or bad signal after set up Check RSSI signal strength -Contact network management team or service provider Check connection fastened between antenna and cable (Signal wavelength should be flat and stable if technicians shake CABLE. If not, it is connection problem) -If connection is not proper, reconnect cable and connector and then check the output power again Input level change or module overheating -Check input level from BTS side. -Check performance of each module (Diagnosed by A/S team) In case output Signal wavelength is not shown flat or looks like oscillation Please check VSWR of the cable is normal -Change to normal Cable
Sprint User Manual 3G Indoor Repeater 23/23 4.2.6 Troubleshooting Guide Related to NMS Symptom Check Points Troubleshooting Communication problem -In case of Ethernet, verify IP addressing, DHCP function, and that cookies are deleted -Verify that a crossover Ethernet cable is being usedCLI connection, cable status check -Make sure 1:1 connection -Follow instructions in the installation guide for this connection procedure Link Fail CLI connection Check by USB to serial cable -Please verify port number of PC communication -Please check cable connection status

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