VIERLING Communications ECVTM-PRO Cellular Gateway System User Manual Part I

VIERLING Communications GmbH Cellular Gateway System Users Manual Part I

Contents

Users Manual Part I

ECOTEL® Antenna Installation Instructions Edition 2.0 VIERLING Communications GmbH 70459.210/20 - 2.0 – 20050713
VIERLING Page 2 70459.210/20 - 2.0 – 20050713 – ECOTEL® VIERLING Communications GmbH Pretzfelder Strasse 21, D-91320 Ebermannstadt Postbox 11 65, D-91316 Ebermannstadt Phone: +49 (0) 91 94 - 97 -0 e-Mail: info@vierling.de Internet: http://www.vierling.de © 2005 VIERLING Communications GmbH, Ebermannstadt All rights reserved. Any dissemination, reproduction or processing of this document or its contents or excerpts from it, regardless of the procedure used, is prohibited without prior written permission of VIERLING Communications GmbH. We reserve the right to make changes without prior notice. This text was conscientiously prepared. However, VIERLING Communications GmbH assumes no liability should it nevertheless contain errors.
VIERLING ECOTEL® - 70459.210/20 - 2.0 – 20040913 Page 3 Contents 1. INTRODUCTION.........................................................................5 2. SELECTING A LOCATION.........................................................6 3. INFORMATION FOR INSTALLING THE ANTENNA .................7 3.1 Attenuation Values of Antenna Cables....................................7 3.2 Antennas ..................................................................................10 3.2.1 GSM/UMTS omnidirectional Antenna.............................10 3.3 Antenna Installation ECOTEL®VTM pro ................................12 3.3.1 Antenna Mast....................................................................13 3.3.2 Surge Protection ..............................................................13 3.4 Calculating the Cable Attenuation .........................................16 3.5 Antenna Installation VT-Multi Channel..................................17 3.6 Installing the Antenna Cable ..................................................18 4. ICNIRP/MPE COMPLIANCE ....................................................20 4.1 ICNIRP/MPE Limits ..................................................................20 4.2 Absolute Maximum Power Output of VTM32........................21 4.3 Maximum Power Output of VTM32 (US Version) .................23 4.3.1 System under operational conditions............................23 4.3.2 System under worst case conditions.............................23
VIERLING Page 4 70459.210/20 - 2.0 – 20050713 – ECOTEL® 4.4 Safety Distance........................................................................24 4.4.1 Calculation........................................................................24 4.4.2 FCC Compliance ..............................................................24 4.5 Country Specific Regulations ................................................25
VIERLING ECOTEL® - 70459.210/20 - 2.0 – 20040913 Page 5 1. Introduction During design of ECOTEL® VTM, special attention was given to simple assembling and easy access to the operating interfaces. Certain considerations must be observed however when installing the various interfaces. This application sheet offers practical suggestions for the installation of antennas. IMPORTANT NOTE: To comply with FCC RF exposure compliance requirements, the following antenna installation and device operating configurations must be satisfied: a) The antennas used for this transmitter are to be fixed-mounted on outdoor permanent structures. b) The device must operate with the specific antennas described in section 3.2 of this document c) The antennas used for this device must be installed to provide 1 meters from all persons and the antenna gain must not exceed 2 dBi. e) The device must operate in the transmitter co-location configurations identified in section 3.5 of this document
