MobilePartners MP2110A User manual

MobilePartners MP2110A
Operator selectable
3G repeater
User’s Manual
MobilePartners.com
Extending mobile coverage

Preface
This User Manual provides installation, conguration, operation and maintenance guidance of the
repeater. Specications are also provided at the end of this User Manual in order to help users better
understand the repeater. Please read this user’s manual thoroughly and follow the instructions outlined
in this manual to ensure a long life span and a trouble-free repeater unit.
Warranty
Lightning protection must be done for all outdoor antennas. Damage to power modules, as a result of
lightning is not covered by the warranty.
Switching on the AC or DC power prior to connection of antenna cables is considered as an incorrect
installation process and therefore faults arising thereafter are also not covered under the warranty.
This entire manual should be read and understood before operating or maintaining the repeater system.
We assume no liability for customer's failure to comply with the precautions mentioned. This warranty
will not cover such failures to comply.
Safety Information
Do not operate equipment in an explosive environment. Appropriate AC or DC power needs to be sup-
plied to the repeater. To avoid power supply spark, please perform the grounding connection of the
equipment.
In order to avoid equipment damage or human injury by lightning, static electricity and other phenom-
enon of leakage electricity, we suggest all products must do the electric-discharge of the electrical
grounding in setup process. Incorrect power settings can damage the repeater and may cause electrical
related injury to the user.
Acknowledgment
Thank you for purchasing the MP2110A repeater. Strict quality control system procedures are imple-
mented to ensure you a high quality product; with numerous cellular operators acknowledging the
product to be a high performance, low interference, transparent and simple to operate and maintain.
This document is written to the customer service personnel, who install, congure and commission the
repeater system in a cellular network.

Contents
1 INTRODUCTION
1.1 MP2110ASeries Repeaters
1.2 General Installation Layout
1.3 Advantages
2 INSTALLATION
2.1 Isolation
2.1.1 Self-Oscillation Resistance
2.1.2 The Isolation Value
2.2 Precautions and Preparation
2.3 Donor Antenna Installation
2.4 Server antenna Installation
2.5 Repeater Installation
2.5.1 Installing the Repeater
3 COMMISSIONING
3.1 Downlink Output Power
3.2 Repeater Conguration
3.2.1 Start-up the Repeater
3.2.2 Repeater Settings
4 MAINTENANCE
4.1 Troubleshooting

1. Introduction
1.1 MP2110ASeries Repeaters
The MP2110ASeries Repeater is compact in size and light in weight. Hence, the installation of the
MP2110ASeries Repeater is easy, simply just plug and play. With the control panel in front of the
repeater, the repeater status can be known during installation.
Figure 1 LED Indicators
1.2 General Installation Layout
4
1.2 General Installation Layout
Figure 2 Profile
For indoor application, a typical installation layout of the Broad Band Repeater is
shown in Figure 1. The Yagi antenna is used as the donor antenna, and is connected to
the repeater. Omni and panel antennas are being used as the server antennas.
The donor antenna is placed outside of the building, while the repeater is placed inside the
building to extend radio coverage to the dead zones.
1.3 Advantages
 Fast & easy Installation
The installation of a repeater is easy and simple. With its plug and play design,
installation simplicity, and operational user friendliness, these features appeal greatly to
many operators for the purpose of indoor coverage or for temporary coverage during
network optimization.
 Smart Function
Compare to the worldwide repeater brand, the J3F-A-20 series has a smart function
which can be activated via the front panel. This smart function can prevent UL interference
and self-oscillation caused by insufficient isolation between donor and server antennas,
and also setup parameters and keep optimal condition automatically; the only thing for
users is just activating this function by front panel.
Notify that the users can’t adjust by manual setting when smart function is initiated.
Figure 1 Prole
For indoor application, a typical installation layout of the Broad Band Repeater is shown in Figure 1. The
Yagi antenna is used as the donor antenna, and is connected to the repeater. Omni and panel antennas
are being used as the server antennas.
The donor antenna is placed outside of the building, while the repeater is placed inside the building to
extend radio coverage to the dead zones.
1.3 Advantages
Fast & easy Installation
The installation of a repeater is easy and simple. With its plug and play design, installation simplicity, and
operational user friendliness, these features appeal greatly to many operators for the purpose of indoor
coverage or for temporary coverage during network optimization.
MP2110Aseries has a smart function which can be activated via the front panel. This smart function can
prevent UL interference and self-oscillation caused by insucient isolation between donor and server

