JDTECK JD60-9-19-LC Wireless Cellular Repeater User Manual

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Abbreviations…………………………………………..………………………………..2
Terminology
Meaning
Safety……………………………………………………………………….……………….2
AGC
BTS
CDMA
dB
DL
Donor
GSM
iDEN
LCD
LED
LTE
MS
PCS
RF
UL
Automatic Gain Control
Base Transmitting Station (Cell Tower)
Code Division Multiple Access
Decibel – (A unit of measure for signal strength)
Downlink (Communication channel from cell tower to mobile device)
Outdoor Antenna (Antenna that donates an input signal)
Global System for Mobile Communications
Integrated Digital Enhanced Network
Liquid Crystal Display
Light Emitting Diode
Long Term Evolution
Mobile Station
Personal Communication System
Radio Frequency
Uplink (Communication channel from mobile device to cell tower)
1. Preface………………………………………………………………………………... 3
2. Introduction / Features & Functions……………………………………..5
3. Installation…………………………………………………………………………….7
3.1 Installation Procedure………………………………………...………………8
3.1 Installation Procedure – Con’t……………………………………………9
3.2 Antenna Installing and Cable Wiring………………………..………10
3.3 Manual Gain Adjustment - UL / DL……………………..……………11
User Warnings – MUST READ!
3.5 Trouble Shooting………………………………………………..…………….16
1. This repeater must ONLY be used for the purpose it was
intended for. Making any alternations to the design layout
without first consulting with a trained technician can result in
interference to the operator’s network and liability by the end
user.
Specifications……………………………………………………………………..…..17
2. Please read this entire manual carefully before using this product!
3.4 Testing……………………………………………………………………….……..15
FCC Statement………………………………………………………...……….……18
Repeater Settings….………………………………………………...…………..…19
3. Only the power supply that came with the repeater should be
used at all times. It is highly recommended that the repeater
is grounded and lightning protection used.
4. Do not attempt to open any part of the repeater. This will void
the warranty and can cause an electric shock. Electrostatic
can also cause damage to the internal components.
5. Please keep away from any heating-equipment, because the
repeater will dissipate heat when working. Do not cover the
repeater with anything that influences heat-dissipation.
6. Do not place or mount the repeater in a location that is exposed
to the elements. This will void the warranty and can cause an
electric shock.
1
1. Preface
Nowadays, personall mobile communica
ation is developing at
a a very rapid
ra
ate and persons are
e having higher expectations and dema
ands on the
mobile communicatio
on network. A high-s
speed and high-cap
pacity
ccommunication netw
work has become the
e trend of future dev
velopment. At
present second-gene
eration (2G) mobile communication sys
stems like GSM is
widely used all over the world, but mosttly in developing nattions, whereas
th
hird-generation (3G) and forth-generation (4G) mobile com
mmunication
te
echnology is widely used in Europe, No
orth America and Ko
orea.
For example, Code Division
Multiple Ac
ccess (CDMA) techn
nology is used
which greatly extend
ds the signal width -- the so-called spre
ead spectrum
modulation. As an ad
dvanced wireless co
ommunication techn
nology, it features
good multi-channel access
capability, anti-multipath fading capacity, antin
narrowband interfere
ence capability and security protection capabilities.
The CDMA network has, what is called a “cell breathing efffect”. That is, the
ccoverage will gradua
ally shrink as the cell load increases. Th
he cell breathing
effect makes networrk planning more complicated. The CDM
MA technology
ittself determines that the load of the nettwork at the early sttage of
cconstruction should be higher than that of the GSM networrk. Therefore,
adding carriers and roaming
agreementts between them is a major means of
expanding network capacity,
and adding
g BTS’s or Node B base
stations is
an auxiliary means of
o capacity expansio
on. The aim of the ra
adio network
should to provide continuous coverage, instead of hotspot coverage.