VIERLING Page 6 70459.210/20 - 2.0 – 20050713 – ECOTEL® 2. Selecting a Location The location of ECOTEL® should be chosen based on the following criteria (listed in the order of priority): • Close to the antenna (10 m up to 50 m) • Close to the PBX / switch -system (up to 200 m phone cable for ISDN (BRI/PRI))
VIERLING ECOTEL® - 70459.210/20 - 2.0 – 20040913 Page 7 3. Information for Antenna Installation 3.1 Attenuation Values of Antenna Cables Antenna cables exhibit very marked differences with regard to attenuation. When assembling, care should be taken to use a short antenna cable. If space requirements do not permit, then a cable with less attenuation must be used. Cable Diameter min. Radius 850 MHz 1900 MHz Order No. RG-178B/U 140 dB/100 m RG-174/U 90 dB/100 m RG-58C/U 5,0 mm 30 mm 50 dB/100 m 74 dB/100 m RG-213/U 10,3 mm 110 mm 23 dB/100 m 35 dB/100 m AirCell 7 7,3 mm 25 mm 21 dB/100 m 32 dB/100 m AirCom Plus 10,8 mm 55 mm 12 dB/100 m 25 dB/100 m 27741.193 An attenuation of 3 dB equals 50% field strength Attenuation = 10 lg (input power/ output power) dB Field Strength Spectrum: -113 dB ... -95 dB insufficient field strength -95 dB ... -70 dB sufficient field strength -70 dB ... -51 dB optimal field strength (best voice quality) (The power control of the GSM network tries to get a signal about –70 dBm)
VIERLING Page 8 70459.210/20 - 2.0 – 20050713 – ECOTEL® Receive Field Strength (dBm/RxLev): PdBm = (RxLev *2 –113) dBm Output Power (dBm/PwrLev) For 900 MHz: PdBm = 33 – (PwrLev –5)*2 For 1800 MHz: PdBm = 30 – PwrLev *2 The translation of power values in dBm to Watt: PW = 0,001 W * 10 ^ (PdBm /10) Receive Field Strength (RSSI / dBm) RSSI dBm RSSI dBm 0 -113 16 -81 1 -111 17 -79 2 -109 18 -77 3 -107 19 -75 4 -105 20 -73 5 -103 21 -71 6 -101 22 -69 7 -99 23 -67 8 -97 24 -65 9 -95 25 -63 10 -93 26 -61 11 -91 27 -59 12 -89 28 -57 13 -87 29 -55 14 -85 30 -53 15 -83 31 -51
VIERLING ECOTEL® - 70459.210/20 - 2.0 – 20040913 Page 9 GSM and UMTS Frequencies GSM Band Uplink (MHz) Downlink (MHz) Bandwidth GSM450 450,4-457,6 460,4-467,6 200 kHz GSM480 478,8-486 488,8-496 200 kHz GSM750 777-792 747-762 200 kHz GSM850 824-849 869-894 200kHz GSM-R 876-880 921-925 200kHz EGSM900 880-890 925-935 200kHz PGSM900 890-915 935-960 200kHz DCS1800 1710-1785 1805-1880 200kHz PCS1900 1850-1910 1930-1990 200kHz UMTS Band Uplink (MHz) Downlink (MHz) Duplex-Distance I 1920- 1980 2110 – 2170 190 MHz II 1850 - 1910 1930 – 1990 80 MHz III 1710 - 1785 1805 – 1880 95 MHz
VIERLING Page 10 70459.210/20 - 2.0 – 20050713 – ECOTEL® 3.2 Antennas For the US market only the Kathrein 800 10147 order code VPol Omni 824–960/1805–2170 360° 2dBi is certificated for operation with ECOTEL®VTM pro. 3.2.1 GSM/UMTS omni directional Antenna (Order Number 70459.112) Technical data Mechanical parameter Colour RAL 7035 (light-grey) Dimensions 216 x 20 mm Weight 0,250 kg Electrical parameter Frequency I 824 –960 MHz Frequency II 1805 -2170 MHz Gain 2 dBi (max 6,5 dBi) Impedance 50 Ohm Match/VSWR <2:1 Max. power 50 W Polarisation vertical Connector N female
VIERLING ECOTEL® - 70459.210/20 - 2.0 – 20040913 Page 11 Antenna Diagram NOTE: The antenna is a 850/1900 MHz antenna. To get the best reception, the antenna must be mounted vertical! ATTENTION: This antenna does not support GSM1800
VIERLING Page 12 70459.210/20 - 2.0 – 20050713 – ECOTEL® 3.3 Antenna Installation ECOTEL®VTM pro ECOTEL®VTM pro should be mounted as close to the antenna system as possible (maximum antenna length: 50 m). The antenna at the serving GSM-cell should be visible from the mounting position. ECOTEL®VTM pro provides an individual RF connector for each antenna. For a distance of up to 30 m a RG 58 antenna cable is sufficient. Longer distances could only be obtained with a AirCel/AirCom cable. Adapters for SMA to N or SMA to FME are necessary to link the different cable diameters. To simplify the antenna installation a antenna installation package is available. (Order Number 70466.401). The antenna installation set comprises: GSM850/1900/UMTS Order Number 70459.112 Adapter FME-SMA : Order Number 47560.915 Adapter N-female/SMA-female: Order Number 47560.020 N-male for AirCom Plus: Order Number 47560.018 N-female for AirCom Plus: Order Number 47560.019 The maximum length of antenna cable has to be calculated before installation! (see section 3.4)
