Cellular Specialties, Inc.
Model 310
Model 310
Model 310Model 310
Installation and Users Manual
Plus
In-Building Amplifier
In-Building Amplifier
In-Building Amplifier In-Building Amplifier
The serial number may be found on the label on the rear panel of the unit. For your
convenience, note this number below, and retain this manual, along with proof of purchase , to
serve as a permanent record of your purchase in the event of a theft, or for future reference.
MODEL NUMBER
SERIAL NUMBER
310
DATE OF PURCHASE
NAME OF COMPANY
FCC ID NVRCSI310-03
This device complies with part 90 and part 2 of the FCC
Rules. Operation is subject to the following conditions: (1)
This device m ay not cause harmful interference, and this
device must accept any interference that may cause
undesired operation.
All information and statements contained herein are accurate to the best of the knowledge of Cellular Specialties, but Cellular Specialties makes no warranty
with respect thereto, including without limitation any results which may be obtained from the products described herein or the infringement by such products of
any proprietary rights of any persons. Use or application of such information or statements is at the user's sole risk, without any liability on the part of Cellular
Specialties, Inc. Nothing herein shall be construed as license or of recommendation for use, which infringes upon any proprietary rights of any person.
Product material and specifications are subject to change without notice. All sales of the product or products described herein are subject to Cellular
Specialties' standard terms of sale and the specific terms of any particular sale.
DISCLAIMER
2
TABLE OF CONTENTS
1.0 SAFETY GUIDELINES
2.0 PRODUCT DESCRIPTION
MECHANICAL OUTLINE DRAWING 5
3.0 GENERAL SPECIFICATIONS
4.0 INSTALLATION
5.0 AMPLIFIER ADJUSTMENT
6.0 TROUBLESHOOTING
3
4
6
7
9
10
MANUAL110+ REV A
1.0
SAFETY GUIDELINES
The general safety information in this guideline applies to both operating
and service personnel. S pecific warnings a nd cautions will b e found in
other parts of this manual where th ey apply, but m ay not appear in this
summary. Failure to comply with these precautions or specific warnings
elsewhere in the manual violates safety standards of design,
manufacture, and intended use of equipm ent. Cellular Special ties, Inc.
assumes no liability for the customer's failure to comply with these
requirements.
GROUNDING
This amplifier system is designed to operate from single-phase 120VAC power and should
always be operated with both the neutral and ground wires properly connected. Do not
remove or otherwise alter the grounding lug on the power cord.
EXPLOSIVE AT M OSPHER ES
This product has an integral circuit breaker, which may cause an electrical flash if the
breaker should reset. To avoid explosion or fire, do not operate this product in the presence of
flammable gases or fumes.
LIGHTNING DANGER
Do not install or make adjustments to this unit during an electrical storm.
NO USER SERVICEA BLE PA RTS INSID E
HAZARDOUS VOLTAGES ARE PRESENT WHEN THE COVER IS REMOVED.
Opening the chassis will void your warranty. If you suspect a malfunction with this product, call
your dealer or the Cellular Specialties Support Line at (603) 626-6677.
MANUAL110+ REV A
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4
2.0
PRODUCT DESCRIPTION
Cellular Specialties, I nc. developed the Model 310
structures where suff ic ient signal f r om local cell sites to operate cel l ph ones was unavailable with in the
building. It is, of course, necessary that sufficient signa l be available on the roof of the structure. The
IBA is connected to an external a ntenna, usually on the roof, and to one or more internal antennas
placed strategically throughout the area where phone service is desired.
The external antenna is usually a directional type such as a "yagi" however an omni-directional antenna
may be used when the building is located in close proximity to one or more cell sites. Internal antennas
are usually omni-directional although various other types may be used for certain installations. The IBA
amplifies both the "uplink " (phone to tower) and "downlink" (tower to phone) signals thus facilitating
communications to and from the local cell site
There are four amplification stages on the do wnlink and f our on the up link
gain for each link. (see Figure 2.1) Both links have manual gain control settings accessed through DIP
switches on the back panel plus an AGC control for both the uplink and do wnlink. There are LED
indicators on the front panel for power on, transmitter on, uplink overload and downlink overload.
An automatic amplif ier s af et y shutdown cir cuit is a ls o pres ent wh ich will disable the trans mitters for ten
seconds should the uplink and downlink overloads be reached s imultaneously to prevent exc essive
intermodulation and oscillation.
