Westell CSI DSP85 CP Users Manual
CSI-DSP85-CP
Installation Manual
Table Of Contents
Product Registration Information........................................1
Document Purpose/Intended Users...................................1
Application..........................................................................1
Safety Guidelines...............................................................1
Manual used Terms............................................................2
Product Introduction...........................................................2
DSP Filter Naming Convention.............................3-4
Functional Overview..............................................5
LED Indicators.......................................................5-6
Local Communications Interface Ports.....................7
Pin-out Chart........................................................7
USB Interface........................................................8
Ethernet.................................................................8
Monitoring & Alarms..............................................8
Troubleshooting.....................................................8
Mounting the CSI-DSP85-C/P..............................9
Optional Accessories..........................................................10
Important Installation Notes................................................10
Important Safety Information.............................................. 11
Circuit Description.............................................................. 11
Function Block Diagram.........................................12
Mechanical Specifications......................................13
AC Power Specifications........................................13
Operating Power Parameters................................14
Environmental Requirements.................................14
Mechanical Drawing............................................................15
Web Based GUI Session....................................................16-21
Command Line Interface (Local Access,)...........................22-27
Telnet Session (Remote Access, Login Required).............27-31
Modem Interface (Remote Access with Login)..................31
Product Warranty................................................................32
FCC Information.................................................................32
Product Registration Information
The serial number may be found on the label on the rear panel of the unit. Note this
number below. Retain this manual, along with proof of purchase, to serve as a
permanent record of your purchase.
MODEL NUMBER SERIAL NUMBER DATE OF PURCHASE
POINT OF SALE COMPANY
DISCLAIMER: All information and statements contained herein are accurate to the best of the knowledge of Cellular Specialties,
Inc. (CSI), but Cellular Specialties makes no warranty with respect there to, including without limitation any results that may be
obtained from the products described herein or the infringment by such products of any proprietary rights of any persons. Use or
application of such information or statements is at the users sole risk, without any liability on the part of Cellular Specialties, Inc.
Nothing herein shall be construed as licence or recommendation for use, which infringes upon any proprietary rights of any person.
Product material and specifications are subject to change without notice. Cellular Specialties’ standard terms of sale and the
specific terms of any particular sale apply.
Document Purpose / Intended Users
The purpose of this document is to provide a step-by-step procedure to help the experienced
technician/engineer install and commission an in-building wireless enhancement repeater
system using CSI’s “Wireless Engine” Digital Repeater. Following the procedures outlined will
minimize risks associated with modifying a live system and preclude service interruptions. This
document assumes the technician/engineer understands the basic principles and functionality
involved with Repeater and in-building systems. It is geared to the practical concerns of the
installer.
Application
This guide should be applied whenever a need exists to add Digital Repeater capability to an
existing system or when this capability is being included with a new installation.
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, manufacture, and intended use of
equipment. Cellular Specialties, Inc. assumes no liability for the customer’s failure to comply with
these requirements:
Grounding
This Digital Repeater system is designed to operate from 100-240 VAC and should always
be operated with the ground wire properly connected. Do not remove or otherwise alter the
grounding lug on the power cord.
Explosive Atmospheres
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. Use of a suitable
lightning arrester, such as CSI’s model number CSI-CAP, is very strongly recommended.
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: (603) 626-6677, Toll Free (USA) 1-877-844-4274.
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Terms used in this manual
AGC = Automatic Gain Control ERP = Effective Radiated Power
APC = Automatic Power Control FPGA = Field Programmable Gate Array
AUI = Attachment Unit Interface LED = Light Emitting Diode
CLI = Command line Interface RF = Radio Frequency
CPU = Central Processing Unit SBC = Single board Computer
CSI = Cellular Specialties, Inc. USB = Universal Serial Bus
DSP = Digital Signal Processing UHCI = Universal Host Controller Interface
EEPROM = Electrically Erasable
Programmable read only Memory
Product Introduction
Cellular Specialties, Inc. (CSI) developed the Wireless Engine digital repeater for use within enclosed
structures where sufficient signal from local cell sites to operate cell phones is unavailable. Adequate
signal must be available outside the structure as a prerequisite to achieving in-building coverage. The
Digital Repeater is connected to an external antenna, usually on the roof, and to one or more internal
antennas placed strategically throughout the area where wireless service is desired.
The external antenna typically is directional, such as a “yagi”. Internal antennas are typically omnidirectional, although various other types may be used depending on the coverage application. The CSI’s DSP
Repeater amplifies both the “uplink”(phone to tower) & “downlink”(tower to phone) signals thus facilitating
communications to and from the intended wireless infrastructure.
