CSI CSI-DSP85-250-L7 User manual

960-1041-019 rev C ECO2486
CSI-DSP85-250-L7, CSI-DSP85-250-U7C,
CSI-DSP85I-250-L7, CSI-DSP85I-250-U7C,
CSI-DSP85-251-L7, CSI-DSP85-251-U7C,
CSI-DSP85I-251-L7, and CSI-DSP85I-251-U7C

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-39-
Notes

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Notes
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Table of Contents
Product Registration Information .......................................................................................................................................4
Document Purpose / Intended Users..................................................................................................................................4
Application............................................................................................................................................................................4
Radio and Television Interference ......................................................................................................................................4
Safety Guidelines .................................................................................................................................................................4
Important Safety Information ..............................................................................................................................................5
Terms used in this manual ..................................................................................................................................................5
Product Introduction............................................................................................................................................................5
Band Plan and Filter Naming Convention..........................................................................................................................6
LTE Filter File Naming Convention .................................................................................................................................... 6
Functional Overview ............................................................................................................................................................7
LED Indicator ........................................................................................................................................................................7
Local Communication Interface Ports................................................................................................................................8
EIA232 Pin Specifications....................................................................................................................................................8
USB Interface........................................................................................................................................................................8
Ethernet.................................................................................................................................................................................8
Monitoring & Alarms ............................................................................................................................................................ 9
System Set-Up Considerations...........................................................................................................................................9
Selection of external attenuators to be used in line with the Antenna Port(s)...............................................................9
Donor Port...........................................................................................................................................................................10
Server Port ..........................................................................................................................................................................10
Attenuator Selection Guidelines.......................................................................................................................................10
Mounting the Digital Repeater........................................................................................................................................... 11
Important Installation Notes..............................................................................................................................................12
Installation Tips ..................................................................................................................................................................12
Optional Accessories.........................................................................................................................................................12
Circuit Operational Description ........................................................................................................................................13
Functional Block Diagram .................................................................................................................................................13
Mechanical Specifications................................................................................................................................................. 14
Environmental Requirements............................................................................................................................................14
AC Power Specifications ...................................................................................................................................................14
Operating Power Parameters ............................................................................................................................................15
Mechanical Drawing...........................................................................................................................................................16
System Status..................................................................................................................................................................... 17
Web based GUI Session .................................................................................................................................................... 17
Local Network.....................................................................................................................................................................18
RF Configuration ................................................................................................................................................................19
Program a Filter..................................................................................................................................................................19
Remote Network .................................................................................................................................................................20
SNMP Configuration........................................................................................................................................................... 20
System Health..................................................................................................................................................................... 21
Install & Upload ..................................................................................................................................................................21
Reboot .................................................................................................................................................................................22
E-mail Configuration ..........................................................................................................................................................22
Alarm Configuration...........................................................................................................................................................22
Log Configuration .............................................................................................................................................................. 22
Change Password ..............................................................................................................................................................23
Text Menu Interface (Local Access).................................................................................................................................. 23
Terminal Emulation Program............................................................................................................................................. 24
Terminal Emulation Set-up ................................................................................................................................................ 25
TMI Login.............................................................................................................................................................................26
Telnet Session (Remote Access) ......................................................................................................................................28
Telnet Session Login.......................................................................................................................................................... 29
Modem Interface (Remote Access with login).................................................................................................................30
Additional Tips....................................................................................................................................................................31
Suggested spectrum analyzer setting.............................................................................................................................. 33
RF Notes..............................................................................................................................................................................33
Industry Certifications/Registration Numbers.................................................................................................................34
One Year Limited Warranty................................................................................................................................................ 34
Index ....................................................................................................................................................................................35

