Page 1
UHF 10W Fibre
Fed Remote Site
User Handbook
For
EMS Wireless
AFL Works Order N.: Q112299
AFL product part N.: 60-137701 (10W FO Remote)
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
1 of 38
Page 2
Table of Contents
AMENDMENT LIST RECORD SHEET ...................................................................................................4
INTRODUCTION.........................................................................................................................................5
Scope ........................................................................................................................................................................... 5
Purpose ....................................................................................................................................................................... 5
Glossary of Terms...................................................................................................................................................... 6
Key to AFL RF Module Drawing Symbols ............................................................................................................. 7
1. SAFETY CONSIDERATIONS.........................................................................................................8
1.1 Earthing of Equipment ................................................................................................................................ 8
1.2 Electric Shock Hazard.................................................................................................................................. 8
1.3 RF Radiation Hazard ................................................................................................................................... 9
1.4 Chemical Hazard ........................................................................................................................................ 10
1.5 Laser safety ................................................................................................................................................. 11
1.6 Emergency Contact Numbers.................................................................................................................... 11
2. SYSTEM OVERVIEW....................................................................................................................12
3. REMOTE SITE BDA (60-137701) ..................................................................................................13
3.1 Remote Site 10Watt BDA Shelf (60-137702)............................................................................................ 13
3.1.P Remote Site 10W BDA Shelf Photographs................................................................................................ 13
3.1.1 Remote Site 10W BDA Description .......................................................................................................... 14
3.1.2 Remote Site 10W BDA Electrical/Mechanical Specification.................................................................... 14
3.1.3 Remote Site 10W BDA Electrical/Mechanical Specification.................................................................... 15
3.1.4 Remote Site 10W BDA System Diagram, Drg. Nō. 60-137780 ................................................................ 16
3.1.5 Remote Site 10W BDA Shelf 60-137702 Parts List ..................................................................................17
4. SUB-UNIT MODULES....................................................................................................................18
4.1 Bandpass Filters (02-007302)..................................................................................................................... 18
4.1.1 Description ............................................................................................................................................... 18
4.1.2 Technical Specification............................................................................................................................. 18
4.1.3 Drg. Nō. 02-007302, Filter General Assembly Drawing ......................................................................... 19
4.2 Switched Attenuator (10-000901).............................................................................................................. 20
4.2.1 General Application ................................................................................................................................. 20
4.2.2 Switched Attenuators ................................................................................................................................ 20
4.2.3 Drg. Nō. 10-000901, 0-15dB Switched Attenuator General Assembly Drawing ..................................... 21
4.3 Low Noise Amplifiers (11-007302 & 11-007402)...................................................................................... 22
4.3.1 Description ............................................................................................................................................... 22
4.3.2 Technical Specification (11-007302)........................................................................................................ 22
4.3.3 Technical Specification (11-007402)........................................................................................................ 22
4.3.4 LNA ‘D’ Connector Pin-out details.......................................................................................................... 23
4.3.5 Drg. Nō. 11-007302, LNA Assembly With Alarm Relay........................................................................... 24
4.3.6 Drg. Nō. 11-007402, LNA Assembly With Alarm Relay........................................................................... 25
4.4 1Watt Low Power Amplifier (11-007901)................................................................................................. 26
4.4.1 Description ............................................................................................................................................... 26
4.4.2 Technical Specifications ........................................................................................................................... 26
4.4.3 Drg. Nō. 11-007901, 1W LPA Assembly Drawing ................................................................................... 27
4.5 10W Power Amplifier (12-016302)............................................................................................................ 28
4.5.1 Description ............................................................................................................................................... 28
4.5.2 Technical Specification............................................................................................................................. 28
4.6 Wide Dynamic Range AGC (17-001105, Det. & 17-001201, Atten.)...................................................... 29
4.6.1 Description ............................................................................................................................................... 29
4.6.2 Technical Specification............................................................................................................................. 30
4.6.3 Drg. Nō. 17-001105, ACG Detector Assembly......................................................................................... 31
4.6.4 Drg. Nō. 17-001201, AGC Attenuator Assembly Drawing....................................................................... 32
4.7 24V Single Relay Board (80-008901) ........................................................................................................ 33
4.7.1 Description ............................................................................................................................................... 33
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
2 of 38
Page 3
4.7.2 12V Relay PCB Fabrication Drawing...................................................................................................... 34
4.7.3 12V Relay Board Circuit Diagram ........................................................................................................... 35
4.8 DC/DC Converter, 24V in, 12V 8A out (13-003011) ............................................................................... 36
4.8.1 Description ............................................................................................................................................... 36
4.8.2 Technical Specification............................................................................................................................. 36
4.9 JWS150-24/A PSU (96-300060) ................................................................................................................. 37
4.9.1 Description ............................................................................................................................................... 37
4.9.2 Technical Specification............................................................................................................................. 37
5. INSTALLATION .............................................................................................................................38
5.1 Initial Installation Record.......................................................................................................................... 38
5.2 Installation & Attenuator Settings............................................................................................................ 38
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
3 of 38
Page 4
AMENDMENT LIST RECORD SHEET
Issue
Nō.
Date Incorporated
by
Page No.’s
Amended
Reason for new issue
A 03/02/05 CMH 1st Draft
1 25/05/2005 CMH 1st Issue
Document Ref:-60-137701HBK
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
4 of 38
Page 5
INTRODUCTION
Scope
This handbook is for use solely with the equipment identified by the AFL Part Number
shown on the front cover. It is not to be used with any other equipment unless specifically
authorised by Aerial Facilities Limited.