With a maximum total of +85dB nominal gain on both the up and down links, gain can be adjusted over a
range from +55dB to +85dB in 0.5dB steps. Control of the repeater is achieved utilizing a computer
connected to comm. port 1 or 2 or via Ethernet cable connected to the Ethernet port. There are also LED
indicators near the display to indicate ALARM status, AGC status, UL PWR, DL PWR, OSC, SHUT DWN
and a D/L SIGNAL STRENGTH bargraph.
A specific filtering process modifies each amplification chain. This process digitally converts the assigned
spectrum and then applies digital signal processing (DSP) techniques. DSP is used to create passbands
that selects the RF energy passing through either the uplink or downlink paths. After the digital processing
is complete, the information is converted back to an analog signal that is applied to the remaining stages
of amplification. The resulting signals emitted by the repeater are specific to the network service providers’
requirements. If these requirements change, only the DSP configuration parameters need change in order
to adapt. Configuration parameters are created at the factory and supplied as files that may be downloaded to the repeater. The filter set configurations stored in memory determine the unit’s adaptability to
various field applications. The following pages describe the Cellular and PCS band plans as well as the
convention CSI uses to identify and store the files that make up the filter set.
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Cellular Frequency Band Plan
UpLink DownLink
SMR800
iDEN
A”
A B A’ B’
BUFFER
SMR800
iDEN
A”
A B A’ B’
806 821 824 825 835 845 846.5 849 851
DownLink UpLink
PS700 PS700
764 776 794
806
866 869 870 880 890 891.5 894
UpLink
SMR900 SMR900
BUFFER
896 901 935
894
DownLink
940
Note: All frequencies are shown in MHz
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PCS Frequency Band Plan
UpLink
DAB
1850 1865 1870 1885 1890 1895 1910
UL 1857.5-1865
A1
DL 1937.5-1945
UL 1877.5-1885
B1
DL 1957.5-1965
UL 1902.5-1910
C1
DL 1982.5-1990
EF C
UL 1850-1857.5
A2
DL 1930-1937.5
UL 1870-1877.5
B2
DL 1950-1957.5
UL 1895-1902..5
C2
DL 1975-1982.5
C6
BUFFE R
UL 1850-1855
A3
DL 1930-1935
UL 1870-1875
B3
DL 1950-1955
UL 1895-1900
C3
DL 1975-1980
UL 1895-1897.5
DL 1975-1977.5
1930
UL 1897.5-1900
C7
DL 1977.5-1980
DownLink
DABEFC
1945 1950 1965 1970 1975 1990
A4
B4
C4
C8
UL 1855-1860
DL 1935-1940
UL 1875-1880
DL 1955-1960
UL 1900-1905
DL 1980-1985
UL 1900-1902.5
DL 1980-1982.5
UL 1860-1865
A5
DL 1940-1945
UL 1860.9-1865
A”
DL 1940.9-1945
UL 1880-1885
B5
DL 1960-1965
UL 1905-1910
C5
DL 1985-1990
UL 1902.5-1905
C9
DL 1982.5-1980
Note: All frequencies are shown in MHz
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Functional Overview
The CSI-DSP85-C/P repeater incorporates the following features for convenient operation,
access, protection, and control.
• Network Configuration and Control using either a webpage style GUI through
any standard browser or a menu driven user interface using the serial port.
Note: GUI does not require Internet access.
• User Gain Control (affects all passbands)
• Automatic Gainl Control
• Automatic Power Control
• Oscillation Protection
• Over Drive Protection (P.A. limiting)
• Under/Over Voltage Protection
• Fault Protection
• Alarm Notification - Local/Remote
• Upgrade Support - Local/Remote
• External Interfaces - USB/Ethernet/Serial
• Re-loadable filters - Local/Remote
• Web-based monitoring and control - Local/Remote
• Persistent Status and Error information
LED Indicators
Automatic safety precautions are built into the amplifier system. In the case of a catastrophic system
event, a shutdown circuit is incorporated that will disable all emissions should the uplink input or downlink
input be overdriven or should an oscillation or output overpower event occur. The amplifier will periodically
attempt to recover from the detected condition automatically. Warning light indicators are as follows:
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Alarm: Indicated by a red LED. The unit has sensed an alarm condition. This LED may
light alone or in conjuction with one of the other indicator LEDs. In both cases the
cause(s) can be review by going to the System Health menu.
AGC: Indicated by a yellow LED. The gain of the unit has been reduced in order to
prevent very strong input signals from overloading the amplifier. The amplifier will
attempt to recover from this condition at periodic intervals.
UL PWR: Indicated by a red LED. Uplink power has been affected by a system event and
DL PWR: Indicated by a red LED. Downlink power has been affected by a system event
OSC: Indicated by a red LED. An oscillation event has occurred or is occurring. The
SHUT DWN: Indicated by a red LED. The RF stages of the unit are disabled due to an
D/L SIGNAL
STRENGTH: Indicated by a green LED bargraph. This indicates the relative signal strength
will need to been addressed by either the system software or a technician to
be reset to original system settings, using the GUI or menu driven user interface.
