Module 2 – Nokia Flexi WCDMA BTS Module Installation Review* ©
Nokia Siemens Networks Module 3 – Module Installation&Cabling /
MNa / 2007-09-10
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Nokia Siemens Networks
Intellectual Property Rights
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Networks training documentation, product documentation and slide
presentation material, all of which are forthwith known as Nokia
Siemens Networks training material, are the exclusive property of
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copying, modification, translation, adaptation or derivatives
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After completing this module, the participant will be able
to:
Theory:
Describe installation options for Flexi EDGE BTS
Identify the interfaces and connectors of the Flexi EDGE BTS in
respect to configuration
Demonstrate best practices for facilitating future site
expansion
Practical:
Install Flexi EDGE BTS modules
Install and route cables on the Flexi EDGE BTS according to
specified configurations
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After completing this module, the participant will be able
to:
Theory:
Practical:
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Purpose
This section gives an overview of the main tasks of Flexi EDGE BTS
installation process.
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General work order
Check the tools
Fix adapter mechanics to the plinth (wall & pole
installations)
Install the plinth (stack, wall & pole installations) or
cabinet
Ground the plinth or cabinet
Install the casings to the plinth
If you are using the Power Module (FPMA) or the Power DC/DC 24V
Module (FPDA), install the back covers on the casings.
Install transmission sub-module to ESMA
Install the modules
Install optional modules
Connect the cables
Install module front covers
10. Order of cables varies a bit according to the config.
Typically:
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Note: The order varies a bit according to the configuration.
Typical cabling order:
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Handling the modules and unpacking the delivery
When handling the modules, always use the antistatic wrist strap as
shown in the figure below. The cabinet must be grounded, otherwise
the antistatic wrist strap will not work. Refer to Grounding the
BTS section.
ESD ANTI-STATIC WRIST STRAPS SHOULD BE WORN WHEN HANDLING ANY UNIT
WHICH DISPLAYS THE ESD LOGO
NOTE: wrist strap not included in the Flexi EDGE BTS
deliveries
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Unpack and check the delivery: ESMA System Module
ESMA delivery contains: ESMA module + four M5 screws + two AWG 4
(25 mm2) connector rubber boots + pull-out tool to ease pulling the
module out of the casing (‘the hook’)
Cage nuts are delivered with casings and cabinets.
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Casing delivery content
Casing delivery (EMHA 3 HU or EMTA 2 HU) contains: Casing, 2 cable
entries, front cover, back cover, 4 M5 x 10 screws, 6 M5 x 6
screws, 4 cage nuts, 2 safety catches, grounding cable
2 safety catches
These items are part of the casing delivery content.
NOTE: Back cover is normally ready installed in the casing. FPMA
and FPDA power modules are reused Flexi WCDMA sales items and there
the covers are separately so you have to install them
yourself.
-M5x6 screws are for attaching the casing to the plinth and each
other
-FMCB casing for FPDA 24/48V converter when used without a cabinet.
It is 2 HU. Delivery includes:
-back cover
-front cover
-Grounding cable
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EXxA delivery contains:
EXxA module
EXxA module cable set: power cable 1.188m , bus cable 1.054 m, 4 x
RF cables 0.172 m
4 M5 screws
994938 Ethernet 1.054 m 1
994931 RF Cable 0.172 m 4
Cage nuts are delivered with casings and cabinets.
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Power cable
Bus cable
RF cables
RF cable photo shows all available RF cable types. The ‘standard’
994931 RF cable included in the DTRX delivery (four included) is
the 0.172 m one.
Special cable kits:
-EUCA kit for expansion needs. The EUCA is used for the stack 4+4+4
expansion case or custom configurations requiring extra long RF
cables. It can also be used for 12+12+12 RTC with two
cabinets.