antennas, and also setup parameters and keep optimal condition automatically; the only thing for users is
just activating this function by front panel.
Note. The users can’t adjust by manual setting when smart function is active.
Auto Level Control
The 20dB ALC is used to maintain steady output power even when the donor source signal uctuates.
Also when the ALC is activated, the ISOLATION LED indicator would be lighted in orange, which means
the Isolation may not be enough. It also prevents UL interference and self-oscillation from insucient
isolation between donor and server antennas.
Antenna isolation testing
P2110Aseries product also has a repeater mounted antenna isolation detection function. Equipment
installation completed boot automatically after the onset detection transceiver antenna isolation, if
transceiver antenna isolation can not meet the installation requirements, the device will automatically
reduce the gain to guarantee the equipment in normal working, not self-excitation vibration, guarantee
not to interference protection of base station, repeater itself. At the same time alarm exhibit of lanterns
bright red light alarm.
Device LED gain display panel will display device is reduced after the equipment current gain state, which
has the advantages of convenient construction, but also to protect the base station equipment, and does
not generate interference.

2. Installation
2.1 Isolation
Isolation is an important concept for the repeater system, and it is one of the factors that aect the loca-
tion of the donor antenna and the location of the server antenna. In the repeater system, the isolation
must be enough, which means the donor antenna cannot be installed too close to the repeater. But what
is isolation? The isolation is the propagation loss between the donor antenna and the server antenna
which needs to be at least 15dB higher than the gain value of the repeater. Non-compliance to this crite-
rion would result in poor signal quality or poor signal strength in the coverage area and the amplier of
the repeater may also be damaged.
Isolation => Repeater Gain + 15 dB
2.1.1 Self-Oscillation Resistance
Self-oscillation is a phenomenon that would occur when the isolation for the repeater system is not
enough. In other words, insucient isolation between donor and server antennas would result in self-
oscillation. Which means part of the signal that is being amplied by the repeater radiates back towards
the donor antenna and got picked up by the donor antenna and went through the repeater amplication
process again. Severe oscillation issue would result in poor signal quality and at times it can even damage
the repeater ampliers. Self-oscillation will deteriorate the signals inside the coverage area and interfere
towards the BTS.
2.1.2 The Isolation Value
The precise estimation of the isolation value can be obtained via a physical test measurement. This test
measurement is done at the actual environment where the donor antenna and the server antenna are
installed for a repeater system. The test measurement procedures are
1 Connect the signal generator to the donor antenna and transmit a signal with a frequency. Choose
frequency 1995MHz to do the test. In simple words, choose the idle frequency of the system to do the
test) of certain power level from the signal generator.
2 Connect the spectrum analyzer to the server antenna and scan for the known frequency (The fre-
quency used by the signal generator). Mark the received power level on the spectrum analyzer.
3 Subtract the power level received at the spectrum analyzer from the output power (OP) level of the
signal generator to obtain the isolation value.
Isolation (dB) = Output Power from the signal generator – Received Power on the spectrum analyzer
Transmit a strong Output Power from the Signal generator is recommended (excess of 20dBm) for easy
recognition and detection by the spectrum analyzer.
2.2 Precautions and Preparation
1 Ensure the power applied to the repeater is within its working range. A separate circuit breaker is
recommended.
2 Ensure the donor antenna is installed at the location where signal from the donor BTS (Node B) is
good enough.
3 Ensure there’s sucient isolation between the donor and server antenna.
4 The repeater is designed for indoor application. Ensure the location of the repeater is dry and
ventilated.
5 Ensure there are adequate resources to handle the weight of the repeater. 6. Some electronic parts
contain carcinogenic constituents, please handle the repeater with care, and discard the in a safe place
if necessary.