In such a background, JDT
TECK has successfu
ully developed adva
anced
ers that are applicab
ble to any mobile ne
etwork and indoor diistributed
repeate
antenna
a system. (DAS) Re
epeaters are availab
ble to support any te
echnology
or frequ
uency used today.
se a large amount off BTS or Node B de
evices are deployed
d in densely
Becaus
populatted urban areas, the
ere is usually no larg
ge blind area. Repe
eaters are
simply used
to cover small blind areas and pro
ovide signal coverage inside
building
gs or sub-ground loc
cations. Typically, ra
adio frequency (RF)) repeaters
are use
ed when optical fiberrs are not available in buildings or when using a
fiber so
olution is not cost efffective.
Since th
he number of repea
aters on a cellular ne
etwork usually incre
eases with
the num
mber of buildings to be covered in a spe
ecific sector, multiple repeaters
may end up feeding from one
o BTS or Node B.. In view of this, only
y low
ed repeaters (below 1 W) should be dep
ployed in densely po
opulated
powere
areas.
Repeaters adopt an integra
ated module concep
pt. It is compact in structure
and com
mbines the RF module and the monitorring mode in one un
nit. Owing to
its high selectivity, stability and reliability, repe
eaters are widely applied to
indoor signal
distribution in
n small areas such as
a office buildings, meeting
rooms, hotels, tea shops, night
clubs, and cafe
es where signals arre shielded.
er shadow areas ou
utdoors. Such repea
aters are
They arre also used to cove
very suitable to signal optim
mization in densely populated urban arreas.
The cost of wireless repeaters are relatiively low and the co
onstruction is
simple. They have th
he functions of a mini BTS or Node B. On
O the network,
re
epeaters can help a BTS or Node B to achieve the optima
al network quality
at a minimum cost.
A cellular tower typic
cally supports a larg
ge capacity of users but is affected by
a relatively small cov
verage footprint. Therefore, the number of users who can
access it is limited and a large amount of
o channel resource
es are wasted. The
best way of solving this
problem is to us
se repeaters to exte
end the BTS
ccoverage to fully utiliize the telecommun
nication resources. For
F example, in
ccellular network cons
struction in Asia, rep
peaters are no long
ger considered as
peripheral devices to
o cover blind areas in the network but as
a part of the core
network itself.
The complete covera
age is not only a pre
erequisite for a high
h quality mobile
ccellular network, but also a factor that attracts users. From this point of view,
a network operator should
first considerr providing a radio network
with a
ccomplete coverage. The seamless cove
erage in urban areas
s, heavy traffic
areas, office building
gs, super markets, and
a top grade hotels
s is the first step
to
o consummate the network.
Figure 1 sh
hows the applications of the repeaters.
2
2. Introduction
This full duplex mobile communications repeater from JDTECK is perfect
fo
or providing a wirele
ess improvement in the cellular receptio
on inside a large
office building, under-ground parking lott, warehouse, aparttment building,
shopping mall, outdo
oor park or any othe
er large coverage arrea requirement.
y of an area by receiving, amplifying,
Itt is designed to improve the call quality
filtering and re-transmitting the signals from
the base statio
on into a specified
area via a distributed
d antenna system (D
DAS) or distributed antenna grid.
To maintain safe and
d specific output sig
gnal levels, this repe
eater has built-in
signal oscillation dettection circuits with color changing LED
Ds to indicate its
environmental status
s. The Alarm LEDs located on the frontt of the unit
(D
Downlink Alarm & Uplink
Alarm) will ch
hange color from gre
een to amber or
re
ed, (depending on the
t intensity) if the system
detects signal oscillation in
either band, or if the input signal is beyo
ond a safe limit so as
a to avoid
in
nterference to the ce
ellular network, the repeater will indicatted this.
This repeater also ha
as an automatic gaiin control (AGC) fea
ature which will
re
educe the output po
ower of the repeaterr if oscillation is dete
ected. This range
ccan vary from 15-20d
dB depending on th
he model of your rep
peater. If the
re
eduction in gain nee
eded to take the uniit out of alarm excee
eds the range of
th
he AGC, then the en
nd user can make use
u of yet another fe
eature of this
re
epeater called manu
ual gain control (MG
GC). This allows the
e end user to
fu
urther reduce the ou
utput gain of the rep
peater by using the push buttons on
th
he front of the unit to navigate through the liquid crystal dis
splay (LCD) and
manually attenuate (reduce)
the repeate
er’s output gain of either
the uplink or
downlink individually
y.