-EPCA Extension Ethernet and Power Cable Kit for 3+3+3/4+4+4 2-way
2UD on a wall or pole – types of installations (when more than 2
plinths-> distance between the furthest plinth and ESMA
long)
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Unpack and check the delivery: EWxx WBC Module
EWxA delivery contains: EWxA module + one pre-installed screw +
cable set (RF cable 0.275 m, DP cable 0.203 m)
EWxB delivery contains: EWxB module + one pre-installed screw + RF
cable 0.275 m
340.bin
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Unpack and check the delivery: ERxA DDU Module
ERxA delivery contains: ERxA module + two M5 screws + two cage
nuts
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Unpack and check the delivery: ECxA RTC module
ECxA delivery contains: ERxA module, power cable, bus cable, 8 RF
cables, four M5 screws, four cage nuts
RTC Cable Set
994938 Ethernet 1.054 m 1
994933 RF Cable 0.275 m 8
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Unpack and check the delivery: FMFA mounting kit
FMFA delivery contains: Mounting kit (the plinth for floor, wall
and pole), adapter mechanics (for wall&pole), spring washers
(18 pcs for M5 screws and 8 pcs for M8 screws), 2 x fixing plate
for the casing, 12 x M5 screws, 6 x M8 screws
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Unpack and check the delivery: FPMA power module
FPMA delivery contains: Power Module (FPMA) with internal AC and DC
cabling and cable support plates, 2 x Power Module cable entries
(identical to EMHA cable entries), Alarm cable to the System
Module, 2 x cable clamps, 4 x M5 screws for fixing cable entries to
the casing, 4 x K30 screws for the cable clamps, 2 x M5 screws for
fixing the casing to another casing or plinth, 10 x cable
ties
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Unpack and check the delivery: FPAA or FPBA
Delivery contains: Power sub-module (FPAA or FPBA) with two RJ-45
connector seal caps installed, Alarm cable, 2 x M5 screws for
fixing the FPAA or FPBA to FPMA
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Unpack and check the delivery: FPDA
Delivery contains: Power module (FPDA) DC/DC converter core
pre-installed inside a 2U casing with cable support plates and with
two RJ-45 connector seal caps installed, 2 x cable entries, 2 x DC
output power cables, Alarm cable, 4 x AWG 4 (25 mm2) connector
single rubber boot, 2 x AWG 4 (25 mm2) connector double rubber
boot, 4 x M5 screws for fixing cable entries to the casing and 2 x
M5 screws for fixing the casings to each other, 2 x cable clamps, 4
x K30 screws for cable clamps
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LMP cable
Delivery contains: ELCA LMP cable 50 m (164.0 ft), optional OD
protected long LMP cable used with mast top installations
Synchronisation cables (ESxA)
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Synchronisation test cable (ESTA)
For gaining access to 13 MHz and Frame Clock signals when measuring
the BTS RF performance with external test equipment.
Connected to ESMA’s Sync Out interface
MDR14: This is inserted into the SYNC OUT connector on the ESMA
System Module
BNC-1 (TSTCLK): Provides 13 MHz clock signal for external test
equipment (reference clock for RF measurements)
BNC-2 (TSTFCLK_OUT) : Provides Frame Clock signal (approx.. 217 Hz)
for external test equipment.
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Installation order
Installation and cabling order varies a bit according to the
installation type. See Flexi EDGE BTS ‘user manual’ (Product
Documentation NED) for installation type-specific
instructions.
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Grounding the plinth
The plinth is grounded to the site main ground. The plinth must be
grounded after it is installed.
Steps
2. Connect the wrist strap.
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Installing transmission sub-module
Transmission sub-module is chosen based on the transmission
requirements of each site.
CAUTION: Electrostatic discharge (ESD) may damage the modules. Wear
an ESD wrist strap or use a corresponding method when handling the
modules.
1. Align the transmission sub-module in the System Module using the
slots on the sides. Push the sub-module in place.
Fix the transmission sub-module with 4 x M5 screws using the TORX
head screw
Switch off the Nokia Flexi EDGE BTS before replacing the
transmission sub-module.
It is theoretically possible to hot-insert the transmission
sub-module on a working Flexi EDGE BTS, but taking off the
transmission sub-module also cuts off the traffic….
New transmission sub-modules may be damaged and will not operate
correctly if the sub-modules are replaced when the BTS power is
switched on.
Replacing instructions:
1. Notify the appropriate personnel and block the BCF with Nokia
Flexi EDGE BTS Manager. Alternatively, you can request a BCF lock
from the BSC.
