TTPA Installation Guide
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(draft version)
Disclaimer
The information contained in this publication has been carefully reviewed to ensure it’s accuracy.
However, since the possibility for errors can never be entirely eliminated, Allgon System AB
assumes no responsibility for any inaccuracies or errors in the information contained herein. This
information does not convey to the purchaser or user of any product described in this publication
stated by written agreement by Allgon System AB. Allgon System AB, and it’s affiliates, reserve
the right to change any specification, design, model and any other information contained herein
without notice.
Allgon System AB does not assume any liability arising out of, or associated with, the application
or use of any product or item described herein. The products from Allgon System AB are not
designed, intended or authorized, for use as components in systems or applications intended to
support or sustain life, or for any nuclear facility application, or for any other application in which
the failure of the product(s) could create a situation where personal injury or death may occur.
Allgon System AB will not knowingly sell it’s products for use in such applications, and the buyer
shall indemnify and hold harmless Allgon System AB and it’s employees, subsidiaries, affiliates,
representatives and distributors against all claims, costs, damages, expenses, court and attorney
unintended or unauthorized use, even if such claim alleges that Allgon System AB was negligent
regarding the design or manufacture of the product.
Contents
1. General Information 4
Overview 4
Safety Considerations 4
2. Installation of the TTPA 2
Outdoor conditions 2
Dimensions 2
Mounting equipment 2
Checklist before mounting and installation 2
Installation procedure for TTPA 2
Checklist after mounting and installation 4
3. Installation of CI 5
General 5
Outdoor and indoor conditions 5
Mounting equipment 5
Checklist before mounting and installation 5
Installation procedure for CI 5
Checklist after mounting and installation 6
4. Installation of APDU 6
General 6
Outdoor and indoor conditions 6
Dimensions 7
Mounting equipment 7
Checklist before mounting and installation 7
Installation procedure for APDU in BTS 8
Checklist after mounting and installation 8
5. Commissioning 8
Appendix 1. TTPA Software Settings 9
Optimising coverage 9
General link budget characterisation, step by step 9
Appendix 2: System Configuration Examples 11
Configuration I 11
Configuration II 12
Configuration III 13
Configuration IV 14
Acronyms and Abbreviations
APDU Alarm and Power Distribution Unit
BTS Base Tranceiver System
CI Current Injector
DMM Digital Multi Meter
ESD Electro Static Discharge
LED Light Emitting Diod
LNA Low Noise Amplifier
MTBF Mean Time Between Failures
MTTR Mean Time To Replace
NF Noise figure
TTA Tower Top Amplifier
TTPA Tower Top Power Amplifier
1. General Information
It is important for everyone involved in the installation, operation, and maintenance of
The TTPA is environmentally protected (IP 65), and can be mounted without any kind
Overview
The physical installation of each part of the TTPA system is described in separate
chapters. Testing and functioning check is described in a separate chapter. Different
kinds of system configurations are described in the last chapter.
Note that at some stages during the installation, the BTS must be turned off. To
prevent extensive downtime it may be useful to finish the stages of the installation of
both TTPA, APDU and CI when the BTS still is active. The BTS then has to be shut
down only once for finishing the installation of all included parts.
Note that all information in this manual may change without any notice. Refer to the
technical specifications for the latest information on the TTPA products.
Safety Considerations
The TTPA is equipped with a pole clamping unit. This enables the installation
personnel to first install the relatively light mast clamp, and then easily hook on the
actual amplifier. This feature reduces the risk of accidents during installation.
the TTPA, APDU and CI to understand the following points:
• The TTPA, APDU, and CI are designed to amplify the uplink signal from the
mobile phone and the downlink signal to the mobile phone. The TTPA system
must be used exclusively for this purpose and no other.
• No units included in the system (TTPA, APDU or CI) may be repaired in the
field. All malfunctioning parts must be sent back to Allgon Systems for repair or
replacement.
• Always use an ESD bracelet during installation of electrical equipment and when
touching the BTS connectors, or when handling electrical equipment, to prevent
ESD damage.
• The mounting of the TTPA on high masts, poles or roofs must be done by skilled
personnel, authorised to work on high masts, poles, or roofs. The personnel must
be aware of security regulations and use appropriate security equipment.
• The coaxial cable insulation is made of PTFE, polytetrafluoroethylene, which
gives off small amounts of hydrogen fluoride when heated. Hydrogen fluoride is
poisonous. Heating tools must not be used when stripping off coaxial cable
insulation. No particular measures are to be taken in case of fire, because the
emitted concentration of hydrogen fluoride is very low.
2. Installation of the TTPA
Outdoor conditions
of protection from bad weather conditions. However, it is not permitted to install the
installation are protected, the installation may continue not less than one hour after the
Before the actual installation is started, read the safety information at the beginning of
TTPA in bad weather conditions. If the bad weather conditions are of a short
duration, and the TTPA and all other connectors that are to be connected during the
adverse conditions have ended.
Dimensions
Weight is 12 kilos for TTPA unit, 3 kilo for clamping unit.
Mounting equipment
A standard mounting kit is delivered with each TTPA. It contains one holder used for
both pole mounting and wall mounting, and screws needed for the mounting. The
brackets for pole mounting fit poles with diameters of between 50 and 120 mm.
A torque meter is needed for tightening bolts and connectors. Amalgamated tape for
insulating the connectors is not required, but may be used.
Checklist before mounting and installation
• Are all the necessary adapter cables available and are they long enough?
Normally, a 1 meter long adapter cable is needed for the connection between the
TTPA and the antenna.
• Are the 7/16 connectors to be connected to the TTPA of the correct sex?
• Are brackets of the right size available?
• Are sufficiently long grounding straps available?
• Is the place where the TTPA is to be mounted the optimal location, considering
cable lengths and length of grounding straps?
• Is there a distance of free air of at least 0.5m from top and bottom sides, and 0.2
m from all other sides except the backside?
Installation procedure for TTPA
this guide.
Phase 1: The first phase of the installation, that is the mounting of the TTPA and
grounding cable, can be carried out with the BTS still active.
If the TTPA unit is to be mounted on a wall, you’ll need to take away the four tabs
for pole mounting on the mounting plate (see picture below). The easiest way is to
bend them away with a pair o pliers.
Figure 1: Mounting plate
clamps or screws and plastic plugs provided with the unit. The cable connectors of
: Note that the holes shall be 10 mm in diameter, and about 60 mm
• Attach the mounting plate for the TTPA to the wall or the mounting pole. Use the
the unit must be on the bottom side of the unit. Tilt must not exceed 10 degrees.
Pole mounting: Note that the inner nut (with a flange) is kept in position while it
is locked by the outer nut.
Wall mounting
deep, and that the plastic plugs included in the mounting kit shall be used.
Figure 2: Pole mounting
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