VIERLING ECOTEL® - 70459.210/20 - 2.0 – 20040913 Page 13 Mounting Position The installation of the antennas should be done as close as possible to the GSM-gateway. The RF-cable length should be not longer than 50 m. distance between antennas > 0,2 m; distance to bottom (roof) > 1 m; distance to lightning protectors > 5 m; distance to the base station > 20 m 3.3.1 Antenna Mast The antennas could be mounted on one antenna mast. If it is not possible or allowed to install the antenna mast direct on the roof of the building, small foundations out of cement could be used to fix the antenna mast on the roof. In this case the mast should be not higher than 2 m to avoid problems with wind. The mast must be grounded. 3.3.2 Surge Protection The antenna system could be hit by lightning. Therefore the antenna must be protected against over voltage. A surge protector limits the risk of over voltage for most cases. For a complete protection an insurance which covers the possible financial loss could be arranged. Surge Protector (N-femal/male connector) frequency range: DC to 2500 MHz return loss: ≥ 20dB insertion loss: ≤ 0,2dB impedance: 50 Ohm
VIERLING Page 14 70459.210/20 - 2.0 – 20050713 – ECOTEL® surface: sucoplate temperature range: -40°C to +100°C Imax: 20 kA Umax 800 V Mounting Conditions The surge arrestor should not be mounted in cable ducts or rooms with inflammable objects. The cable from the antenna to the arrestor must be > 5 m. The arrestor must be grounded by a 16 mm² wire with at maximum half the length of the antenna cable length. The ground must have a low resistance to earth. The ground must not be connected to the lightning protector of the roof! (regulation: EN 50083) 16 mm² lground cable lantenna cable Protection Earth Surge-Protector Mast Lightning Protector to MRS lantenna cable > 2 x lground cable ATTENTION: Protection earth and the lightning protector must be individual, none coupled grounds. The diameter of protection earth must be >= 16 mm².
VIERLING ECOTEL® - 70459.210/20 - 2.0 – 20040913 Page 15 Supplier: VIERLING Communications GmbH Surge Protector Surge Protector 20kA Order Number 47560.939 Available Adapter Cables for Antennas Cable SMA-male - FME-female (60 cm): Order Number 47560.914 Cable SMA-male - FME-female (300 cm): Order Number 47560.920 Adapter SMA-male - FME-male: Order Number 47560.915 Cable SMA-male - SMA-male (20 cm): Order Number 47560.916 Cable SMA-male - N-male (30 cm): Order Number 47560.919 Adapter N-female - SMA-female: Order Number 47560.020 Connector N-male: Order Number 47560.018 Connector N-female: Order Number 47560.019
VIERLING Page 16 70459.210/20 - 2.0 – 20050713 – ECOTEL® 3.4 Calculating the Cable Attenuation A sufficient field GSM field strength with adequate reserve, requires a receptive field strength of > -80 dBm. In most cases, this requirement can be met in locations where the GSM transmitting mast is visible. (As a rule, with the transmission mast direct visibility, field strength is between –60 dBm and –50 dB). The attenuation of the entire receiving system in this case must be < 20 dBm (80 dBm – 60 dBm = 20 dBm), (a < -20 dB). These values should serve as a guide. In any case, prior to installation of a GSM antenna system, the actual field strength must be determined using a measuring device or an ECOTEL®-desk-top device. Example: GSM Antenna +2 dB 50 m distance between antenna and ECOTEL® -20 dB < -2 dB + acable (Total Attenuation = Antenna Gain – Attenuation of Splitter + Attenuation of Cable) acable > -18 dB aAirCell 7 = -32 dB / 100 m = -16,0 dB / 50 m aAirCom Plus = -25 dB / 100 m = -12,5 dB / 50 m -> AirCel7 and AirCom cable can be used for the installation! (RG58CU cable should not be used for this location: aRG58CU = -37 dB it is not less than –18 dB !!)