JDTECK’s repeaters
s also feature a Netw
work Safe / MUTE feature
that
automatically shuts-d
down the transmiss
sion side of the repe
eater to protect the
ccellular network if no
o adjustments are made
to eliminate ala
arm readings on
th
he repeater’s LEDs. You will want to make
sure the LEDs remain green at
all times for optimum
m system performan
nce.
Featu
ures & Functio
ons










Slleek attractive hous
sing.
LE
ED indicators to mo
onitor environmentall status.
Su
upports all technolo
ogies including, GPR
RS, EDGE, CDMA&
& UMTS.
Lo
ow power consumpttion.
ALC function. (Auto Limit
Control – will not
n exceed max rate
ed power)
AG
GC function. (Autom
matic Gain Control)
MGC
function. (Manu
ual Gain Control)
MUTE
function. (Shu
uts down if no chang
ge in environmental conditions)
LC
CD Interface. (User Friendly Digital Inte
erface)
Heat Sink cooling fins
s to dissipate heat quickly
and efficienttly
Grounding Stud
UL Allarm
DL Alarm
DC Power Plug
Power
Switch
Up / Down
n Button
Outdoor Port
Enter Button
Heat Sink Fins
LCD Screen
Indoor Port
The main cause of signal
oscillation is when
any of the indo
oor antennas are
to
oo close in proximity
y to the outdoor anttenna on the roof.
Alarm LED status ch
hart and recommend
ded action:
Green - System func
ctioning well / no errors.
Amber - Mild detection of signal oscillattion.
Red - Strong signal oscillation.
Off – Repeater is no
ot transmitting (MUT
TE Activated)
3. Installation
3.1 Installation Procedure
1. The repeater’s main function is to improve weak RF signals to an area.
2. Selecting the appropriate accessories that are compatible with the
frequency of the repeater is very important for optimal system
performance. An 850Mhz Repeater needs to be used with accessories
that supports the 850Mhz band. In the same way, choosing accessories in
the 1900Mhz Band needs to go with a 1900Mhz Repeater etc. For dual
band or multi-band repeaters, please ensure the peripheral components
used supports all the frequencies needed.
3. The signal strength from the outdoor antenna directly affects the efficiency
of the indoor coverage. It is very important to choose the location of the
outdoor antenna carefully. With this in mind, it is not recommended that
the donor antenna be installed in an attic or at the side of a building.
4. The repeater is a two-way (full duplex) signal amplifier. Therefore there
needs to be proper isolation between the outdoor antenna and indoor
antenna in order to avoid signal oscillation on the repeater. (Interference)
There needs to be more than 15dB of isolation above the repeater gain.
For example, if the repeater gain is 60dB, then you need 75dB of isolation
between outdoor antenna and indoor antenna.
5. The repeater gain is adjustable for both the uplink / downlink individually.
Depending on the environment, the end-user may need to adjust the
repeater gain to achieve optimum performance and desired coverage.
Site Survey
Installation Planning
Link Budget Calculating
Install Outdoor Antenna
Cable Installation
Install Repeater
Install Indoor Antennas
6. The repeater is designed to amplify the input signal, filter it and retransmit
it to the desired area via service antennas. In order to reach the best
performance, the outdoor signal should be greater than -80dBm, and not
over +10dBm. If the outdoor signal is very weak, then a pre-amplifier may
be used.
7. Calculating the Link budget before setting the repeater gain.
Signal Measurement
Gain Adjustment
Link budget calculation:
Outdoor signal strength – Loss of accessories (cable, connectors,
splitters, Directional Couplers) + Antenna gain (outdoor antenna, indoor
antenna) + Repeater gain = Indoor signal strength.
8.
For all cellular applications, you need to use 50 Ohm rated coax.
Besides affecting voice quality, using any other impedance of coax will
put an extra load on your repeater and shorten its life span.
Test for Call Quality
Trouble Shooting
3
3.1 Installation Procedure
– Co
ont.

Check the conte
ents supplied.

Identify a suitab
ble location where yo
ou would like to mount the donor
antenna on your roof or at an eleva
ated location, free off any other
antennas or imm
mediate obstructions
s. Confirm this location has the best
input signal from
m the cell tower or to
owers you would lik
ke to support.