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Product Registration Information
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
thereto, including without limitation any results that may be obtained from the products described
herein or the infringement by such products of any proprietary rights of any persons. Use or ap-
plication 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.
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: [phone], Toll Free (USA) 1-877-844-4274.
Safety Guidelines
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.
Application
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 Digital Repeater. Following the procedures outlined will minimize risks associated with
modifying a live system and prevent 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.
The serial number may be found on the label on the bottom panel near the power
connectors. Note this number below. Retain this manual, along with proof of pur-
chase, to serve as a permanent record of your purchase.
MODEL NUMBER SERIAL NUMBER PURCHASE DATE
POINT OF SALE COMPANY
Radio and Television Interference
NOTE: This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential
area is likely to cause harmful interference in which case the user will be required to correct
the interference at his own expense. In order to maintain compliance with FCC regulations
shielded cables must be used with this equipment. Operation with non-approved equip-
ment or unshieled cabled is likely to result in interference to radio & television reception.
Changes and Modifications not expressly approved by Cellular Specialties can void your
authority to operate this equipment under Federal Communications Commissions rules.
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Notes

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Notes
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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
CPU= Central Processing Unit OIP3= Third-Order Intercept Point
CSI= Cellular Specialties, Inc. RF= Radio Frequency
DAS= Distributed Antenna System SBC= Single board Computer
DHCP= Dynamic Host Configuration SNMP= Simple Network Management Protocol
Protocol TMI= Text Menu Interface
DSP= Digital Signal Processing USB = Universal Serial Bus
EEPROM= Electrically Erasable UHCI = Universal Host Controller Interface
Programmable read-
only Memory
Antennas used for the purpose of radiating signals indoors are limited to a maximum gain of 3 dBi. The outdoor antenna used for the
purpose of communicating to the wireless infrastructure is limited to 14dBi gain, or any combination of gain and loss that equates to
14dB at input. Each antenna must be positioned to observe minimum separation requirements from all users and bystanders. The fol-
lowing guidelines should be used when considering separation distances.
INDOOR antennas must be placed such that, under normal conditions, personnel cannot come within 51 cm (~20.0 in.) from any
inside antenna. Adhering to this minimum separation will ensure that the employee or bystander cannot exceed RF exposures beyond
the maximum permissible limit as defined by section 1.1310 i.e. limits for General Population/Uncontrolled Exposure.
OUTDOOR antenna must be positioned such that, under normal conditions, personnel cannot approach closer than 183 cm. (~6 ft.).
A directional antenna having a maximum gain of 14 dBi is used, precautions should be taken to prevent personnel from routinely pass-
ing through the main radiation beam at a distance closer than specified.
Product Introduction
Terms used in this manual
Important Safety Information
Cellular Specialties, Inc. (CSI) developed the DSP85-250, DSP85-251, DSP85I-250 and DSP85I-251 digital repeaters 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 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 +53.5dB to
+85dB in 0.5dB steps. Control of the repeater is achieved utilizing a computer connected to com port 1 or 2 or via a Crossover
Ethernet cable connected to the Ethernet port.
A specific filtering process modifies each amplification chain. This process digitally converts the assigned spectrum and then ap-
plies 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 band plans as well as the convention CSI uses to identify and store the files that make up the filter set. All CSI re-
peaters are shipped with an active filter set that is programmed according to the ordering parties’ specifications. In most cases,
the installer will not be required to program a filter.

