Westell CSI510 04 Users Manual

Cellular Specialties, Inc.

Model 510SMR 900In-Building Amplifier

Installation and Users Manual

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

510

DATE OF PURCHASE

NAME OF COMPANY

FCC ID NVRCSI510-04

This device complies with Parts 90 and 2 of
the FCC Rules.

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

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TABLE OF CONTENTS

1.0 SAFETY GUIDELINES 3

2.0 PRODUCT DESCRIPTION 4

MECHANICAL OUTLINE DRAWING 5

3.0 GENERAL SPECIFICATIONS 6

4.0 INSTALLATION 7

5.0 AMPLIFIER ADJUSTMENT 9

6.0 TROUBLESHOOTING 10

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1.0

SAFETY GUIDELINES

The general safety information in this guideline applies to both operating
and service personnel. Specific warnings and cautions will be found in
other parts of this manual where they apply, but may not appear in this
summary. Failure to comply with these precautions or specific warnings
elsewhere in the manual violates safety standards of design,

!

 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.

manufacture, and intended use of equipment. Cellular Specialties, Inc.
assumes no liability for the customer's failure to comply with these
requirements.

 EXPLOSIVE ATMOSPHERES

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 SERVICEABLE PARTS INSIDE

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 [phone].

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2.0

Cellular Specialties, Inc. developed the Model 510
enclosed structures where sufficient signal from local cell sites to operate cell phones was unavailable
within the building. It is necessary that sufficient signal be available on the roof of the structure. The
BDA is connected to an external antenna, 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 BDA 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 downlink and four on the uplink
gain for each link. Both links have manual gain control settings accessed through DIP switches on the
top of the unit plus an AGC control for both the uplink and downlink. There are LED indicators for
power on, transmitter on, uplink overload and downlink overload.

PRODUCT DESCRIPTION

Bi-Directional Amplifier (BDA) for use in

smr900

for a total of 60 dB nominal

An automatic amplifier safety shutdown circuit is also present which will disable the transmitters for ten
seconds should the uplink or downlink overloads be reached to prevent excessive intermodulation and
oscillation.

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(Serial No.)

2 AMP

+5VDC

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GND

(FCC Label)

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3.0

All specifications stated as typical unless otherwise noted.

Uplink (Phone to Tower) Downlink (Tower to Phone)

Frequency
Pass Band Ripple
Gain @ Zero Attenuation
Gain Adjustment Range
Linear Output Power (typical)*
Noise Figure (max)
Maximum Input Power**
VSWR
Propagation Delay
Impedance
Connectors
Power Requirements
Size
Weight
Operating Temperature
Indicator LEDs

Controls

NOTES
* Maximum total output power without exceeding the FCC allowable emissions of –13 dBm.
** Maximum safe input power at maximum gain with no damage.

GENERAL SPECIFICATIONS

896 – 901 MHz 935 – 940 MHz

± 2 dB ± 2 dB

60 dB 60 dB

-28dB -28dB

+27 dBm +27 dBm

5.5dB 5.5dB

+10 dBm +10 dBm

Power, Transmitter On, Uplink Overload, Downlink Overload

Power switch with fuse, AGC switch, Uplink and Downlink

attenuation switches 0 - 28dB in 4 dB steps.

2.0:1 Max

<250 nsec.

50 Ohms

‘N’ Female

120 VAC @ 500mA

14” x 11.5” x 4.5”

8.8 Lbs., 4 kg

-22 to +118°F, -30 to +48°C

Cellular Specialties, Inc. reserves the right to change these specifications at any time without notice.

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4.0

INSTALLATION

CSI recommends that all BDA installations be coordinated through
the local wireless provider.

Note:

The Installer should refer to the Safety Precautions, in the

following section, for proper antenna selection and installation

Important note:
generative feedback in the system. Feedback of this nature causes the
amplifier to emit a continuous signal of maximum amplitude and could, in
some cases, interfere with normal operation of the cell site. The minimum
required isolation of 70 dB can usually be obtained by mounting the outside
antenna away from the edges of the roof. The use of window mounts or other
non-rooftop mountings should be avoided.

AMPLIFIER DAMAGE WILL OCCUR IF A HANDSET IS

CONNECTED DIRECTLY TO THE BDA OR THE COAX THAT

A high degree of isolation must be afforded to prevent any re-

WARNING!

LEADS TO THE BDA.

!

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SAFETY PRECAUTIONS

!

For INDOOR use, an Omni-Directional Antenna with a maximum gain of 3dBi is
authorized for use with this unit.
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 Limits for
General Population/Uncontrolled Exposure.

!

For OUTDOOR use, a Directional Antenna up to a maximum gain of 3 dBi is
authorized for use with this unit.
The Outside antenna must be positioned to observe minimum separation of 20
cm. (~ 8 inches) from all users and bystanders. For the protection of personnel
working in the vicinity of outside (uplink) antennas, the following guidelines 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 20 cm. (~ 8 inches) from the
outside antenna. Exceeding this minimum separation will ensure that the
worker or bystander does not receive RF-exposure beyond the Maximum
Permissible Exposure according to section 1.1310 Limits for General
Population / Uncontrolled Exposure.

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Example: Standard Single Internal Antenna System Design

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5.0

In most cases the BDA will need very little adjustment. After connecting the coax and
powering up the BDA, the signal levels within the previously surveyed areas should
be checked for adequate RSSI 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 installation of
the BDA.

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 top 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

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6.0

All cables should be carefully checked for “shorts” and “opens”.

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 site that your handset uses in the area where the outside antenna is
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 BDA 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. 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 practical
to use the BDA for providing coverage at these sites.

TROUBLESHOOTING

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