Purpose
The purpose of this handbook is to provide the user/maintainer with sufficient information to
service and repair the equipment to the level agreed. Maintenance and adjustments to any
deeper level must be performed by AFL, normally at the company’s repair facility in
Chesham, England.
This handbook has been prepared in accordance with BS 4884, and AFL’s Quality
procedures, which maintain the company’s registration to BS EN ISO 9001:2000 and to the
R&TTE Directive of the European Parliament. Copies of the relevant certificates and the
company Quality Manual can be supplied on application to the Quality Manager.
This document fulfils the relevant requirements of Article 6 of the R&TTE Directive.
Limitation of Information Notice
This manual is written for the use of technically competent operators/service persons. No
liability is accepted by AFL for use or misuse of this manual, the information contained
therein, or the consequences of any actions resulting from the use of the said information,
including, but not limited to, descriptive, procedural, typographical, arithmetical, or listing
errors.
Furthermore, AFL does not warrant the absolute accuracy of the information contained
within this manual, or it’s completeness, fitness for purpose, or scope.
AFL has a policy of continuous product development and enhancement, and as such,
reserves the right to amend, alter, update and generally change the contents, appearance and
pertinence of this document without notice.
All AFL products carry a twelve month warranty from date of shipment. The warranty is
expressly on a return to base repair or exchange basis and the warranty cover does not extend
to on-site repair or complete unit exchange.
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
5 of 38
Page 6
Glossary of Terms
Repeater or
Cell Enhancer A Radio Frequency (RF) amplifier which can simultaneously
amplify and re-broadcast Mobile Station (MS) and Base
Transceiver Station (BTS) signals.
Band Selective Repeater A Cell Enhancer designed for operation on a range of channels
within a specified frequency band.
Channel Selective
Repeater A Cell Enhancer, designed for operation on specified channel(s)
within a specified frequency band. Channel frequencies may be
factory set or on-site programmable.
BTS Base Transceiver Station
C/NR Carrier-to-Noise Ratio
Downlink (D.L.) RF signals transmitted from the BTS and to the MS
Uplink (U.L.) RF signals transmitted from the MS to the BTS
EMC Electromagnetic Compatibility
GND Ground
DC Direct Current
AC Alternating Current
ID Identification Number
OIP3 Output Third Order Intercept Point = RF
+(C/I)/2
out
LED Light Emitting Diode
M.S. Mobile Station
N/A Not Applicable
N/C No Connection
NF Noise Figure
RF Radio Frequency
Rx Receiver
Tx Transmitter
S/N Serial Number
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
6 of 38
Page 7
Key to AFL RF Module Drawing Symbols
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
7 of 38
Page 8
1. SAFETY CONSIDERATIONS
1.1 Earthing of Equipment
Cell Enhancers supplied from the mains must be connected to grounded outlets and earthed
in conformity with appropriate local, national and international electricity supply and safety
regulations.
1.2 Electric Shock Hazard
Electrical shocks due to faulty mains driven power supplies.
Whilst ever potentially present in any electrical equipment, such a condition would be
minimised by quality installation practice and thorough testing at:
a) Original assembly
b) Commissioning
c) Regular intervals, thereafter.
All test equipment to be in good working order prior to its use. High current power supplies
can be dangerous because of the possibility of substantial arcing. Always switch off during
disconnection and reconnection.
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
8 of 38
Page 9
1.3 RF Radiation Hazard
RF radiation, (especially at UHF frequencies) arising from transmitter outputs connected to
AFL’s equipment, must be considered a safety hazard.
This condition might only occur in the event of cable disconnection, or because a ‘spare’
output has been left unterminated. Either of these conditions would impair the system’s
efficiency. No investigation should be carried out until all RF power sources have been
removed. This would always be a wise precaution, despite the severe mismatch between the
impedance of an N type connector at 50, and that of free space at 377, which would
severely mitigate against the efficient radiation of RF power. Radio frequency burns could
also be a hazard, if any RF power carrying components were to be carelessly touched!
Antenna positions should be chosen to comply with requirements (both local & statutory)
regarding exposure of personnel to RF radiation. When connected to an antenna, the unit is
capable of producing RF field strengths, which may exceed guideline safe values especially if
used with antennas having appreciable gain. In this regard the use of directional antennas with
backscreens and a strict site rule that personnel must remain behind the screen while the RF
power is on, is strongly recommended.
Where the equipment is used near power lines, or in association with temporary masts not
having lightning protection, the use of a safety earth connected to the case-earthing bolt is
strongly advised.
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
9 of 38
Page 10
1.4 Chemical Hazard
Beryllium Oxide, also known as Beryllium Monoxide, or Thermalox™, is sometimes used in
devices within equipment produced by Aerial Facilities Ltd. Beryllium oxide dust can be toxic
if inhaled, leading to chronic respiratory problems. It is harmless if ingested or by contact.
Products that contain beryllium are load terminations (dummy loads) and some power
amplifiers. These products can be identified by a yellow and black “skull and crossbones”
danger symbol (shown above). They are marked as hazardous in line with international
regulations, but pose no threat under normal circumstances. Only if a component containing
beryllium oxide has suffered catastrophic failure, or exploded, will there be any danger of the
formation of dust. Any dust that has been created will be contained within the equipment
module as long as the module remains sealed. For this reason, any module carrying the yellow
and black danger sign should not be opened. If the equipment is suspected of failure, or is at
the end of its life-cycle, it must be returned to Aerial Facilities Ltd for disposal.
To return such equipment, please contact the Quality Department, who will give you a
Returned Materials Authorisation (RMA) number. Please quote this number on the packing
documents, and on all correspondence relating to the shipment.