LTE Filter File Naming Convention
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LTE Lower A, B & C Band Plan
Up Link
(MHz)
Down Link
(MHz) 728
698
A0
UL698-704
DL728-734
B0
UL704-710
DL734-740
A1
UL698.5-703.5
DL728.5-733.5
B1
UL704.5-709.5
DL734.5-739.5
AB
704 710
734 740
Up Link
(MHz)
Down Link
(MHz)
A2 A3 A4 A5 A6 A7
UL698-699
DL728-729
UL699-700
DL729-730
UL700-701
DL730-731
UL701-702
DL731-732
UL702-703
DL732-733
UL703-704
DL733-734
B2 B3 B4 B5 B6 B7
UL704-705
DL734-735
UL705-706
DL735-736
UL706-707
DL736-737
UL707-708
DL737-738
UL708-709
DL738-739
UL709-710
DL739-740
746
716
C
C0
UL710-716
DL740-746
C1
UL710.5-715.5
DL740.5-745.5
C7
C6
C5C4C3
C2
UL715-716
DL744-745
UL714-715
DL744-745
UL713-714
DL743-744
UL712-713
DL742-743
UL711-712
DL741-742
UL710-711
DL740-741
LTE Upper C Band Plan
Up Link
(MHz)
Down Link
(MHz) 746
776
C0
UL776-787
DL746-757
C1
UL776.5-786.5
DL746.5-756.5
C
787
757
Up Link
(MHz)
Down Link
(MHz)
781.5
751.5
Note: All Variant/Guard Band designators other than 0 are user defined
custom filters.
Band Plan and Filter Naming Convention
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Index
A
AC Current 14
AC Power Frequency 14
AC Power Specications 14
AC Voltage 14
Additional Tips 31
AGC 5
Alarm Conguration 22
APC 5
Application 4
AUI 5
Automatic Gain Control 15
B
Box Weight 14
C
CDMA RHO 15
Change Password 23
Circuit Operational Description 13
Connectors 15
CPU 5
CSI 5
D
DAS 5
Depth 14
DHCP 5
Document Purpose / Intended Users
4
DSP 5
E
EEPROM 5
Email Conguration: 22
Environmental Requirements 14
ERP 5
Event Log 21
Explosive Atmospheres 4
F
FPGA 5
Functional Block Diagram 13
Functional Overview 7
G
Grounding 4
H
Height 14
I
Important Installation Notes 12
Important Safety Information 5
Inadequate isolation 12
Industry Certications/Registration
Numbers 34
Input VSWR 15
Install Soware 21
L
LED 5
LED Indicators 7
Lightning Danger 4
Linear Gain 15
Liner Output Power 15
Local Network 18
Log Conguration 23
login 17
M
Manual Gain Control 15
Maximum RF input Power 15
Modem Interface 30
modulation selection 19
Monitoring & Alarms 9
N
Noise Figure 15
null modem adapter 23
O
OIP3 15
P
Pass Band Ripple 15
Product Registration Information 4
Program a Filter 19
Propagation Delay 15
R
Reboot 22
Relative Humidity 14
Remote Network 20
Resolution Bandwidth 33
RF Conguration 19
RF Notes 33
RMS Vector Error 15
S
SBC 5
serial cable 23
SNMP 5
SNMP Conguration 20
Spurious Emissions 15
Suggested spectrum analyzer setting 33
Surface Coating 14
System Health 21
System Status 18
T
TCP/IP settings 31
Telnet Session 28, 29
Temperature Range 14
terminal emulation programs 24
Terms used in this manual 5
ermal Management 14
TMI 5
troubleshooting RF issues 33
U
UHCI 5
USB 5
USB Interface 8
W
Wall Mounting 11
Warranty 34
Web based GUI Session 17
Width 14