2.3 Donor Antenna Installation
The location of the donor antenna strongly inuences the performance/characteristics of the RSCP and
Ec/No of the intended coverage area.
The donor antenna is usually installed outside of the building, pointing towards the donor BTS (NodeB)
for best reception of the receiving signal. When choosing the location for the donor antenna, there are 3
criteria need to be met:
1 The RSCP of the donor signal is suggested to be in the range of -60dBm to -70dBm.
2 (Ec/No)AS_CPICH > -7dB; AS_CPICH is the Pilot Channel in Active Set (Serving Cell)
3 (Ec/No)AS_CPICH – (Ec/No)MS_CPICH > 6dB
The donor antenna should be installed at least 3 meters above the ground but not higher than 7th oor
of any building. If the donor antenna is located at a high oor, it would be dicult to obtain a dominant
BTS signal from nearby BTS.
A lightning rod is necessary when the donor antenna is located at a relative high position. A 50 ohm light-
ning arrestor could be connected between repeater and donor antenna for better protection.
Waterproong of the antenna installation is also important, and it can be done with the following
process:
1 Use the donor antenna cable to form a half loop at the point of entry into the house so that rain water
would drop o instead of owing inside along the cable, and also form a half loop before the antenna
cable connects to the repeater as the waterproof measure.
2 Secure the cable entry point. Seal the donor antenna’s connector and repeater’s connector with a
waterproof sealant.
2.4 Server antenna Installation
Find the right spot to install the server antenna so the required coverage can be fully covered by the
repeater is one of the most important concepts that need to be considered.
However, the following three points should be considered while installing the server antenna.
1 Do not install the repeater near metal or obstacles that may inuence its coverage performance.
2 It is suggested to install the repeater at least 2m above the oor for the best coverage.
3 The server antenna should not be installed to close to the donor antenna to avoid issues with
isolation.
2.5 Repeater Installation
2.5.1 Installing the Repeater
Use the hanger that comes with the repeater package, and place the hanger on the wall where repeater
is going to be installed, use the hole on the hanger to secure the hanger on to the wall.
A lightening arrestor needs to be connected to the repeater’s BTS port when the donor antenna is
installed in a high position. Grounding is essential for the arrestor to work.
Plug the power cable to the repeater rst before plugging in the power cable to the mains socket. Use
the power cable that comes with the package.

11
 Use the back of the repeater to hang on the Holder and complete the installation.
 Connect the donor antenna cable to the BTS port of the repeater and the server
antenna cable to the MS port of the repeater.
 A lightening arrestor needs to be connected to the repeaters’ BTS port when the donor
antenna is installed in a high position. Grounding is essential for the arrestor to work.
 Plug the power cable to the repeater first before plugging in the power cable to the
mains socket. Use the power cable that comes with the package.

3. Commissioning
This chapter outlines the process to optimize the performance of the repeater. The gain setting, isola-
tion concept, and downlink output power.
3.1 Downlink Output Power
The downlink output power of the repeater mainly depends on the input signal power and the repeater
gain. The gain is the amplifying indicator for both uplink and downlink in the repeater, and it can be
adjusted. Hence, the output power of the repeater can be estimated.
Signal Input Power + DL Gain = DL Output Power
For any given input signal power, its corresponding output is increased by the gain of the repeater. To
ensure the maximum output power, the following condition should be met.
DL Gain = Min [(DL Output Power – Input Power), Max. DL Gain]
If the input signal amplied by the gain set exceeds the rated set output limit, the ALC (Automatic Level
Control) will be triggered. The ALC ensures that the maximum output power of repeater is maintained
at a certain point and does not overdrive the repeaters amplication circuit.
3.2 Repeater Conguration
The MP2110Aseries repeaters are designed with plug and play ability. The conguration for these
repeaters is not necessary, simply just switch the Smart function on, and the repeater would auto adjust
its gains according to the environment condition.
3.2.1 Start-up the Repeater
Note: It is suggested that only when isolation is 15dB higher than repeater’s gain then the repeater can
be switched on.
Make sure power supply cable is connected to the repeater properly, and the voltage is within repeat-
er’s voltage working range: 110/220V ± 20%
Plug the power cord into the proper socket. Once the repeater is on, it requires several seconds for
initialization.
When Repeater is close to the BTS, hence there is a high input power at the donor antenna. Even with
the smart ability of the auto gain adjustment, it is still recommended to add an RF attenuator at repeat-
er’s BTS port to avoid interference to the BTS.