PolyTetraFluoroEthylene, (P.T.F.E.) and P.T.F.E. Composite Materials
Many modules/components in AFL equipment contain P.T.F.E. as part of the RF insulation
barrier.
This material should never be heated to the point where smoke or fumes are evolved. Any
person feeling drowsy after coming into contact with P.T.F.E. especially dust or fumes should
seek medical attention.
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
10 of 38
Page 11
1.5 Laser safety
General good working practices adapted from EN60825-2: 1994
“Do not stare with unprotected eyes or with any unapproved optical device at the fibre ends or
connector faces or point them at other people.”
“Use only approved filtered or attenuating viewing aids.”
“Any single or multiple fibre end or ends found not to be terminated (for example, matched,
spliced) shall be individually or collectively covered when not being worked on. They shall
not be readily visible and sharp ends shall not be exposed.”
“When using test cords, the optical power source shall be the last connected and the first
disconnected.”
“Use only approved methods for cleaning and preparing optical fibres and optical
connectors.”
Always keep optical connectors covered to avoid physical damage
Do not allow any dirt/foreign material ingress on the optical connector bulkheads.
The optical fibre jumper cable maximum bend radius is 3cm, any smaller radii may result in
optical cable breakage or excessive transmission losses.
Caution: Do not get them wet, the FO units are NOT weather proof.
1.6 Emergency Contact Numbers
The AFL Quality Department can be contacted on:
Telephone +44 (0)1494 777000
Fax +44 (0)1494 777002
e-mail qa@aerial.co.uk
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
11 of 38
Page 12
2. SYSTEM OVERVIEW
The equipment is manufactured in standard IP54 19” rack shelves and is powered by the
local mains supply. No battery backup is fitted.
The remote site receives the master site RF data via a dedicated fibre link. The downlink fibre
signals are transmitted to the remote site using 1310nm wavelength laser and the uplink
wavelength from remote to master site is 1550nm, using wave division multiplexing to
differentiate between the wavelengths. This means that a single fibre cable can be used for
both uplink and downlink, saving the considerable cost of an extra fibre cable between master
and each remote site.
The 10Watt output power remote BDA drives an air interfaced antenna for the local mobile
coverage.
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
12 of 38
Page 13
3. REMOTE SITE BDA (60-137701)
3.1 Remote Site 10Watt BDA Shelf (60-137702)
3.1.P Remote Site 10W BDA Shelf Photographs
UHF Fibre-Fed Remote Site
User Handbook
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
Page:-
13 of 38
Page 14
3.1.1 Remote Site 10W BDA Description
The remote site 10W Bi-Directional Amplifier receives downlink signals from the Fibre
Optic shelf at port A and passes them through a bandpass filter tuned to the downlink
passband (408-411MHz). From there the signal is amplified by a Low Noise Amplifier
(+31dB) and a 0-15dB switched attenuator to a 10Watt power amplifier (22dB). A final
bandpass filter completes the downlink path to the off-air antenna (port C).
The uplink path starts at the off-air antenna (port C)and is passed first through a bandpass
filter tuned to the uplink band (417-420MHz). A 20dB amplifier and switched attenuator
amplify the signal by 20dB and the signal then passes through a final bandpass filter to the
AGC attenuator. After the attenuator the signal is amplified to one Watt power to the AGC
logarithmic detector giving this path a dynamic range of approximately 30dB. After the
AGC detector the signal exits the shelf to the FO shelf at port B.
3.1.2 Remote Site 10W BDA Electrical/Mechanical Specification
PARAMETER SPECIFICATION
Downlink frequency range: 408–411MHz
Uplink frequency range: 417-420MHz
Approximate
RF levels (BDA shelf):
Approximate RF levels
(FO shelf):
Power supply consumption:
Port A: -10dBm (downlink input)
Port B: 0dBm (uplink output)
Port C: +38dBm (antenna output)
Port A:
Port B:
0dBm (downlink output)
0dBm (uplink output)
6A max.@ 24V DC
1.0A max @ 12V DC
Chassis height: 4U
Chassis depth:
400mm (excluding handles &
connectors
IP protection: IP54
Impedance: 50
AGC level: 0dB
Relative humidity range: 5-95%
Alarms: 2 x LNA, 1W LPA, & 1 x 10W PA
Alarm connector outputs:
Temperature Range:
operation: -10%C to +60%C
storage: -20%C to +70%C
1 & 2 (2 x LNA’s & LPA)
3 & 4 (1 x 10W PA)
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
14 of 38
Page 15
3.1.3 Remote Site 10W BDA Electrical/Mechanical Specification
PARAMETER SPECIFICATION
Downlink frequency range: 408-411MHz
Uplink frequency range: 417-420MHz
Approximate
RF levels:
Port A: -10dBm (downlink BDA input)
Port B: -5dBm (uplink BDA output)
Port C: +38dBm (antenna BDA output)
Downlink RF gain: 50dB
Uplink RF gain: 55dB
Power supply consumption:
6A max.@ 24V DC
1.0A max @ 12V DC
Chassis height: 4U
Chassis depth:
400mm (excluding handles &
connectors
IP protection: IP54
Mains power supply: 150W/24V (6.3A)
Impedance: 50
AGC level: 0dB
Relative humidity range: 5-95%
Alarms: 2 x LNA, 1W LPA, & 1 x 10W PA
Alarm connector outputs:
1 & 2 (2 x LNA’s & LPA)
3 & 4 (1 x 10W PA)
operation:-10%C to +60%C
Temperature Range:
storage: -20%C to +70%C
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
15 of 38
Page 16
3.1.4 Remote Site 10W BDA System Diagram, Drg. N. 60-137780
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
16 of 38
Page 17
3.1.5 Remote Site 10W BDA Shelf 60-137702 Parts List
AFL Part Nō. Part Description Qty.