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Seller warrants that its products are transferred rightfully
and with good title; that its products are free from any law-
ful security interest or other lien or encumbrance unknown
to Buyer; and that for a period of one year from the date of
installation or fifteen months from the date of original ship-
ment, whichever period expires first, such products will be
free from defects in material and workmanship which arise
under proper and normal use and service. Buyer’s exclusive
remedy hereunder is limited to Seller’s correction (either at
its plant or at such other place as may be agreed upon be-
tween Seller and Buyer) of such defects by repair or replace-
ment at no cost to Buyer. Transportation costs in connection
with the return of products to Seller’s plant or designated
facility shall be paid by Buyer. The provisions of this warranty
shall be applicable with respect to any product which Seller
replaces pursuant to it. SELLER MAKES NO WARRANTY,
EXPRESS OR IMPLIED, OTHER THAN AS SPECIFICALLY
STATED ABOVE. EXPRESSLY EXCLUDED ARE THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
PURPOSE. THE FOREGOING SHALL CONSTITUTE ALL OF
SELLER’S LIABILITY (EXCEPT AS TO PATENT INFRINGE-
MENT) WITH RESPECT TO THE PRODUCTS. IN NO EVENT
SHALL SELLER BE LIABLE FOR SPECIAL, CONSEQUENTIAL
OR INCIDENTAL DAMAGES, INSTALLATION COSTS, LOST
REVENUE OR PROFITS, OR ANY OTHER COSTS OF ANY NA-
TURE AS A RESULT OF THE USE OF PRODUCTS MANUFAC-
TURED BY THE SELLER, WHETHER USED IN ACCORDANCE
WITH INSTRUCTIONS OR NOT. UNDER NO CIRCUMSTANCES
SHALL SELLER’S LIABILITY TO BUYER EXCEED THE ACTU-
AL SALES PRICE OF THE PRODUCTS PROVIDED HEREUN-
DER. No representative is authorized to assume for Seller any
other liability in connection with the products.
One Year Limited Warranty
Industry Certifications/Registration Numbers
FCC: NVRCSI-DSP25X-L7, NVRCSI-DSP25X-U7C IC: 4307A-DSP25X-L7, 4307A-DSP25X-U7C
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The CSI-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 Gain 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
Automatic safety precautions are built into the amplifier system. In the case of a catastrophic system event, a shutdown circuit is incorpo-
rated 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:
When a boot up is complete and no alarm conditions exist, the LED indicator will be illuminated green.
Should a fault condition develop the LED will illuminate red and the user may check the status page
of the GUI for the nature of the fault.*
Functional Overview
LED Indicator
*Note: During Power up, the repeater will require a approximately three minutes for
the internal computer to boot up. During this time the LED on the front panel may light
and go out several times.
Do not unplug the unit while it is in the boot up process!

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EIA232 Pin Specifications
The diagram above is for reference only, it’s intended to provide a quick source for pinout informa-
tion 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.
To allow monitoring and control, the repeater 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 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 Text Menu Interface (TMI). See command line interface section for further detail.
The Universal Serial Bus (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 and can
be used for software updates and filter file uploads.
Local Communication Interface Ports
USB Interface
The Ethernet AUI conforms to IEEE 802.3 and is capable of supporting 10/100 Mbps communications
speeds. This port is used to provide access to the GUI.
Ethernet
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When troubleshooting RF issues, and when surveying challenging RF en-
vironments, it’s important to have a spectrum analyzer capable of measur-
ing the frequency that you are working with. An attenuator should be used
to protect the input, when connected to a source of RF power such as the
repeater or a powered DAS.
Both Uplink and Downlink should be measured. Downlink should be
measured on the donor cable and at the output (server) port of the powered
up repeater, and Uplink at the lead from the DAS (on fiber/powered DAS’s,
where the lead would connect to the server port on the repeater) and at
the donor port with the repeater powered up. Measurements may also be
necessary at server antenna locations. Your spectrum analyzer will need to
be equipped with a whip antenna for this.
Resolution Bandwidth (RBW) should be set at 200 kHz for GSM and 1 MHz
for CDMA. If you cannot select these values, the closest available values
should be used. Video filter should be about one tenth of RBW. Other
settings like span are whatever is appropriate. One should also make sure
that there are no signals above the top of the screen.
If you cannot see an adjacent out of band signal when using the 1 MHz
RBW filter, you can decrease the RBW, to see the close-in-frequency sig-
nals. Be sure to set the RBW back when you want to measure the power
level.
Suggested spectrum analyzer setting
RF Notes
To prevent overload of the DSP input stages, the maximum measured level of
in-band or out of band signals should be less than -50 dBm when the DSP gain
is set to 85 dB, -40 dBm when set to 75 dB, etc. This applies when there is one
dominant signal and applies TO BOTH THE DOWNLINK AND UPLINK. If there
are two dominant signals, and the gain is set to 85 dB, then the level of each
signal should be kept to less than -53 dBm. With three signals, each should be
less than -55 dBm. With ten signals each should be less than -60 dBm. This lat-
ter reduction prevents the composite power of the multiple signals from exceed-
ing an acceptable level. Add fixed attenuators in line with the donor antenna
line/DAS feed to keep signals below the levels indicated above.