Ensure the location is properly isola
ated from the indoor antenna
and at the same
e time, ensure the cable
length supplied
d is sufficient to
complete your in
nstallation.

Install the donorr antenna and route
e the coax to the pro
oposed location for
the indoor base unit. DO NOT COIL UP any excess coax
you may have,
including any se
ervice loops.

Connect the ind
door service antenna
as, coax and powerr supply. Power up
the unit and monitor the LED status
s for errors.

If the donor ante
enna used is not an
n omni-directional an
ntenna or the
nearest cell tow
wer location is not kn
nown at the time of system
commissioning, then you may need
d to rotate the donor antenna until the
best signal stren
ngth or call quality is
s achieved on your mobile device,
while making su
ure the LEDs stay green on the repeate
er.
3.2 An
ntenna Installattion and Coax Cable
Wiring
We do not
n recommend insttalling the donor antenna of your repea
ater system
in the attic or at the side off a single story build
ding. Doing so will re
educe the
o the input signal frrom the cell tower. Also
you increase th
he risk of
quality of
signal oscillation
taking pla
ace, thus having to attenuate
the outputt power of
your rep
peater.
 D
Do not install the do
onor antenna near high
voltage power lines.
 Please
take the nec
cessary safety meas
sures when working
g on heights.
 Do
D not mount near or
o in the path of other antennas or sate
ellite dishes.
We suggest getting someone
to help ro
otate the donor antenna while you
monitor both your mobile device (Phone
e or PC Card) and th
he LEDs on the
re
epeater at the same
e time.


If signal oscillatiion is between 1~4d
dB then the Alarm LED
for the
relevant band will
w turn amber. Please adjust the DL repeater gain till the
LEDs turn green
n. (See attenuation adjustment)
If the signal osc
cillation is between 10-15dB then the Alarm
LED for the
relevant band will
w turn red, and the
e repeater will then shut down. This is
as a result of not having enoug
gh isolation betwee
en the donor and
service antenna
as. In this case atttenuate the DL gain on the repeater
and then match
h the UL gain to the same gain value. (See attenuation
settings for adju
ustments)
It is
s recommended tha
at you mount your donor antenna in a spot
that is
free
e of any immediate obstructions. Makin
ng use of a pole or mounting
bra
acket is recommend
ded for optimum anttenna performance.
10
3 Manual Gain
3.3
n Adjustment ~ UL / DL
3.3 Ma
anual Gain Adju
ustment ~ UL / DL – Con’t.
In
n order to meet an
nd maintain safe en
nvironmental condittions for seamless
network integration, this repeater is equipped
with an LCD
interface that
allows you to manua
ally control the Uplin
nk / Downlink gain in
ndividually. The UL
/ DL attenuator contrrol range is from 0dB to -31dB by 1dB increments.
Click the ENTER button ag
gain after you have selected the desired
d band you
would liike to attenuate. This will then bring your prompt to the currrent
attenua
ation value. (Default is 0dB) You can th
hen use either the UP
U or
DOWN navigation buttons to add the desired amount of attenuatiion.
When your repeaterr is switched on, the
e LCD screen will display
the current
UL and DL gain values and output powe
er setting in a scrolling sequence.
Up Navigation Button
Active Power Sta
atus Scrolling
Up Navigation Button
Return Button
Down Navigation Button
The default of UL//DL gain
attenuator is at 0dB. (Full Power)
T following examp
The
ple shows a value of
o 2dB has been sele
ected.
Dow
wn Navigation Button
Enter / Select Button
Click the ENTER button to access the menu to add or rem
move attenuation.
Plea
ase note: For the se
elected value to take
e effect, you must press
the
ENTE
ER button after, or itt will not register. Yo
ou will then get a co
onfirmation
response when the change was
w successful.
Do
own Navigation Button
Click the UP or DO
OWN navigation buttton to access the desired
band you
would like to attenuate. (U
UPLINK or DOWNLINK)
11
12
3
3.3 Manual Gain
n Adjustment ~ UL / DL – Con’’t.
3.3 Ma
anual Gain Adju
ustment ~ UL / DL – Con’t.