02-007302 SDF C/L5P VAR.BW TOP SMA 40mm POST 4
10-000901 SW. ATTENUATOR 0.25W 0-15dB 2
11-007302 LNA. 380-500MHz 20dB (C/W RELAY) GA 1
11-007402 LNA. 380-500MHz 30dB (C/W RELAY) GA 1
11-007901 AMPLIFIER TETRA 1W 37dB GAIN ASS 1
12-005921 4U 10W PWR AMP HEATSINK 1
12-016302K PA 380-470MHz 10W CLASS A KIT 1
17-001105 CE AGC UNIT LOG DET/AMP ASSY (24v) 2
17-001201 C/E AGC UNIT ATTENUATOR ASSY 2
19-001021K 4U CHASSIS KIT (400mm deep) 1
80-008902 24V RELAY PCB ASSEMBLY 1
91-030002 N ADAPTOR PANEL FEMALE:FEMALE 3
91-130001 SMA ADAPT 'T' ALL FEMALE 3 GHz 1
91-500025 3 PIN RIGHT ANGLE FREE PLUG NC-X 1
91-510004 3 PIN PNL.MOUNT SOCKET NC-X 1
91-520001 PWR MAINS INL FIXED/SOLD.TERMS 1
91-600014 'D' 9 WAY SOCKET S/B (NON FILTERED) 3
91-600015 'D' 9 WAY PLUG S/B (NON FILTERED) 1
96-200024 DC/DC CONVERTER 18-36Vin/12Vout 5A 60W 1
96-300060 JWS150-24/A PSU 1
96-600003 INSULATING BOOT D.C. 1
96-700034 LED RED 5mm IP67 1
96-700035 LED GREEN 5mm IP67 1
96-920022 3A CIRCUIT BREAKER (ETA) 1
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
17 of 38
Page 18
4. SUB-UNIT MODULES
4.1 Bandpass Filters (02-007302)
4.1.1 Description
The bandpass filters are multi-section designs with a bandwidth dependent upon the
passband frequencies, (both tuned to customer requirements). The response shape is
basically Chebyshev with a passband design ripple of 0.1dB. The filters are of combline
design, and are carefully aligned during manufacture in order to optimise the insertion
loss, VSWR and intermodulation characteristics of the unit. The tuned elements are silverplated to reduce surface ohmic losses and maintain a good VSWR figure and 50 load at
the input and output ports.
No adjustments should be attempted without full network sweep analysis facilities to
monitor both insertion loss and VSWR simultaneously.
4.1.2 Technical Specification
PARAMETER SPECIFICATION
Response type: Chebyshev
Frequency range: 350 – 500MHz (tuned to spec.)
Bandwidth: 3.5 MHz (tuned to spec.)
Number of sections: 5
Insertion loss: 1.2 dB
VSWR: better than 1.2:1
Connectors: SMA
Power handling: 100W max
Temperature range
operation: -10°C to +60°C
storage: -20°C to +70°C
Weight: 3 kg
Size: 266 x 143 x 39.5mm
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
18 of 38
Page 19
4.1.3 Drg. N. 02-007302, Filter General Assembly Drawing
A
B
C
D
E
BYDATEDESCRIPTIONNo
DBS
F
3
A
1
89
30
7
IN 5 PLACES
6
8 325
2
32
5
34
32
IN 4 PLACES
AFL
4/5/00
117 31
IN 2 PLACES
4
ISSUE
02-007302
1A PRODUCTION ISSUE (CR1679 )
20
24
23
IN 2 PLACES
22
33
IN 2 PLACES
SD C OM BLI N E F I LT ER 5P SM A 380MH z
TITLE
(VAR I ABLE BAN D WI D T H) GENER AL AS SEM BLY
CUSTO M ER DRAWING.No
19 28
18
THIRD AN GLE PROJECTION
England
IN 4 PLACES
4
SEE NOTE.1
3
22
3 31
22
AFL
IN 2 PLACES
12
A
B
Tel: (01494) 777000
Fax : (01494) 777002
IN 9 PLACES
2.ALL SOLDER JOINTS TO BE MADE USING
1.IDENT LABEL TO BE SUPPLIED AND
COMPLE TE D AT TEST,FIT CENTRALLY
ON LID
TO PCB
SOLDER MTE
VIEW OF PCB
Aerial Fac ilit ies Lim it ed
ASSEMBLED
1:1
14
17
IN 2 PLACES
SCALE
16
15
THIS IS A PR OPRI ETARY D ESI GN OF AERIAL FACILITIES LTD.
REPRO DUCTIO N OR USE O F THIS DESIGN BY O T HERS IS
PERMISSIBLE ONLY IF EXPRESSLY AUTHORISED I N W R I TIN G
BY AERIAL FACILITIES LTD.
NO DECIMAL PL ACE ± 1 m m
ONE DECIMAL PLACE ± 0.3mm
TWO DECIMAL PLACES ± 0.1mm
DETAIL 1 (IN 2 PLACES)
34
EXPLODED VIEW OF PCB SUB-ASSEMBLY
28
DATE
TO L ERANCES
BB
5/5/00
APPD
123456789
ALL DIMENSIONS ARE I N mm
IN 2 PLACES
C
DETAIL 1
D
E
IN 2 PLACES
DBS
CHKD
DRAWN
UNLESS OTHERWISE STATED
CT
F
UHF Fibre-Fed Remote Site
User Handbook
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
Page:-
19 of 38
Page 20
4.2 Switched Attenuator (10-000901)
4.2.1 General Application
In many practical applications for Cell Enhancers etc., the gain in each path is found to be
excessive. Therefore, provision is made within the unit for the setting of attenuation in each
path, to reduce the gain. The attenuators are located between the first and second stage
amplifiers, (fitting the attenuators in any other position would be detrimental to the noise
and/or output power performance of the Cell Enhancer).