2. Connect the ESD wrist strap on the plinth.
3. If covers are used, loosen the screws on the front cover of the
System Module, and remove the cover.
4. If cable entries are used, remove them from the System
Module.
5. Wait for stable yellow LED to be displayed on the System Module.
It takes one minute for the LED to change to yellow.
6. Disconnect the cables on the transmission sub-module.
7. Loosen the 4 x M5 screws and detach the transmission
sub-module.
8. Align the new transmission sub-module with the two guide pins in
the System Module, and push the sub-module in place.
9. Fix the transmission sub-module with 4 x M5 screws.
10. If cable entries are used, re-install them on the System
Module.
11. Connect the cables on the transmission sub-module.
12. If front covers are used, re-install them on the System
Module.
13. Unblock the BCF with Nokia Flexi EDGE BTS Manager.
Alternatively, you can request to unlock the BCF from the
BSC.
14. Do one of the following, depending on whether the transmission
sub-module type was changed:
-If the transmission sub-module type was not changed, perform site
reset.
-If the transmission sub-module type was changed, perform undo
commissioning with removal of bypass traffic after the new
transmission sub-module is inserted. Then commission the BTS.
Steps
1. Detach the system module core fixing screws (4 pcs) and external
cable entries (2 pcs).
2. Pull the system module core out of the casing.
3. Check that the FCM-FTM connection card on the system module is
straight.
4. Align the transmission sub-module with the two guide pins in the
system module, and push the sub-module in place.
5. Fix the transmission sub-module with 4 x M5 screws.
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Steps
If you are installing the Power Module (FPMA) or Power DC/DC 24V
Module (FPDA), attach the back covers to the casings. For
instructions, see Installing covers in stacked installations.
Align the holes of the first casing bottom with the fixing studs on
the plinth.
Push the casing back until it stops.
Attach the casing to the plinth with M5 x 6 mm (0.2 in.)
screws.
Align the holes of the next casing bottom with the fixing studs
from the previous casing.
Slide the casing back until it stops.
Attach the casings to each other with M5 x 6 mm (0.2 in.)
screws.
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8. Repeat steps 2-7 for each subsequent casing.
9. Slide the module(s) into the casing.
10. Attach the module(s) to the casing with M5 x 25 mm (1.0 in.)
screws.
Tip: Align the module in the casing, and tighten the screws
diagonally (instead of tightening the screws on one side
first).
11. Repeat steps 9-10 for each subsequent module.
12. Attach the cable entries to the casings with two M5 x 6 mm (0.2
in.) screws.
a. Fix the screws (do not tighten yet).
b. Attach the cable entry to the casing.
c. Tighten the screws.
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FPDA as an example. It is 2 HU.
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E.g. location of FPMA and FPDA in a stack:
-There can only be one FPMA per stack, so placing the FPMA at the
bottom of the stack allows for easier expansion of the top sector
module. That sector can be expanded without the Upgrade RF Cable
Kit EUCA.
-The recommended location of the FPDA is on top of the stack. This
is for possible future expansion - the new FPDA can be installed
directly on top of the existing one.
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Fixing adapter mechanics to plinth in wall and pole
installations
Purpose
Adapter mechanics brackets are installed on the plinth in wall and
pole installations.
Steps
Note: the picture shows a right-hand installation.
1. Fix the upper bracket of the adapter mechanics on the plinth
with 3 screws. Tighten the screws to 10 Nm.
2. Fix the lower bracket of the adapter mechanics on the plinth
with 3 screws. At this point, do not tighten the screws yet. (When
the screws are left loose at this point, it allows the plinth
to
move slightly and prevents twisting in the installation
phase.)
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Mounting the plinth on a wall
A plinth is required for mounting the modules on a wall.
Steps
1. Mark the mounting screw locations on the wall and drill the
holes for the screws.
2. Fix the upper mounting screws to the wall, lift the plinth on
the wall and fit it to the mounting screws.