VIERLING ECOTEL® - 70459.210/20 - 2.0 – 20040913 Page 17 3.5 Antenna Installation VT-Multi Channel Earth PRI Fixed Public Network GSM Network Provider A,B GSM Network Provider C,D Surge-Protector Antenna System Mast Earth If more than one antenna is installed, the antennas can be installed in a line or as an antenna array. In both cases the distance between the single antenna must be >20 cm. Antenna in line installation > 20 cm > 20 cm > 20 cm Antenna as array installation
VIERLING Page 18 70459.210/20 - 2.0 – 20050713 – ECOTEL® > 20 cm > 20 cm > 20 cm >20 cm >20 cm 3.6 Installing the Antenna Cable Assembling the antenna cable with N-male/N-female-connectors is shown at Assembling antenna cable on page 19. Directions for assembling the N-male/N-female connectors: The N-male/N-female connector must be assembled in compliance with the mounting instructions. Special attention should be given to inserting the sleeve; for this, a tip: After stripping the isolation, the copper mesh must be bent back completely. The visible copper foil should be smoothed all around in order to facilitate placing the sleeve over it. The somewhat smaller inside diameter of the sleeve was intentionally designed in order to ensure an HF-conform connection between sleeve and copper foil. Screwing the sleeve on works satisfactorily; and screwing the nut onto the threads works in a similar fashion. The sleeve is parenthesized up to the limit. The copper foil hanging over from the sleeve should now be scarified with a sharp knife and then removed. The copper mesh must be bent back all around onto the sleeve soil; the overhanging mesh must then be carefully cut off. Because of the one-sided plastic-coated copper foil, the sleeve must be shoved over this foil. Should the sleeve be shoved under the foil, then galvanic contact is not possible!
VIERLING ECOTEL® - 70459.210/20 - 2.0 – 20040913 Page 19 Tightening the tightening-nut should be very carefully done using the 2 thin spanners (17 and 18 mm). Tightening the nut by force up to the limit results in completely crushing the cable sleeve and the cable itself. Assembling antenna cable
VIERLING Page 20 70459.210/20 - 2.0 – 20050713 – ECOTEL® 4. ICNIRP/MPE Compliance ICNIRP (International Commission on Non-Ionising Radiation Protection) released limits for non ionising radiation. ECOTEL VTM gateway systems full fill all requirements, if the access of pedestrians is restricted in an area of 3.3 m around the antenna (the restriction can be implemented by a information plate, by fence, …). 4.1 ICNIRP/MPE Limits Freq ICNIRP ICNIRP MPE MPE 5% MPE MHz W General Public Occupational General Public General Public Occupational 400-2000 MHz 1,375 f1/2 400-2000 MHz 3 f1/2 300-1500 MHz 1,585 f1/2 300-1500 MHz 0,354 f1/2 300-1500 MHz 3,545 f1/2 850 2 40,08 V/m 87 V/m 46,2 V/m 10,32 V/m 103 V/m 900 2 41,25 V/m 90 V/m 47,55 V/m 10,62 V/m 106 V/m 400-2000 MHz 1,375 f1/2 400-2000 MHz 3 f1/2 300-1500 MHz 61,4 V/m 300-1500 MHz 13,69 V/m 1500-100000 MHz 137 V/m 1800 1 58,33 V/m 127 V/m 61,4 V/m 13,69 V/m 137 V/m 1900 1 59,93 V/m 130 V/m 61,4 V/m 13,69 V/m 137 V/m MPE (maximum permissible exposure, defined by FCC): If the RF emission of the device is lower than 5% of the MPE limit (in mW/cm2), the device can be installed without extra on site measurement. For calculation 10 V/m for the 850/900 MHz band is taken (worst case). -> GSM band with the highest emissions and the lowest limit.