4.2.2 Switched Attenuators
The AFL switched attenuators are available in two different types; 0 – 30dB in 2 dB steps, or
0 – 15dB in 1 dB steps (as in this case). The attenuation is simply set using the four miniature
toggle switches on the top/side of each unit. Each switch is clearly marked with the
attenuation it provides, and the total attenuation in line is the sum of the values switched in.
They are designed to maintain an accurate 50 impedance over their operating frequency at
both input and output and have a low ‘0dB’ insertion loss, typically less than 0.3dB.
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
20 of 38
Page 21
4.2.3 Drg. N. 10-000901, 0-15dB Switched Attenuator General Assembly Drawing
BYDATEDESCR I PTIONNo
DJL
SEW
MRB
6/6/94
20/1/99
30/3/01
ISSUE
PCB ISSUE No CORRECTED
1 PRODUCTION ISSUE
1A PRODUCTION ISSUE (CR0962)
1B
TITLE
ATTENUATOR,0.25W,SWITCHED,0/15dB,ASSEMBLY
A
ISSCUSTOMER DRG.No
3
1B
10-000901
521 11
4
IN 2 POSNS IN 4 POSNS
41
920
England
Aerial Facilities Lt d
R22
R22
R21
R21
R17
R17
R18
R18
ATT4
ATT4
ATT3
ATT3
ATT2
ATT1
ATT1 ATT2
R20
R20
R19
R19
10-0 725- 3 I ss. 3
R16
R16
R15
R15
R11
R11
R12
R12
R14
R14
R13
R13
AFL
R10
R10
R9
R9
R5
R5
R6
R6
R8
R8
R7
R7
R25
R23
R24
R4
R4
R2
R2
R3
R3
R1
VIEW WITH COVER REMOVED
9
26
Fax (0494)764838
Little Chalfont(0494)763636
1:1
SCALE
11820
FIT PCB (ITEM 1) AS SHOWN ALLOWING SWITCH PINS TO PROJECT
BY AERIAL FACILITIES LTD.
PERMISSIBLE ONLY IF EXPRESSLY AUTHORISED I N W R I TING
REPRO DUCTIO N OR USE O F THIS DESIGN BY O T HERS IS
THIS IS A PR OPRIETARY D ESI GN OF AERIAL FACILITIES LTD.
TWO DECIMA L P LACES ± 0. 1m m
ONE DECIMAL PLACE ± 0.3mm
NO DECIMAL PL ACE ± 1 mm
TO L ERANCES
USED ON
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
NOTES:
DO NOT TIGHTEN NUT AT THIS STAGE.
THRO' BOARD. TIGHTEN DOWN PCB AND SWITCH FIXINGS.
1. USE THE FOLLOWING PROCEDURE TO FIT SWITCH, ITEM 11:
INSTALL SWITCHES USING ONE NUT ONLY (ON OUTSIDE) ENSURE NUT IS FITTED WITH FLAT SIDE TO CASE.
SOLDER PINS TO BOARD USING ITEM 26
User Handbook
2. INSTALL CONNECTORS, ITEM 9, USING ITEM TO COMPLETE ALL SOLDERING
Page:-
06/06/94
APPD
DATEDRAWN
DJL
CHKD
21 of 38
ALL DIMENSIONS ARE IN mm
MRB GB
UNLESS OTHERWISE STATED
Page 22
4.3 Low Noise Amplifiers (11-007302 & 11-007402)
4.3.1 Description
The low noise amplifier used is a double stage solid-state low-noise amplifier. Class A
circuitry is used in the unit to ensure excellent linearity over a very wide dynamic range. The
two active devices are very moderately rated to provide a long trouble-free working life.
There are no adjustments on this amplifier, and in the unlikely event of failure then the entire
amplifier should be replaced. Note that the two amplifiers use similar DC/bias circuits.