3. Tighten the upper mounting screws.
4. Insert the lower mounting screws.
5. Tighten the lower mounting screws.
6. Make sure that the plinth is not twisted. When the plinth is in
a correct position, tighten the 3 screws in the lower bracket of
the adapter mechanics.
7. If You're installing more than one plinth
Then
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Note: measurements are
from the edge of the plinth.
If installing additional plinths one upon the other, the distance
between the upper mounting screw holes in first and second plinth
must be 550 mm (23.6 in.) minimum. (IT IS 600 mm IN THE
PICTURE)
NOTE: 100mm is the min. spacing between modules - this picture
shows 150 mm.
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Mounting the modules on a wall
Install one mounting plinth per two modules on a wall. Refer to
Mounting the plinth on a wall for plinth installation
instructions.
CAUTION: Install the modules with front panels facing left or
right. Do not install modules so that the front panels face up or
down.
Note: If the modules are exposed to rain, install the modules so
that the DC terminals are facing down.
If you are going to install Flexi Power Module (FPMA), in wall and
pole installations it should be installed either on the same or
adjacent plinth with the ESMA system module. See Installing Flexi
Power Module FPMA and Recommended module installation order.
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Steps
1. If you are installing the Power Module (FPMA) or Power
DC/DC
24V Module (FPDA), attach the back covers to the casings.
For instructions, see Installing covers in wall and pole
installations.
Tip
Work from wall out when installing covers.
2. Align the holes on the first casing’s bottom with the fixing
studs
on the plinth.
3. Push the casing back until it stops.
4. Attach the casing to the plinth with M5 x 6 mm (0.2 in.)
screws
using thread-locking compund.
5. Align the holes on the second casing’s bottom with the
fixing
studs on the first casing.
6. Push the casing back until it stops.
7. Attach the casings to each other with M5 x 6 mm (0.2 in.)
screws
using thread-locking compund.
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Mounting the modules on a wall
8. Repeat steps 2-7 to install the remaining casings to
separate
plinths.
9. Slide the module(s) into the casing.
10. Attach the module(s) to the casing with M5 x 25 mm (1.0
in.)
screws.
11. Repeat steps 9-10 to install the remaining modules.
12. Attach the cable entries to the casings with two M5 x 6 mm
(0.2
in.) screws.
c. Tighten the screws.
TIP: You can pre-assemble the plinth with two modules on the ground
and then lift the entire plinth. This is the easiest method
especially in pole installation.
NOTE that you must attach specific lifting eye bolts to the
attachment points in the plinth.
Lifting eye bolts (M12) are not included in the delivery. You can
order the LEKA kit separately from your Nokia supplier.
You can also install the casings into the plinth first and then
lift the modules up and slide them in the casings. When lifting a
single module, a lifting bag must be used.
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Mounting the stand-alone BTS on a pole
There are 3 different lengths of bolts available and 4 places for
bolts in the pole mounting brackets. When attaching the brackets to
the pole, use the shortest possible bolts and the holes whose
distance is the closest to the pole diameter. See the table and
figure for more details.
A plinth is required for mounting the modules on a pole. In pole
installation, the maximum number of modules on a plinth is
two.
If the configuration has more than two modules, additional plinths
must be installed. Max. two 3HU modules/plinth.
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Mounting the plinth on a pole
Note: With two plinths on opposite sides, the upper adapter still
has to be up facing a similar adapter on the other side.
Steps
1. Fix the upper pole mounting bracket on the pole and attach the
mounting screws on the bracket.
Make sure that the mounting screws in the upper pole mounting
bracket are on the lower edge of the bracket. Attach the screws
loosely at this point.
2. Fix one half (the one with threads) of the lower pole mounting
bracket on the plinth adapter mechanics with the mounting
screws.
Make sure that the mounting screws in the lower pole mounting
bracket are in the upper edge of the bracket.
3. Lift the plinth on the pole and fit it to the pole mounting
bracket's mounting screws. See Lifting the stand-alone BTS for
lifting instructions.
4. Tighten the mounting screws.
5. Place the counterpart of the lower pole mounting bracket in its
place and tighten the screws.
6. Make sure that the pole mounting brackets are aligned and the
plinth is not twisted.