After the change ha
as been made, monitor the DL alarm LED to see if it’s
green or if further atttenuation is needed
d. If the DL LED rem
mains a solid green,
th
hen be sure to matc
ch the UL gain to the
e same dB value.
In
n some deploymentts, the end user may decide to have a stronger UL gain if
th
he location of the re
epeater is very far from
the cell tower. In this instance, it
would be best not to
o exceed a 5dB diffference on the DL gain as this could
affect the optimum
m performance of the repeater’s ba
andwidth capacity.
Avoid putting more than a 5dB diffe
erence between the Up
plink and Downlink.
Re
epeater not receiving a go
ood input signal.
Main Menu
When do you adjust th
he Repeater Gain
n?
When in the main menu,
if you continu
ue to scroll down the LCD will display
options 3 & 4. When
n selected, option 3 will allow you rese
et the dB values to
fa
actory default. (No Attenuation
= Full Power).
Option 4 simply allow
ws you to exit the main
menu back to th
he home screen.
peater is equipped with
w an alarm featurre that monitors the
e input gain.
This rep
If the input gain is too high, the Alarm LED will change color from green to
either, amber
or red indicatting the intensity or the error. High inpu
ut gain can
occur iff the donor antenna is in a location whe
ere the receive signa
al strength
(RSSI) from the cell tower is extremely good (-50dB or better) or if signal
oscillation is taking place. Signal
Oscillation is
s when the amplified
d signal
from the
e indoor service anttenna is being receiived back into the donor
antenna
a outside.
ermine what is the ca
ause of your Alarm LED changing color you can
To dete
disconn
nect the indoor ante
enna / service line from the “INDOOR” port
p of the
repeate
er. If the LED does not
n change to green
n, then your input sig
gnal from
the cell tower is very strong
g and it is highly rec
commended you atttenuate the
n by 1dB increments
s till the LEDs turns green again. Then you must
DL gain
match the
t same attenuatio
on value to the UL, after
which you can connect the
indoor antenna
/ service lin
ne again.
Do
own Navigation Button
Output Power
the ind
door antenna or serrvice line, the LED changes
If after reconnecting
back to amber or red then signal oscillation is taking place. This is
s the result
or antennas being too close to each oth
her and
of your indoor and outdoo
should therefore have more separation.
Another neat featurre about the LCD Interface on this repeater
is that in
addition to the currrent UL and DL ga
ain values that scrrolls on the home
screen, it also displa
ays the active outpu
ut power level of the
e unit. This can be
used as an indicattor to determine how strong an inpu
ut signal is being
re
eceived by the repe
eater. For example if the input signal is
s weak, the output
power will display “O
Output Power = Low
w”.
When complete,
try makin
ng some test calls throughout the des
sired area of
coverag
ge while monitoring
g the LEDs to see if it changes colorr. If you are
showing
g strong signal stre
ength but your calls are not going throu
ugh, it could
be that you need to atten
nuate your uplink gain
a bit more. Ke
eep in mind
howeve
er that you do not want
to have more than a 5dB differen
nce between
the uplink and downlink values for optimum sy
ystem performance..
Iff your donor antenn
na is in the best loca
ation for receiving a good input signal
and the Output Pow
wer is still Low, the
en it could be that you either have a
ccompromised conne
ector on your input coax
cable, or that you need to add a
pre-amp to the syste
em to boost the wea
ak input signal.
courage you to call us
u when commissio
oning your repeater system to
We enc
make sure you have seamless integration to the cellular network.. We are
always happy to help. 1-86
66-4-JDTECK (53-8
8325).
Click the
t ENTER button to access any selection.
13
14
3
3.4 Testing
3.5 Troubleshooting
Q1. Wh
hy is there still no signal
after installing the equipmentt?
Answer:
ck the power on rep
peater and power su
upply.
1. Chec
2. Chec
ck the connector of outdoor antenna is tight or not.
3. Chec
ck the connectors off RF cable are tight or not.
4. Chec
ck the outdoor signa
al is strong enough or not.
5. Chec
ck to make sure the antenna is installed
d correctly.
6. Chec
ck the connector of indoor antenna is tight or not.
7. Chec
ck the cable type is suitable or not.