4.3.2 Technical Specification (11-007302)
PARAMETER SPECIFICATION
Frequency range: 380-500MHz
Bandwidth: <140MHz
Gain: 20-22dB
1dB Compression Point: +23.5dB (typical)
3rd order intercept: +36dB (typical)
Input/Output return loss: >20dB
Noise figure: <1.3dB
Connectors: SMA female
Supply: 200-230mA @ 10-24V DC
Temperature range:
operational: -10°C to +60°C
storage: -20°C to +70°C
Weight: <300gm
Size: 90 x 55 x 30.2 (case only)
4.3.3 Technical Specification (11-007402)
PARAMETER SPECIFICATION
Frequency range: 380-500MHz
Bandwidth: <140MHz
Gain: 30-32dB
1dB Compression Point: +22dBm (typical)
3rd order intercept: +34-35dBm (typical)
Input/Output return loss: >20dB
Noise figure: <1.3dB
Connectors: SMA female
Supply: 300-330mA @ 10-24V DC
Temperature range:
operational: -10°C to +60°C
storage: -20°C to +70°C
Weight: 0.38kg
Size: 90 x 55 x 30.2 (case only)
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
22 of 38
Page 23
4.3.4 LNA ‘D’ Connector Pin-out details
Connector pin Signal
1 +Ve input (10-24V)
2 GND
3 Alarm RelayO/P bad
4 Alarm Relay common
5 Alarm Relay good
6 No connection
7 TTL voltage set
8 TTL alarm/0V (good)
9 O/C good/0V bad
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
23 of 38
Page 24
4.3.5 Drg. N. 11-007302, LNA Assembly With Alarm Relay
1
2
3
4
56789
A
B
C
D
E
BYDA TED ESCRIPTIONNo
DBS
F
A
3
6
IN 3 PLACES
268 30
9/7/02
ISSUE
11-007302
7 32
25
3
RF PCB
2
33
4
DC PCB
2
17 24
10
2 25
PRODUCTION ISSUE
IN 2 PLACES
24
1A
LOW NOISE AMPLIF IER 380-500M H z
(20dB) ASSEMBLY DR AW IN G (W I T H R ELAY)
TITLE
CUSTOMER DR G.No
England
2
Aerial Facilities Lt d
Tel : 01494 777000
Fax : 01494 777002
5
27
5
27
20
15
16 23
W1
C12
J31 J32
R4
W2
2
2
W5
W6
C21
W7
RF O UT
R19
+
L5
TR1
R16
C9
L3
C8
R2
L1
C5
C4
C2
C1
CPL1
R1
R44R4 3
R50 R4 9
J3 J1J2
RL1
R39
REG3
CON1
1 23 456 78 9
COMP ONENTS TO BE ADD ED T O 11-003 912,IT EM 15,DC P CB SU B-ASSEMBLY
A
IN 4 PLACES
31
see note 2
35
4
2
5
21
22
2
1
LABEL DETAILS - SCALE 1:1
1.5:1
see note 2
see note 2
AFL
34
AFL
IN
OUT
0086
DEVICES
SENSITIVE
FOR HANDLING
E LE C TR O S TA TI C
OBSERVE PRECAUTIONS
ATTENTION
********
11-007302
380-500MHz
20dB 10-24V DC
**/**/20**
REF.
FREQ.
GAIN
S/N
AFL
B
C
DATE
D
2819
THIS IS A PROPRIET ARY DESIG N O F AERIAL FACIL ITIES LTD.
DATE
2. LIDS,ITEMS 2 & 3 AND LABELS,ITEMS 31,34 & 35,TO BE FITTED ON TEST
1. SOLDER JOINTS TO BE MADE USING OR
DRAWN
E
SCALE
BY AERIAL F ACIL ITIES L TD.
PERMISSIBLE ONLY IF EXPRESSL Y AUTHORISED IN WRITING
REPRO DUCTIO N O R USE OF T HIS DESIG N BY O THERS IS
DBS 9/7/02
APPD
CHKD
F
TWO D ECI M AL PLACES ± 0.1mm
ONE DECIMAL PLACE ± 0.3mm
NO DECIMAL PL ACE ± 1 mm
TO L ERANCES
CB IB
AL L DIMENSIO NS ARE IN m m
UNLESS OTHERWISE STATED
UHF Fibre-Fed Remote Site
User Handbook
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
Page:-
24 of 38
Page 25
4.3.6 Drg. N. 11-007402, LNA Assembly With Alarm Relay
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
25 of 38
Page 26
4.4 1Watt Low Power Amplifier (11-007901)
4.4.1 Description
This amplifier is dedicated to be a 1.0 W driver from 380 MHz to 470 MHz. It is a 2 stage
amplifier where each stage is in balanced configuration. It demonstrates very high linearity
and good input/output VSWR. There is a Current Fault Alarm Function, which indicates
failure of each one of the RF transistors by various alarm output options. The amplifier is
housed in an aluminium case (Alocrom 1200 finish) with SMA connectors for the RF
input/output and a 9way D-type connector for DC and alarm outputs.
4.4.2 Technical Specifications
PARAMETER SPECIFICATION
Frequency range: 380-470MHz
Small signal gain: 37.5dB
Gain flatness: ±0.5dB
Gain vs. temperature: 1.5dB
Temperature range:
operational:
storage:
-10°C to +60°C
-20°C to +70°C
Input/output return loss: 18dB
Maximum output power: 30.4dBm (@ 1dB comp. point)
OIP3: 43dBm
Supply voltage: 10-15V DC
Current consumption: 780mA (typical)
Noise Figure: <1.75dB
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
26 of 38
Page 27
4.4.3 Drg. N. 11-007901, 1W LPA Assembly Drawing
A
1
812
1 234 5678 9
A
B
2
19
2
6 7
RL1
5
6
-
+
R70
R69
LE D 1
k
D1
k
R68
TR 9 R71
TR 11
R67
TR 10
R62
R66
R65
R64
R63
IC3
R57
R58
R60
R59
R53
R47
R50
R49
IC2
R48
+
+
C27
REG1
C42
R56
R73
+
C18
L8
TR 6
R26
C16
L12
R55
R51
C28
IC1
+
R20
C37
R54
C36
R46 R52
C8
R13
L6
TR 2
C6
L2
C4
C2
ZD 1
C33
C30
+
C29
RF IN
C
IN 4 PLACES
10
2
5
RF OUT
R44
R45
R43
R45
CPL4
R41
R42
C43
R38
C20
C26
C22
C14
R11
TR 4
C12
C40
C41
R40
L10
TR 8
C24
R30
C34
R18
R16
L4
R5
R39
R37
C17
C19
L7
C25
R35
R36
AL3
R29
R24
C10
R4
L9
+8V
AL4
R34
R33
R32
R28
C39
CPL3
CPL2
R15
R17
+8V
AL2
AL1
R9
R8
R6 R7
R3
C31
CPL1
TR 5
TR 7
R31
R27
C35
R19
C9
R2
R1
11-007925 Iss. 2
R25
L11
C15
C23
C21
Limited
Aeria l Facilities
C38
R23
R22
R21
R14
C7
C13
R12
L5
TR 1
L3
C5
L1
R10
C3
TR 3
C1
C11
C32
2
B
C
D
E
BYDATEDESCRIPTIO NNo
MNR
MNR
26/06/03
10/07/03
ISSUE
ECN2982
PRODUCTION ISSUE (ECN2929)