See the event log to determine the nature of the fault.
and will need to be addressed by either the system software or a technician to
be reset to original system settings, using the GUI or menu driven user interface.
See the event log to determine the nature of the fault.
system has been affected by the event and the problem will need to be
addressed by the system software or a technician to be reset to original system
settings. This is an indication of a major fault.
unresolved system event such as oscillation, effectively taking the unit off the
air. The problem will need to be addressed by a technician before the on air
operation can be restarted. The repeater is not equipped with an ON/OFF
power switch, for a hard power down the unit is unplugged.
being received from the cell site. Note: the last bar of the bargraph will turn
red in the event of very strong adjacent channel interference.
Approximate Signal Strengths of Bargraph Display
ILLUMINATED
BARS
10
9
8
7
6
5
4
3
2
1
0*
SIGNAL AT INPUT
CONNECTOR
Adjacent Channel
Interference
-54dBm to -51dBm
-58dBm to -55dBm
-62dBm to -59dBm
-66dBm to -63dBm
-70dBm to -67dBm
-74dBm to -71dBm
-78dBm to -75dBm
-81dBm to -79dBm
-85dBm to -82dBm
< -85 dBm
*Note: During Power up, the CSI-DSP85-CP will require
a few moments for the internal computer to boot
up. During this time the LEDs on the front panel will
light and go out several times. When boot is
complete the CSI logo will be lit. Part of the LED
bargraph may also be lit,depending on the strength
of the signal being received from the donor site.
Signals weaker than-85dBM will not illuminate any
bars.
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Local Communication Interface Ports
To allow monitoring and control, the CSI-DSP85-CP is equipped with four ports that provide
external communication access (1 Ethernet CAT-5, 2 DB-9 serial, and 1 USB). The Ethernet,
CAT-5 port is provided as a primary communications port to the PC. One serial interface
provides communications to local PC and the second to an external modem when provided. The
USB interface provides a means to download files from a memory device and may also be used
by an internal or external modem. The DB-9 pin assignments conform to the standard Electronic Industries Association (EIA232) specification. A diagram of the pin descriptions is
provided on this page for reference.
Connecting a null modem cable to one of the COM ports and using a terminal emulation
program with a PC will allow communication to the control processor’s Command Line Interface
(CLI). See command line interface section for further detail.
EIA232 Pin Specifications
The diagram above is for reference only, it’s intended to provide a quick source for pinout
information in the event it should be necessary to adapt your serial cable because of an
unusual connector configuration. In the vast majority of cases this information will not be
needed.
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USB Interface
The Universal Serial Port (USB) interface conforms to Intel’s Universal Host Controller
Interface (UHCI) version 1.1 dated March 21, 1996. This interface will support data
transfer rates up to 12 Mbps.
Ethernet
The Ethernet AUI conforms to IEEE 802.3 and is capable of supporting 10/100 Mbps
communications speeds.
Monitoring & Alarms
There are no physical connections provided to specifically communicate system status or
alarm status. This information is embedded in data accessible via the communication
ports described earlier.
Troubleshooting
All cables should be checked for shorts and opens.
The rooftop antenna (Donor Antenna), if directional, should be checked for proper
alignment along the calculated compass heading. Typically, the directional antenna would
be aimed at the same site that your handset uses, but it may not always be so. It is
critical the installer contact the service provider for information on, and
approval of the cell site he or she has selected before the system is turned
on.
If cables and alignment are acceptable and the problem persists, it may be necessary to
use a spectrum analyzer to examine the signal environment in which the CSI-DSP85-CP
is operating. The existence of strong signals within the frequency bands can cause the
AGC to reduce the amplifier’s gain. 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 interference source in an antenna pattern “null”. There
also may be some cases where the interference from outside signals is so great that they
cannot be filtered or otherwise reduced or eliminated without expensive and possibly
prohibitive measures. In these cases it may not be practical to use the CSI-DSP85-CP for
providing coverage to these sites.
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Wall Mounting the CSI-DSP85-CP, “Frequency Agile Repeater”
The following diagram illustrats the best method for mounting the repeater to a wall in a
typical installation. Note: for optimal cooling the unit should be mounted vertically on a
wall with the antenna ports up.
ITEM # QTY PART # DESCRIPTION
1 1EA CS10-370-403 DSP85-CP REPEATER
2 2EA 453-1010-001 24V POWER SUPPLY
3 2EA 780-0510-001 LINE CORD (AC POWER)
4 1EA 750-2171-001 MOUNTING PLATE (OPTIONAL)
5 2EA 750-2172-001 P/S MOUNTING BRACKET
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