When the plinth is in a correct position, tighten the three screws
in the lower bracket of the adapter mechanics.
7. If a second plinth is required, install it on the other side of
the pole mounting bracket (if there is enough space).
a. Fix the adapter mechanics on the plinth as described in Step 1
above.
b. Fix the mounting screws on the upper pole mounting
bracket.
c. Lift the plinth on the pole and fit it to the pole mounting
bracket's mounting screws and tighten the screws.
d. Insert the lower fixing screws to fix the plinth on the lower
pole mounting bracket. Tighten the mounting screws.
e. Make sure that the plinth is not twisted. When the plinth is in
a correct position, tighten the two remaining screws in the
lower
bracket of the adapter mechanics.
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Recommended module locations
Installation order varies by configuration. This is a 1+1+1/2+2+2
configuration on a pole (with and without FPDA/FPMA)
The modules must be installed with front panels facing left or
right. Do not install modules so that the front panels face up or
down.
Note: If the modules are exposed to rain, install the modules so
that the DC terminals are facing down.
DC terminals
See also e.g. 1+1+1/2+2+2 configuration on a pole, with
FPDA/FPMA.
NOTE: Remember to first install the plinths with their front panels
to the same direction ;-).
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Steps
1. If you are installing the Power Module (FPMA) or Power DC/DC 24V
Module (FPDA), attach the back covers to the casings.
For instructions, see Installing covers in wall and pole
installations.
2. Align the holes on the first casing’s bottom with the fixing
studs on the plinth.
3. Push the casing back until it stops.
4. Attach the casing to the plinth with M5 x 6 mm (0.2 in.) screws
using thread-locking compund.
5. Align the holes on the second casing’s bottom with the fixing
studs on the first casing.
6. Push the casing back until it stops.
7. Attach the casings to each other with M5 x 6 mm (0.2 in.) screws
using thread-locking compund.
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Mounting the modules on a pole
8. Repeat steps 2-7 to install the remaining casings to
separate
plinths.
9. Slide the module(s) into the casing.
10. Attach the module(s) to the casing with M5 x 25 mm (1.0 in.)
screws.
11. Repeat steps 9-10 to install the remaining modules.
12. Attach the cable entries to the casings with two M5 x 6 mm (0.2
in.) screws.
a. Fix the screws (do not tighten yet).
b. Attach the cable entry to the casing.
c. Tighten the screws.
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Flexi BTS Cabinets
1800
600
600
1550
770
770
When a separate, locked space is required, the modules can be
installed inside a cabinet. Both indoor and outdoor cabinet
versions are available for Flexi BTS installation.
Steps
2. Remove fixing studs from module casings.
3. Fix guide plates and cage nuts inside the cabinet ( NOTE: cage
nuts might be pre-installed) .
4. Slide the module in, and fix to cabinet with screws.
5. Repeat for each subsequent module.
FCIA delivery
-Cabinet key 1
-1+1+1/2+2+2 bypass
-3+3+3/4+4+4 2-way WBC 48 pcs
-Site packs; the site packs are attached with cable ties inside the
cabinet. 2pcs
Contents of the site packs:
-Guide plates 30 pcs
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Purpose
Flexi Cabinet for Indoor (FCIA) is delivered with installation
guide stickers on the left and right rack rails:
The right rail guide shows the recommended unit, cage nut and guide
plate locations for GSM/EDGE 1+1+1/2+2+2 bypass
configurations.
The left rail guide shows the recommended unit, cage nut and guide
plate locations for GSM/EDGE 3+3+3/4+4+4 2-Way WBC
configurations.
Both guides also have recommended unit, cage nut and guide for
installing WCDMA units at the bottom of the cabinet. Cage nuts are
pre-installed in the recommended locations for 1+1+1/2+2+2 bypass
and 3+3+3/4+4+4 2-Way WBC configurations. The recommended locations
are optimised for easiest possible expansion from 1+1+1/2+2+2
bypass to 8+8+8 4-Way WBC.
Always install the Dual TRX Module (EXxA) before the Dual Duplexer
Module (ERxA), and the Dual Duplexer Module directly on top of the
Dual TRX Module.