1A
2A
IN 10 PLACES
17 18
TITLE
10 11
THIRD AN GLE PROJECTION
1. ALL SOLDER JOINTS TO BE MADE USING OR .
IN 2 PLACES
14
IN 14 PLACES
DEVICES
SENSITIVE
FOR HANDLING
ELECTROSTATIC
ATTE NTION
AFL
OBSERVE PRECAUTIONS
3 9
OUT
0086
16 4 15
Limited
AFL
Aeria l Facilities
11-007901
***-***MHz
1W 12vD C
**/**/20**
********
REF.
PWR
S/N
DATE
FR E Q .
IN
DATE
13
D
E
DRAWN
UHF Fibre-Fed Remote Site
User Handbook
F
3
A
9
11-007901
TET R A 1W 37dB GAI N
ASSEMBLY D R AW I N G
CUSTO MER DRAWING.No
England
Tel : 01494 77 7000
Aerial Facilities Limited
Fax : 01494 777002
1.5:1
THIS IS A PROPRIETARY D ESI GN OF AERIAL FACILITIES LTD.
REPRO DUCT IO N O R USE OF T HIS DESIG N BY O THERS IS
PERMISSIBLE ONLY IF EXPRESSLY AUTHORISED I N W R I TIN G
BY AERIAL FACILITIES LTD.
TO L ERANCES SCAL E
NO DECIMAL PL ACE ± 1 mm
ONE DECIMAL PLACE ± 0.3mm
TWO DECIMAL PL ACES ± 0 .1m m
IB
26/06/03
APPD
1 234 5678
AL L DIMENSIO NS ARE IN m m
CB
MNR
CHKD
UNLESS OTHERWI SE STATED
F
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
Page:-
27 of 38
Page 28
4.5 10W Power Amplifier (12-016302)
4.5.1 Description
This amplifier is a Class A 10W power amplifier from 380MHz to 470MHz in a 1 stage
balanced configuration. It demonstrates a very high linearity and a very good input/output
return loss (RL). It has built in a Current Fault Alarm Function.
Its housing is an aluminium case (Alocrom 1200 finish) with SMA connectors for the RF
input/output and a D-Type connector for the power supply and the Current Fault Alarm
Function.
4.5.2 Technical Specification
PARAMETER SPECIFICATION
Frequency range: 380-470MHz
Small signal gain: 22.8dB
Gain flatness: ±1.5dB
I/O Return loss: >18dB
1dB compression point: +40.5dBm
Supply voltage: 24V DC
Supply current: 2.5Amps (Typical)
Temperature range:
operational: -10°C to +60°C
OIP3: +53dBm
storage: -20°C to +70°C
Weight: <2kg (no heatsink)
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
28 of 38
Page 29
4.6 Wide Dynamic Range AGC (17-001105, Det. & 17-001201, Atten.)
4.6.1 Description
The equipment is fitted with a wide dynamic range Automatic Gain Control (AGC) system.
This is generally fitted in the Uplink path (not usually needed in the downlink path, as the
signal here is at an almost constant level), to avoid overloading the amplifiers (with the
associated performance degradation) should a mobile be operated very close to the unit.
The AFL wide dynamic range Automatic Gain Control system consists of two units, a
detector/amplifier and an attenuator. The detector/amplifier unit is inserted in the RF path on
the output of the power amplifier, and the attenuator is situated in the RF path between the
1st and 2nd stages of amplification.
Normally the attenuator is at minimum attenuation. The detector/amplifier unit monitors the
RF level being delivered by the power amplifier, and when a certain threshold is reached it
begins to increase the value of the attenuator to limit the RF output to the (factory set)
threshold. Therefore overloading of the power amplifier is avoided.
The factory set threshold is 1dB below the Enhancer 1dB compression point. Some
adjustment of this AGC threshold level is possible, a 10dB range is mostly achieved. It is not
recommended under any circumstances to adjust the AGC threshold to a level greater than
the 1dB compression point as system degradation will occur.
The detector comprises of a 50 transmission line with a resistive tap which samples a small
portion of the mainline power. The sampled signal is amplified and fed to a conventional half
wave diode rectifier, the output of which is a DC voltage proportional to the RF input signal.
This DC voltage is passed via an inverting DC amplifier with integrating characteristics, to
the output, which drives the attenuation control line of the corresponding AGC attenuator.
This unit is fitted at some earlier point in the RF circuit.
The unit contains a 12V DC regulator in the detector module, which supplies stabilised
voltage to the DC amplifier and via an external cableform to the AGC attenuator.
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
29 of 38
Page 30
For small signals, below AGC onset, the output control line will be close to 12V and the
AGC attenuator will have minimum attenuation. As the signal level increases the control line
voltage will fall, increasing the attenuator value and keeping the system output level at a
constant value.
The AGC onset level is adjusted by the choice of sampler resistor R1 and by the setting of
potentiometer VR1, (factory set @ time of system test) do not adjust unless able to monitor
subsequent RF levels.
The attenuator comprises a 50 P.I.N diode, voltage-variable attenuator with a range of 3 to
30dB. The attenuation is controlled by a DC voltage which is derived from the associated
AGC detector unit.