VIERLING ECOTEL® - 70459.210/20 - 2.0 – 20040913 Page 21 4.2 Absolute Maximum Power Output of VTM32 GSM850/900: Number of channels: 32 Peek Power per channel: 2 W Effective Power Factor for GSM (Time Division Multiplex): 1/8 Pmax = 32 * 2 W * 1/8 = 8 W; GSM1800/1900: Number of channels: 32 Peek Power per channel: 1 W Effective Power Factor for GSM (Time Division Multiplex): 1/8 Pmax = 32 * 2 W * 1/8 = 4 W; UMTS: Number of channels: 32 Peek Power per channel: 0,125 W Effective Power Factor for UMTS: 1 Pmax = 32 * 0,125 W = 4 W;
VIERLING Page 22 70459.210/20 - 2.0 – 20050713 – ECOTEL® 4.3 Maximum Power Output of VTM32 (US Version) 4.3.1 System under operational conditions GSM850/900: Number of channels: 32 Peek Power per channel: 2 W Effective Power Factor (Time Division Multiplex): 1/8 Effective Power Factor (Splitter/Combiner): 1 : Poperational = 32 * 2 W * 1/8 = 8 W 4.3.2 System under worst case conditions GSM850/900: Number of channels: 32 Peek Power per channel: 2 W Effective Power Factor (Time Division Multiplex): 1/8 Effective Power Factor (Splitter/Combiner): 1 : P worst case = 32 * 2 W * 1/8 = 8 W
VIERLING ECOTEL® - 70459.210/20 - 2.0 – 20040913 Page 23 4.4 Safety Distance 4.4.1 Calculation In the GSM850/900 band the highest energy is transmitted, so the safety distance is calculated for the GSM850/900 band only; Pmax = 8 W (EIRP: maximal average sending power) PEIRP = 8 W * 6 dBi = 8 W * 10 (6,5/10) = 35 W Elimit = 10 V/m r = sqr(30V/A * PEIRP) / E = sqr(30V/A * 35 W) / 10 V/m = 3.3 m Conditions: Typical isotrope antenna gain = 2 dBi Worst case isotrope antenna gain <= 6,5 dBi As far as the cable loss is higher than the antenna gain (is full filled for standard installations) the calculated 3.3 m safety distance also apply for this installations. 4.4.2 FCC compliance To fulfil FCC compliance measures for one meter distance have been completed. The result did under-run the 100% MPE limit clear. In a conservative consideration therefore the distance of 1m must be fulfilled for FCC compliance. In the follow the distance for 5% MPE is 4,5m. The operator of the gateway has to guarantee, that there is no person within this safety area. The area has to be restricted to any persons by means of a fence or must be marked as hazard area by black/yellow bars painted on the ground. If the access to the area is already restricted by the location of installation (e.g. the antenna is mounted on a roof), an information plate can give a warning to the people which enter this restricted area.
VIERLING Page 24 70459.210/20 - 2.0 – 20050713 – ECOTEL® 4.5 Country Specific Regulations The local authorities claim several other regulative handling from the operator of a antenna system. In Germany each antenna system has to be registered at the local office of the telecom regulation authority. Please contact your local telecom authorities for details.

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