Steps
1. Fix the guide plates.
Push the front part of the guide plate in place first, and then the
back part.
2. If the configuration is not a 1+1+1/2+2+2 bypass or 3+3+3/4+4+4
2-Way WBC, fix the cage nuts (from the site pack) inside the
cabinet according to the configuration.
The cabinet has U-markings printed on the side rails in 1U
increments. Check the markings to determine the starting place for
module installation. 1U is 44.45 mm (1.75 in.).
Caution: Fix the cage nuts so that the nut brackets point upwards
and downwards instead of left and right.
3. Slide the first module in.
4. Fix the module to the cabinet with screws. For the correct
torque value and bolt size, see Appendix Torque values.
5. Repeat for each subsequent module.
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ESMA horizontal
ESMA vertical
ESMA vertical installation eases expanding beyond 4+4+4 later
on.
Flexi Cabinet for Outdoor (FCOA) is delivered with installation
guides on the right rack rail:
The rail guide shows the recommended unit, cage nut and guide plate
locations for GSM/EDGE 1+1+1/2+2+2 and 3+3+3/4+4+4
configurations.
The guide also has recommended unit, cage nut and guide for
installing WCDMA units at the bottom of the cabinet.
Cage nuts are pre-installed in the recommended locations for
1+1+1/2+2+2 and 3+3+3/4+4+4 configurations.
The cabinet has U-markings printed on the side rails in 1U
increments. Check the markings to determine the starting place for
module installation.
Before you start
Take the site pack from the bottom right corner of the
cabinet.
There are two air guide plates in the site pack.
In Flexi EDGE BTS, when the System Module (ESMA) is in the vertical
racks, the plate is fixed next to the System Module (right-hand
side) to guide air circulation and to provide a fixing point for
cables.
Warning
When handling the modules, always use the antistatic wrist strap.
The cabinet must be grounded, otherwise the antistatic wrist strap
will not work.
Tip
Install the transmission sub-module to the System Module and
connect the DC power cable before installing the System Module in
the cabinet.
Module installation order depends on the configuration. The System
Module (ESMA) can be installed vertically or horizontally as shown
in the figures.
Horizontal installation is recommended if the site will only be
expanded to a 4+4+4 or if optional power modules are installed in
the vertical racks.
Vertical installation is recommended if you are going to expand to
an 8+8+8 configuration later or if MIBBU is used.
Always install the Dual TRX Module (EXxA) before the Dual Duplexer
Module (ERxA), and the Dual Duplexer Module directly on top of the
Dual TRX Module
Steps
1. Fix the guide plates (from the site pack) inside the cabinet
(NOT if only the vertical rack is used).
2. If the configuration is not a 1+1+1/2+2+2 or 3+3+3/4+4+4
configuration, fix the cage nuts (from the site pack) inside the
cabinet according to the configuration.
For more information, see Configuration Reference Guide.
Tip
Use the dummy panels to determine the cage nut locations.
3. Slide the first module in.
4. Fix the module to the cabinet with screws. Tighten to 5
Nm.
5. Repeat for each subsequent module.
6. Install dummy panels into the empty slots.
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Installing optional modules
Flexi EDGE BTS uses DC power. In a BTS site with AC feed only, a
Flexi power module FPMA (or MIBBU) is required for converting the
AC to DC before feeding the current to the system module.
Flexi power module (FPMA) consists of connector blocks and four
slots for AC/ DC sub-module (FPAA) or battery sub-module
(FPBA).
FPMA can include:
one FPAA and three free slots for expansion.
INSTALL OPTIONAL MODULES:
Installing Flexi Power Module (FPMA)
Note: If you are going to install Flexi Power Module (FPMA), its
recommended position is at the bottom of the module stack,
underneath the first RF module. For more information on FPMA
installation, see Installing Flexi Power Module FPMA
Steps
1. Install Flexi power module (FPMA).
2. Remove the IP protection from the left hand side of the
FPMA.
3. Detach the screw and pull out the AC filter plate.
4. Connect AC power feed cable to the AC/DC sub-module
(FPAA).