4.6.2 Technical Specification
PARAMETER SPECIFICATION
Frequency Range: up to 1000MHz
Attenuation Range: 3 to 30dB
Attenuation Steps: continuously variable
VSWR: better than 1.2:1
RF Connectors: SMA female
attenuator: 1W Power Handling:
detector/amp: >30W (or as required)
operation: -10°C to +60°C Temperature
Range:
storage: -20°C to +70°C
attenuator (pcb) 50 x 42 x 21mm Size:
Detector (pcb) 54 x 42 x 21mm
attenuator: 90grams Weight:
detector/amp: 100grams
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
30 of 38
Page 31
4.6.3 Drg. N. 17-001105, ACG Detector Assembly
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
31 of 38
Page 32
4.6.4 Drg. N. 17-001201, AGC Attenuator Assembly Drawing
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
32 of 38
Page 33
4.7 24V Single Relay Board (80-008901)
4.7.1 Description
The General Purpose Relay Board allows the inversion of signals and the isolation of
circuits. It is equipped with a single dual pole change-over relay RL1, with completely
isolated wiring, accessed via a 15 way in-line connector.
The relay is provided with polarity protection diodes and diodes for suppressing the
transients caused by "flywheel effect" which can destroy switching transistors or induce
spikes on neighbouring circuits. It’s common use is to amalgamate all the alarm signals
into one, volts-free relay contact pair for the main alarm system.
Note that the board is available for different voltages (12 or 24V) depending on the type
of relay fitted at RL1.
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
33 of 38
Page 34
4.7.2 12V Relay PCB Fabrication Drawing
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
34 of 38
Page 35
4.7.3 12V Relay Board Circuit Diagram
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
35 of 38
Page 36
4.8 DC/DC Converter, 24V in, 12V 8A out (13-003011)
4.8.1 Description
The DC/DC converter fitted is a high power modular unit with a 5 amp @ 12V output
capability. The circuit is basically an O.E.M semiconductor regulator (one side of which has
a heatsink mounting plate, usually bolted to the casing of a Cell Enhancer/rack shelf) with
screw block terminations.
Note: no circuit diagram of the O.E.M. regulator is available. This unit should not be
repaired, only replaced.
4.8.2 Technical Specification
PARAMETER SPECIFICATION
Input Voltage Range: 18-36V DC
Output Voltage: 12V±0.5V
Max. Current Load: 5.0Amps (100Watts)
operation:-10°C to +60°C
Temperature range:
storage: -20°C to +70°C
Size(PCB): 190 x 63mm
Weight: 300gms
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
36 of 38
Page 37
4.9 JWS150-24/A PSU (96-300060)
4.9.1 Description
The power supply unit is a switched-mode type capable of supplying 24V DC at
6.25Amps continuously. Equipment of this type typically requires approximately 2-
2.5Amps at 24V DC, so the PSU will be used conservatively ensuring a long operational
lifetime.
No routine maintenance of the PSU is required. If a fault is suspected, then the output
voltage from the power supply may be measured on its output terminals. This is typically
set to 24.5V. The output voltage may be varied using a multi-turn adjustment
potentiometer mounted close to the DC output terminals.
All the PSU’s used in AFL Cell Enhancers are capable of operation from either 110 or
220V nominal AC supplies. The line voltage is sensed automatically, so no adjustment or
link setting is needed by the operator.
4.9.2 Technical Specification
Frequency: 47 to 63Hz
22 to 26V (absolute limits)
Maximum current: 6.25A (150Watts)
AC Input Supply:
Voltage: 110 or 220V nominal
90 to 132 or 180 to 264V
(absolute limits)
DC Output Supply:
Voltage: 24V DC (nominal)
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
37 of 38
Page 38
5. INSTALLATION
5.1 Initial Installation Record
When this equipment is initially commissioned, please use the equipment set-up record sheet
in Appendix A. This will help both the installation personnel and AFL should these figures
be needed for future reference or diagnosis.
5.2 Installation & Attenuator Settings
The UHF Fibre Optic System comprises a remote site fibre driven 10Watt bi-direction
amplifier. It is fed from a fibre optic tray which links to the master site fibre optic tray via a
single fibre optic cable. The Tx and Rx signals use different optical frequencies and are
coupled using wave division multiplexers (WDMs). The three BDA will feed either an omnidirectional antenna or leaky feeders to provide UHF radio coverage in areas where signal
levels and reception from the BTS are poor and in which the mobiles are to be served.
The duplexer, fibre optic and BDA trays are all designed to be mounted in standard 19”
equipment racks.
The maximum output from the BDAs is limited by built-in AGC circuits. The gain in both the
downlink and the uplink paths can be adjusted using switched attenuators which can be
accessed from the rear panels of the BDA trays. The master site is also fitted with attenuators
which control the signal levels to and from the master site fibre optic tray. All switched
attenuators are switched to maximum attenuation prior to despatch.
The downlink attenuator in the master site should be adjusted so that -14dBm is available
from the downlink connector when one channel is being driven at maximum power by the
BTS. The uplink attenuator in the master site should be adjusted so that an input signal to the
uplink connector of -5dBm will provide a maximum signal to the coupler of -20dBm.
The downlink attenuator on the 10W BDA should be adjusted so that an input signal of
-10dBm provides an output to the antenna connector of +25dBm. The uplink attenuator on the
10W BDA should be adjusted so that an input signal of -50dBm will provide an output of
0dBm to the Uplink F/O Tray connector.
UHF Fibre-Fed Remote Site
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
User Handbook
Page:-
38 of 38
Loading...