In-Building Amplif ier (IBA) for use in enclosed
Plus
for a total of +57dB nom inal
MANUAL110+ REV A
FIGURE 2.1 Functional Block Diagram
5
11.875
10.25
TRANSMITTER ON
INDICATOR
POWER
INDICATOR
DOWNLINK OVERLOAD
INDICATOR
UPLINK OVERLOAD
INDICATOR
MOUNTING HOLE
(6 - PLACES)
2.675
SCALE: 1/2 TO 1
ALL DIMENSIONS
ARE IN INCHES
8.50
DOWNLINK ATTENUATOR
.75
3.0
0
TYPE-N CONNECTOR
(2 - PLACES)
AND AGC SWITCHES
FCC ID
LABEL
11.50
FIGURE 2.2 Model 310 Mechanical Outline Drawing
UPLINK ATTENUATOR
AND AGC SWITCHES
I
0
POWER ON
SWITCH
POWER CORD
(6 FOOT)
MANUAL110+ REV A
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3.0
All specifications stated a s typical unless ot herwise noted. Cellular Specialties, I nc. rese rves the rig ht to change these spe cifica tions at any time without no tice.
Frequency
Pass Band Ripple
Gain @ Zero Attenuation
Gain Adjustment Range
Power Output, (max).
1dB Compression
Linear
Noise Figure, Typ.
3rd Order Intercept Point, IP3
Maximum Input Power
VSWR
Propagation Delay
Impedance
Connectors
Power Requirements
Size
Weight
Operating Temperature
Indicator LEDs
Controls
GENERAL SPECIFICA TIONS
Uplink (Phone to Tower) Downlink (Tower to Phone)
806-821MHz 851-866MHz
1.5dB
±
+57dB+3dB
0-28dB 0-28dB
+27 dBm +27 dBm
+25 dBm +25 dBm
+6dB +6dB
+43dBm +43dBm
-10dBm -10dBm
2.0:1 Max
<1.0 microsecond
50 Ohms
‘N’ Female
120 VAC @ 500mA
12” x 10” x 3”
6¾ Lbs., 3 kg
-22 to +118°F, -30 to +48°C
Power, Transmitter On, Uplink Overload, Downlink Overload
Power switch with circuit breaker, AGC override switch, switches for
Uplink and Downlink attenuation from 0-28dB in four dB steps.
1.5dB
±
+57dB+3dB
MANUAL110+ REV A
4.0
Pre-installation Survey
INST ALLA TION
Note:
The Installer should refe r to the Safe ty Precaut ions, in the
following section, for proper antenna selection and installatio n
A pre-installation survey should be performed prior to commitment to installation. Measurement of
Received Signal Strength Indication (RSSI) should be recorded throughout the building in all areas
where cell phone cover age is desir ed. R SSI le vels ar ou nd th e ex terior of the b uil din g as wel l as on the
rooftop or as close to the point where the exterior antenna will be installed should also be recorded.
RSSI readings at the position where the outside antenna wil l be installed should be greater than –90
dBm. (E.g. –85dBm) Successful installations may be made with lower readings in some cases.
WARNING!
AMPLIFIER DAMAGE WILL OCCUR IF A HANDSET IS
CONNECTED DIRECTLY TO THE IBA OR THE COAX THAT
!!!!
The exact locatio n o f the pr opos ed o utsid e ant enna sho uld be mea sur ed w ith a GPS
unit and the coordi nates of t he cel l sit es closest to the bui ldi ng in w hich th e sy stem is
being installed s ho uld be obtai ned . With these coor din ates t he di stanc e and bear ing
to each of the l ocal cell sit es c an be comp ut ed an d ma de av ail abl e to t he i nstall atio n
team. The first choice should be the clos est site unless th ere is blockag e in the form
of buildings or terrain between the building and this cell site. If blockage exists an
alternate site may be av ailabl e.
If GPS coordina tes are n o t avai labl e ther e is an a lt ernati v e method of l ocating t he
dominant site: co nnect a ha ndset v i a SMA femal e to N mal e ad apter t o the
directional donor an tenna . R otate th e ant enna unti l max i mum RS SI and S QE
readings are ob tained and s ecur e it.
The location of th e I BA an d the int erior a nt ennas s houl d be deter min ed thr oug h the
use of floor plans of the buil ding i n w hich th e syste m is to be i nstall ed. I t is i mporta nt
to locate the IBA at a centr al loca tion a nd tr y to ke ep th e coax runs from the a mplifi er
to the antennas as sh ort as possi ble. A maxi mum leng th o f 150 feet is sug gest ed
although longer r uns mig ht be accom modate d. Thi s assu mes that a c oax w ith l oss at
LEADS TO THE IBA.
MANUAL110+ REV A
7
800 MHz of approx im ately 3.5 dB per 10 0 feet is used . The c oax us ed sho uld be a
nominal RG-8 ty pe w ith a flame retar dant r ating exce pt w hen i nstall ed in space
where moving ai r (hea ting and/ or co oling ) ex ists. I n w hich c ase th e coax must be
“plenum” rated. For l ong ru ns t hat ex ceed 1 50 feet, t he use o f low loss ½” coax is
desirable. Of pri mar y conc ern i s th e isol ati on betw een t he ou tsid e ant enna and t he
inside antennas.