5. Insert AC filter plate and fix with screw.
6. Connect PE cable (GNY) with M5 screw.
7. Fix the DC cable to FPMA right hand side with screws.
8. Connect the DC power feed cable from FPMA to system module. For
detailed instructions on connecting the DC power cable, refer to
Connecting DC power feed section.
9. Install the FPAA submodules required by your configuration.
Connect the AC cable from FPAA to FPMA.
10. If you are using battery backup Then Install the FPBA
submodules required by your configuration.
11. If you are using alarm cable Then Connect the alarm
cable.
a. Remove the IP protection from alarm cable connectors in FPAA and
FPBA.
b. Chain the sub-modules together with the alarm cable 994819 from
left to right.
c. From the leftmost sub-module, connect the alarm cable 994820 to
System Module.
12. Connect the DC cables to all the sub-modules.
13. Check that the cable connectors IP gaskets are firmly in
place.
14. Turn on the operating voltage for FPMA.
15. Power up the FPAA and FPBA sub-modules, and check that the LEDs
are green.
16. Install the FPMA module front panel cover.
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After completing this module, the participant will be able
to:
Theory:
Identify the interfaces and connectors of the Flexi EDGE BTS
modules and sub-modules in respect to configuration
Practical:
Install and route cables on the Flexi EDGE BTS
This section deals with all other cabling except RF cabling (Tx and
Rx), which is handled in Module 4.
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PWR1/7
PWR2/8
PWR3/9
PWR4/10
PWR5/11
PWR6/12
PWR
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Transport submodule interfaces
FIPA: balanced E1/T1,
-RJ48 has a keyed connector and a notched jack.
-RJ45 does not have a key or a notch.
-Both have 8 pins.
An RJ45 connector fits an RJ48 jack but the key on an RJ48
connector does not allow it to plug into an RJ45 jack
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Transport submodule interfaces
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ERxA Dual Duplexer Module interfaces
RxAO: co-siting output from RxA antenna line. Cable from RxAO can
be connected to external BTS. (Use external diplexer/triplexer or
co-combiners. )
RxAI: co-siting input from an external BTS; provides diversity to
Flexi EDGE. Cable from external BTS can be connected to RxAI. (Use
external diplexer/triplexer or co-combiners.)
ExtA, ExtB: outputs to external BTSs to provide them with Rx
diversity. Cable from ExtA/ExtB can be connected to external BTS.
(Use external diplexer/triplexer or co-combiners.)
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Cable routing principle in stack installations
There are two cable entries in Flexi EDGE BTS, internal and
external. Internal cable entries are located between the modules,
and external cable entries are installed on the sides of the
modules
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Cabling principles
In wall and pole installation, cables should be routed through the
bottom cable entry and sloped down from the connectors whenever
possible to help prevent water ingress.
Caution: Incorrect cables and seals may not provide secured weather
protection. In outdoor installations, including the outdoor
cabinet, use only tested IP55 class outdoor cables with seals
provided by Nokia. This is also recommended for indoor
installations.
Make sure that the connector seals are firmly in place and IP caps
are properly installed on the unused connectors.
Do not overbend any cables. See the following table for the allowed
bending diameters.
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Bending diameters of Flexi EDGE BTS cables
-For the bending diameter of antenna jumper cables, refer to the
cable manufacturer.
-Static is the allowed bend while the cable is fixed. For example,
while the cable is tied to the side of the cabinet
-Dynamic is the allowed bend while the cable is in motion. For
example, if you're routing the cable through the cable entry.
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Grounding the BTS modules
When modules are installed inside a cabinet, no separate grounding
cable for modules is required as the cabinet provides adequate
grounding.
Cabinetless installations: if the BTS has more than one plinth (for
example in wall or pole installations), connect the main ground to
one of the plinths and ground all the modules to that plinth.
It is also possible to ground the modules to their own plinths
first and then ground the plinths to the plinth that is connected
to the main earth ground.
Grounding
Cables
Steps
1. Ground the plinth to the site main ground.
2. Connect the grounding cable to the grounding point in the module
front panel.
3. Route the grounding cable through cable entry.
4. Connect the other end of the cable to the grounding point in
plinth.
