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

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Document Description	Users Manual Part I
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Date Submitted	2005-07-22 00:00:00
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Document Title	(70459.210~20_A2-0_Antenna_Installation_Instructions_engl.d\205)
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Document Author:	FriedrichE

ECOTEL®
Antenna Installation Instructions
Edition 2.0
VIERLING Communications GmbH
70459.210/20 - 2.0 – 20050713
VIERLING
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.
Page 2
70459.210/20 - 2.0 – 20050713 – ECOTEL®
VIERLING
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
ECOTEL® - 70459.210/20 - 2.0 – 20040913
Page 3
VIERLING
4.4
Safety Distance........................................................................24
4.4.1
Calculation........................................................................24
4.4.2
FCC Compliance ..............................................................24
4.5
Page 4
Country Specific Regulations ................................................25
70459.210/20 - 2.0 – 20050713 – ECOTEL®
VIERLING
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 fixedmounted 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
ECOTEL® - 70459.210/20 - 2.0 – 20040913
Page 5
VIERLING
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))
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VIERLING
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
Diamet
er
min.
850 MHz
Radius
RG-178B/U
140 dB/100 m
RG-174/U
90 dB/100 m
1900 MHz
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
Order No.
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)
ECOTEL® - 70459.210/20 - 2.0 – 20040913
Page 7
VIERLING
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
-113
16
-81
-111
17
-79
-109
18
-77
-107
19
-75
-105
20
-73
-103
21
-71
-101
22
-69
-99
23
-67
-97
24
-65
-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
Page 8
70459.210/20 - 2.0 – 20050713 – ECOTEL®
VIERLING
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
II
III
Uplink (MHz)
1920- 1980
1850 - 1910
1710 - 1785
Downlink (MHz)
2110 – 2170
1930 – 1990
1805 – 1880
ECOTEL® - 70459.210/20 - 2.0 – 20040913
Duplex-Distance
190 MHz
80 MHz
95 MHz
Page 9
VIERLING
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
Page 10
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
70459.210/20 - 2.0 – 20050713 – ECOTEL®
VIERLING
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
ECOTEL® - 70459.210/20 - 2.0 – 20040913
Page 11
VIERLING
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 GSMcell 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)
Page 12
70459.210/20 - 2.0 – 20050713 – ECOTEL®
VIERLING
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
distance to bottom (roof)
distance to lightning protectors
distance to the base station
3.3.1
> 0,2 m;
> 1 m;
> 5 m;
> 20 m
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
ECOTEL® - 70459.210/20 - 2.0 – 20040913
Page 13
VIERLING
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)
to
MRS
SurgeProtector
16 mm²
lantenna cable
Mast
lground cable
Protection Earth
Lightning Protector
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.
Page 14
70459.210/20 - 2.0 – 20050713 – ECOTEL®
VIERLING
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
ECOTEL® - 70459.210/20 - 2.0 – 20040913
Page 15
VIERLING
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
aAirCom Plus
= -32 dB / 100 m
= -25 dB / 100 m
= -16,0 dB / 50 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 !!)
Page 16
70459.210/20 - 2.0 – 20050713 – ECOTEL®
VIERLING
3.5
Antenna Installation VT-Multi Channel
Fixed Public Network
GSM Network
PRI
Provider A,B
SurgeProtector
GSM Network
Provider C,D
Antenna System
Mast
Earth
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
ECOTEL® - 70459.210/20 - 2.0 – 20040913
Page 17
VIERLING
>20 cm
>20 cm
> 20 cm
3.6
> 20 cm
> 20 cm
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!
Page 18
70459.210/20 - 2.0 – 20050713 – ECOTEL®
VIERLING
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
ECOTEL® - 70459.210/20 - 2.0 – 20040913
Page 19
VIERLING
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
MHz
ICNIRP
ICNIRP
MPE
MPE 5%
MPE
General Public
Occupational
General Public
General Public
Occupational
400-2000 MHz
400-2000 MHz
300-1500 MHz
300-1500 MHz
300-1500 MHz
1/2
850
900
1,375 f
3f
1,585 f
0,354 f
3,545 f1/2
40,08 V/m
87 V/m
46,2 V/m
10,32 V/m
103 V/m
41,25 V/m
90 V/m
47,55 V/m
10,62 V/m
106 V/m
400-2000 MHz
400-2000 MHz
300-1500 MHz
300-1500 MHz
1500-100000 MHz
1/2
1/2
1/2
1/2
1/2
1,375 f
3f
61,4 V/m
13,69 V/m
137 V/m
1800
58,33 V/m
127 V/m
61,4 V/m
13,69 V/m
137 V/m
1900
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/cm ), 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.
Page 20
70459.210/20 - 2.0 – 20050713 – ECOTEL®
VIERLING
4.2
Absolute Maximum Power Output of VTM32
GSM850/900:
Number of channels:
32
Peek Power per channel:
2W
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:
1W
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:
Pmax = 32 * 0,125 W = 4 W;
ECOTEL® - 70459.210/20 - 2.0 – 20040913
Page 21
VIERLING
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:
2W
Effective Power Factor (Time Division Multiplex):
1/8
Effective Power Factor (Splitter/Combiner):
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:
2W
Effective Power Factor (Time Division Multiplex):
1/8
Effective Power Factor (Splitter/Combiner):
P worst case = 32 * 2 W * 1/8 = 8 W
Page 22
70459.210/20 - 2.0 – 20050713 – ECOTEL®
VIERLING
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 =
8W
PEIRP =
8 W * 6 dBi = 8 W * 10 (6,5/10) = 35 W
Elimit =
10 V/m
(EIRP: maximal average sending power)
sqr(30V/A * PEIRP) / E
sqr(30V/A * 35 W) / 10 V/m =
Conditions:
Typical isotrope antenna gain
Worst case isotrope antenna gain
3.3 m
<=
2 dBi
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.
ECOTEL® - 70459.210/20 - 2.0 – 20040913
Page 23
VIERLING
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.
Page 24
70459.210/20 - 2.0 – 20050713 – ECOTEL®

---

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Title                           : (70459.210~20_A2-0_Antenna_Installation_Instructions_engl.d\205)
Creator                         : FreePDF 2.0 (www.shbox.de)
Author                          : FriedrichE

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