Q2. Wh
hy the signal strength is too weak on
n the edge of area?
Answer:
ck the outdoor signa
al and antenna direc
ction.
1. Chec
2. Chec
ck repeater is full ga
ain or not.
3. Chec
ck all of the connecttors are tight.
4. Chan
nge the location of outdoor/indoor
anten
nna.
5. Chec
ck the cable type is suitable or not.
6. Deplo
oy more indoor ante
ennas.
Q3. Wh
hy can’t I make a call after installation, even though I can
dettect a signal?
Answer:
ck LED status of rep
peater to make sure
e alarms are green.
1. Chec
2. Chan
nge the location of outdoor
/ indoor ante
enna.
3. Redu
uce the UL gain of th
he repeater.
Q4. The
e signal is not stab
ble after turning on
n the repeater pow
wer.
Answer:
ck to see if the outdo
oor signal is stable or not.
1. Chec
2. Chec
ck the location of the
e donor antenna. To
oo close to other an
ntennas.
3. Chec
ck the RF cable is broken or not and ha
as no coils.
4. Conffirm direction of donor antenna in relatio
on to cell tower.
hy is the LED on th
he front of the repe
eater not lit?
Q5. Wh
Answer:
1. Chec
ck the power source
e is normal or not.
2. MUT
TE feature is active. Attenuate gain of re
epeater and cycle power.
15
16
FCC Statement
Mechanical Specifications
Input / Output Port
Impedance
Dimensions (W x D x H)
Weight
Operating Temperature
Environment Conditions
Switching Adapter
N-Female
50 Ω
250 x 330 x 53mm
≤4.9Kg (10.8 Lbs)
-10°C ~ 50°C
IP40
Input AC 100~240V, Output DC 12V / 6A
Frequency Specifications
Model
FCC ID
Filter Bandwidth
GSM
EDGE
CDMA
WCDMA
Output power
Max. Gain
Gain Flatness
AGC Range
Maximum Input Power
Gain Control Range(MGC)
V.S.W.R
9KHz~1GHz
Spurious
Emission
1GHz~12.75GHz
Rho
CDMA System
ACPR
Modulation Accuracy
Spurious Emission Mask
Input Inter-modulation
Peak Code Domain Error
Frequency Stability
JD60-9-19-LC
SQX-JD60-9-19-LC
GSM & EDGE& CDMA& WCDMA | PCS 60MHz
Uplink
Downlink
20±1 dBm
30±1 dBm
20±1 dBm
30±1 dBm
20±1 dBm
30±1 dBm
20±1 dBm
30±1 dBm
80dB
85dB
CDMA & GSM: ≤8dB, PCS: ≤10dB
≧15dB ，auto shut off after 15dB
0dBm
≥31dB in step of 1dB by LCD menu
≤2
≤-36dBm
≤-36dBm
≤-36dBm
≤-30dBm
≤-30dBm
≤-30dBm
p >0.980
Meets IS95 & CDMA2000
≥12.5%
ACRR
Noise Figure (@ max gain)
Group Delay
Meet 3GPP TS 25.143 (V 6.2.0)
≥-35dB @ Spreading Factor 256
≤0.01ppm
≥30dBc / 30KHz ＠±5MHz
≥50dBc / 30KHz ＠±10MHz
≤6dB
≤4.5 micro Sec
Changes or modifications not expressly approved by the party responsible
for compliance could void the user's authority to operate the equipment.
PLEASE NOTE: It is normal for your repeater to be quite warm while in use.
FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment . This equipment should be installed and operated
with minimum distance 20cm between the radiator& your body.
This transmitter must not be co-located or operating in conjunction with any
other antenna or transmitter.
Record your repeater settings here.
Downlink
Dip Switch
Value
Uplink
Dip Switch
Value
1dB
1dB
2dB
2dB
4dB
4dB
8dB
8dB
16dB
16dB
Total dB Attenuated
ON
…………...
Total dB Attenuated
Adjusted By: ___________________________________
Model Specifications
Classification
Frequency Range
PCS
17
Bandwidth Range
DL -1930-1990 (MHz)
UL -1850-1910 (MHz)
Date:
ON
…………...
……./……/…………
18
NOTES
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