3.2.2 Repeater Settings
After switching on the repeater, the repeater would automatically adjust both uplink and downlink gain
value based on the repeater installation environment if the smart function is turned on. The repeater can
also be adjusted manually via the front control panel.
Figure 5 Front panel of the repeater
Buttons Function Explanations
Buttons Function Explanations
Intelligent mode key Press this key, the repeater can convert between intel-
ligent mode and normal mode. Press up to two times to
switch. Make sure that the Smart LED changes.
Gain attenuation key Intelligent mode o, Press this key, the uplink and down-
link gain will reduce. The greatest reduction is 31dB. Each
press of the key is 1 dB.
When Intelligent mode turned on this key is invalid.
Gain increase key Intelligent mode o, Press this key, uplink and downlink
gain will increase. Each press of the key is 1 dB.
When Intelligent mode turned on this key is invalid.
LED Function Explanations
Power LED DC-ON, Power LED is Green, Indicates that the power
supply is normal.
Smart LED Green: Repeater is working in intelligent mode. The
repeater parameters is set automatically
O: The repeater is working in normal mode. The repeater
parameters need to be set manually by the + or - key
Automatic Gain Control LED Green: No problems
Red: AGC is active and working at it’s limits. Indicating
strong signal or low isolation between antennas
Isolation LED Green: Isolation testing OK
Red: Isolation testing failed. Increase distance between
antennas or make other arrangement to increase isolation.

Signal strenght indicator
Downlink input
power range
(Solid light)
O < -71 dBm Bad, might be problems or will not work at all.
≥ -70 dBm < -66 dBm Will probaly work but limited range indoor. Instal-
lation can be sensitive to outdoor conditions like
rain/snow.
≥ -65 dBm < -61 dBm Works, but not at optimal performace.
≥ -60 dBm < -56 dBm OK
≥ -55 dBm < -51 dBm Very good.
≥ -50 dBm Works at optimal performace and maximum
internal coverage.
Manual gain mode
When not using Smart Mode, you can manually lower your repeaters gain by adding attenation. Every
press och the - or + button will manually decrease (or increase) the total gain by 1 dB. You can manually
decrease gain from 70 down to 36 dB.
While pressing + or - the LED bars will be blinking to show you your settings. After 1-3 seconds the LED
bar will automatically stop blinking and start showing Signal strength again. The new signal strenght is
showing including the new gain/attunation.
This can be very useful if you have very strong input signal or if you need to keep internal repeater
signals from leaking out from your house/appartment/oce or if your operator is experiencing interfer-
ence from your repeater.
LED Bar (BLINKING) Gain Attunation
70-64 dB 0-6 dB
63-57 dB 7-12 dB
56-50 dB 13-18 dB
49-43 dB 24-29 dB
42-36 dB 25-30 dB

4. Maintenance
4.1 Troblueshooting
This table oers the fundamental guidelines for troubleshooting advice for the MP2110A series. Before
sending the repeater back to the factory for service, please check the troubleshooting measures listed
below rst.
Status Possible reason Solution
No LED is lit No AC power. Check if the power cord is
plugged into the repeater and
the socket properly.
No amplication after repeater
installed.
1. Your phones is showing LTE or
GSM signals.
2. Donor Signal is poor
3. Bad service antenna/cables
4. Wrong operator band?
1. If you have a LTE/4G phone it
would probably lock to LTE/4G
signal (even if that signal is very
low) when you are not making
phonecalls. This is normal.
Test by locking your phone in 3G
only mode or test by making a
phone call and see if it switches
to 3G.
2. Ensure signal strength and
signal quality at the donor
antenna is good enough. Check
signal meter on the repeatre for
input signal
3. Check cables and connector to
the internal service antenna.
4. Check the selected operator
band by the software.
Coverage decreased after certain
period.
1. Donor signal strength
decreased.
2. The quality of feeder cable
system decreased due to oxidiza-
tion especially in harsh condi-
tions, or cable damage by mice or
insects.
3. Change of indoor structure or
furniture.
1. Check the signal strength at
donor antenna. Re-locate the
Donor Antenna to solve problem.
2. Check the VSWR of the feeder
cable system to nd out the
faulty point and then replace it
3. Reconsider the position of
antennas and the layout of
cables if such change occurs.
Bad Ec/No Quality inside the
coverage area
1. Self-oscillation occurred
severely. ISOLATION LED may be
lighted in red.
2. Poor Ec/No Quality from donor
source
1. Check the isolation between
donor and server antenna.
2. Adjust the donor antenna
direction or relocate the donor
antenna.
Call drop frequently 1. Self-oscillation occurred.
2. Signal handover frequently.
3. Donor BTS problem
1. Check the isolation between
donor and server antenna. Turn
on the Intelligent Mode
2. Make sure the RSCP for pri-
mary BCCH > than 1st neighbor
BCCH 6dB
3. Consult the operator’s RF
engineer.