Important note: A high degree of isolation must be afforded in order to prev ent
any re-generative f eedbac k in th e sy st em. Feedbac k of thi s natur e caus es t he
amplifier to emit a continuous sign al of maximum amplitud e and could , in
some cases, interfer e with normal op eration of th e cel l site. This isolation
should be in the order of 70 dB and is usually obtained by mounting the
outside antenna away from the edges of th e roof. The u se of window mounts
or other non-rooftop mountings should be avoided.
SAFETY PRECAUTIONS
!!!!
For INDOOR use, an Omni-Directional Antenna with a maximum g ain of 3dBi is
authorized for use with this un it.
Inside antennas must be positioned to observe minimum separation of 20 cm.
(~ 8 in.) from all users and bystanders. For the protection of personnel working
in the vicinity of inside (downlink) antennas, the following guidelines for
minimum distances between the human body and the antenna must be
observed.
The installation of an INDOOR antenna must be such that, under normal
conditions, all personnel cannot come within 20 cm. (~ 8.0 in.) from any
inside antenna. Exceeding this minimum separation will ensure that the
employee or bystander does not receive RF-exposure beyond the
Maximum Permissible Exposure according to section 1.1310 i.e. limits for
General Population/Uncontrolled Exposure.
MANUAL110+ REV A
8
!!!!
For OUTDOOR use, a Directional Antenna up to a maximum gain of 11dBd is
authorized for use with this un it.
The Outside antenna must be positioned to observe minimum separation of
120 cm. (~ 4 ft.) from all users and bystanders. For the protection of personnel
working in the vicinity of outside (uplink) antennas, th e following guideline s for
minimum distances between the human body and the antenna must be
observed.
The installation of an OUTDOOR antenna must be such that, under normal
conditions, all personnel cannot come within 120 cm. (~ 4 ft.) from the
outside antenna. In all installations, the antenna should never be mounted
such that the main beam is directed toward an area where workers or
bystanders may be present. Exceeding this minimum separation will
ensure that the w orker or bystander does not receive RF-exposure beyond
the Maximum Permissible Exposure according to section 1.1310 i.e. limits
for General Population/Uncontrolled Exposure.
Physical Installation
The coaxial cable discussed above should be pulled from the rooftop location to the
space designated for the amplifier installation. Additional coax should be pulled from
the amplifier to where power splitters are located and thus to the position designated
for the Omni-directional antennas. Usually this is accomplished by using existing
cableways and running the cable above suspended ceilings. In many cases the
Omni-directional antennas can be located above the suspended ceilings however,
when this is not possible, alternatives such as ceiling or wall mounted antennas may
be used.
When mounting the amplifier, take care to avoid areas of high heat or extreme cold.
In general, do not place the un it on or near the top of high ceilings, b y heaters or in
cold storage are as.
MANUAL110+ REV A
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5.0
In most cases the IBA will need very little adjustment. After connecting the coax and
powering up the IBA, the signal l evels within the p reviously survey ed ar ea s should be
checked for adequate RSSI and Signal Quality Equivalent (SQE) levels.
Measurements should be made at the perimeter of the building both inside and
outside. It is important that the RSSI levels measured outside the building remain
close to those measured prior to i nstallatio n of the IBA.
Both the uplink and downlink overload indicators should remain off. If either indicator
is illuminated, the gain of the appropriate link should be reduced.
If the gain of the amplifier needs adjustment the uplink and the downlink may be
adjusted by means of the step attenuators on the rear of the unit. Attenuation from 0
dB to 28 dB in steps of 4 dB may be inserted by proper selection of the 4, 8 and 16
dB attenuators. If satisfactory cell (or two-way) phone performance is not obtained
when the phone is in close proximity to the interior antenna it may be necessary to
decrease the gain of one or both of the links.
AMPLIFER ADJUSTMENT
MANUAL110+ REV A
10
6.0
TROUBLESHOOTING
All external cabl es sho uld be care fully check ed for “shor ts” an d “op ens”.
The rooftop antenna, if directional, should be checked for proper alignment along the
calculated compass heading. Typically, the directional antenna should be aimed at
the same sight that your handset uses in the area where the outside antenna is to be
placed.
If cables and alignment are O.K. it may be necessary to use a spectrum analyzer to
examine the signal environment in which the IBA is operating. The existence of
strong analog signals within the frequency bands can cause problems particularly on
the downlink. In some cases additional filtering might be required to reject these
unwanted signals. Automatic Gain Control (AGC) may be switched on by moving the
leftmost dip switch to the on (down) position. In some instances the directional
outside antenna can be reoriented, horizontally to place the interfering source in an
antenna pattern “null”. There also may be some cases where the interference from
outside signals is so great that they can not be filtered or otherwise reduced or
eliminated without expensive and possibly prohibitive measures. In these cases it
may not be practic al t o use th e IBA for prov iding cover age a t thes e sit es.
MANUAL110+ REV A
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