5. Repeat steps 2-4 to each of the modules.
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Grounding the BTS modules
One module per casing must be grounded to the plinth. If there is
only one module in the casing, then that module is grounded to
plinth.
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First ensure power is switched off at main circuit breaker.
Route the external power cables through the white plastic cable
clamp, which is on the side of the casing.
The System Module (ESMA) is delivered with boots for 2 or 4 AWG (25
mm 2/0.04 sq. in. or 35 mm 2/0.05 sq. in.).
Before you start
-Check that the System Module (ESMA) is installed
-Flexi Power Module (FPMA) or Flexi Power DC/DC 24 V Module(s)
(FPDA) are installed if 24 VDC or AC input power is used.
-mains breaker is OFF
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Connecting bus cables
In stacked, wall and pole installation, the cable is routed via
internal cable entry when the System Module and the Dual TRX Module
are installed on the same plinth.
If the System Module and Dual TRX Modules are installed on
different plinths (for example in wall or pole installations), the
cabling between those modules is routed via external cable
entries.
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Note
The cable is routed via internal cable entry when System and DTRX
module are installed on the same plinth. If system and DTRX modules
are installed on different plinths (for example in wall or pole
installations), the cabling between these modules is routed via
external cable entries.
The internal power cables are connected between the System module
and each DTRX module, and is used to distribute power to the DTRX
modules.
Note that by default the System Module will switch on each power
port at the start up. If Dual TRX Modules are connected to the
System Module although they are not used in the actual
configuration, they are powered on and will consume some power. To
disable power, disable the ports with Nokia Flexi EDGE BTS
Manager.
Steps
1. Remove the connector seal on the module to uncover the
connector.
2. Pull back the connector seal on the cable.
3. Connect the cable to the System Module and the other end to the
Dual TRX Module.
4. Connect the internal power cable to the Dual TRX Module.
5. Route the cable through the external cable entry slots.
6. Repeat steps 1-4 for each of the Dual TRX modules in the
configuration.
7. Make sure that all the connector seals are properly
installed.
8. Tie loose cabling to the cable clamps on the side of the
casings.
TIP: Make a function check before tying down the cables.
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Note
When connecting BTS external cabling in wall or pole installations,
route the cables via the lower cable entry when possible.
Tip
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Connecting transmission cables
Note
When connecting BTS external cabling in outdoor site wall or pole
installation, route the cables via the lower cable entry when
possible.
Steps
1. Remove connector seals from the transmission sub-module
connectors. Store the seals for later use.
2. Route the transmission cables through the cable entry.
3. Pull back the connector seal covering the transmission cable
connector.
4. Connect the cable to the transmission sub-module.
5. Push the cable connector seal firmly in place.
6. Repeat steps 1-3 for all the transmission cables required for
your configuration.
7. Make sure that all the connector seals are properly
installed.
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E1/T1/JT1 balanced cable
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Creating typical configurations
1 ESMA System module
3 EXxA DTRX modules
6 antenna jumper cables
Before you start
Steps
1. Connect the antenna jumper cables to each DDU modules' antenna
connectors. NOTE that both antenna jumpers should be routed through
the cable entry on the right.
2. Commission the BTS to support 2+2+2 configuration.
Further information
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2+2+2 by-pass stack transmission IF and alarm cables
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Creating typical configurations
1 ESMA System module
6 EXxA DTRX modules
6 antenna jumper cables
Before you start
Steps
1. Connect the antenna jumper cables to each DDU modules' antenna
connectors as shown in the figure.
2. Commission the BTS to support the configuration.
Further information
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4+4+4 WBC 2:1 alarm and transmission IF cables
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Installing module front panel cover
Check that all the IP seals and rubber boots covering the module
front panel connectors are firmly in place.
Make a functional check before installing the front covers.
In wall and pole installations: Before installing the cover, attach
the first and second snap hooks of the safety catch to the front
cover. Attach the third snap hook of the safety catch to the
external cable entry.
Steps
1. Install the front cover and fix the knurled-head screws as
tightly as possible without tools.
2. Tighten the screws to 2.5 Nm with a Torx T25 screwdriver.
Caution
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