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If you are set up to use DHCP, the window shown below will be displayed.
Select “Use the following IP address:” and enter “192.168.1.2.” The subnet mask
should automatically populate to “255.255.255.0”.
Nothing else will need to be chosen or entered. Click “OK”, then “OK again and
retry connection.
A crossover Ethernet cable (supplied) must be used for Web Interface access.
As a reminder, you must verify the Ethernet port on your laptop is powered. If
your laptop is on battery power, the Ethernet port may be inactive by default. If
this is the case simply plug in the laptop to a 110vac source or change the power
settings to enable the Ethernet port when the laptop is using battery power.
-9-
All cables should be checked for shorts and opens. Also verify that there are no cables with loose or poor connections. RF leakage could
cause oscillation to occur under some conditions.
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 site he or she has selected before
the system is turned on.
If cables and alignment are acceptable and a problem persists, it may be necessary to use a spectrum analyzer to examine the signal
environment in which the unit is operating. The existence of strong adjacent channel signals within the frequency band(s) can cause the
AGC to reduce the amplifier’s gain or cause alarms. In some cases additional filtering or attenuation might be required to reject these
unwanted signals. In some instances, the donor 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 oth-
erwise reduced or eliminated without expensive and possibly prohibitive measures. In these cases it may not be practical to use the CSI
repeater for providing coverage to these sites.
1:1 PORT CONFIGURATION
Input: One single band duplex port, from the dual band donor.
Output: One single band duplex port to the DAS.
There are no physical connections provided to specifically communicate system or alarm status. This information is embedded in the
information accessible via the communication ports described earlier.
Monitoring & Alarms
System Set-Up Considerations
Selection of external attenuators to be used in line with the Antenna Port(s)

-10-
If a CSI repeater is installed in an area with very strong desired and/or undesired signals, it is important to ensure that the overall signal
levels are optimized to be within the best operating range of the repeater. Additionally, de-sensing of a nearby base station site must be
avoided. These goals can be accomplished by properly attenuating the antenna port(s) in the path of the donor antenna(s). In effect,
one can imagine that the particular repeater deployment is electrically moved farther from the base station using attenuators that are
equivalent to increasing the path loss from the donor antenna to the base station. The following potential outcomes result from the use
of attenuators on the donor port(s) of the unit: Uplink output power, as reported by the repeater, is reduced by the value of the attenua-
tion, protecting nearby base stations. Downlink signal to noise ratio is high at the point of the attenuator, resulting in slight but negligible
reduction in downlink performance. Other performance is essentially unchanged.
Donor Port
Server port attenuation may also be necessary, particularly where a powered DAS is present. The selection guidelines below apply to
both server and donor ports. In order to properly measure uplink signal strength, a signal generator should be used. If a signal generator
is not available, placing a test call while under the server antenna with the least path loss to the repeater should provide reasonable data.
The following potential outcomes result from the use of attenuators on the server port(s) of the CS repeater: Downlink output power, as
reported by the unit, is reduced by the value of the attenuation. Uplink incoming power from the DAS is reduced, along with potentially
strong and/or harmful out-of-band signals (including noise) that are generated by the DAS.
Server Port
Attenuator Selection Guidelines
Accurate attenuator values need to be chosen to ensure that the maximum total power (higher of Composite or In-Band Input) applied to
the donor and server port(s) does not exceed the following thresholds:
Input Signal Max Gain Input Signal Max Gain
<-45 dBm 85 dB -32.2 dBm 69 dB
-44.3 dBm 84 dB -31.4 dBm 68 dB
-43.6 dBm 83 dB -30.6 dBm 67 dB
-42.9 dBm 82 dB -29.8 dBm 66 dB
-42.2 dBm 81 dB -29 dBm 65 dB
-41.5 dBm 80 dB -28.2 dBm 64 dB
-40.6 dBm 79 dB -27.4 dBm 63 dB
-39.7 dBm 78 dB -26.6 dBm 62 dB
-38.8 dBm 77 dB -25.8 dBm 61 dB
-37.9 dBm 76 dB -25 dBm 60 dB
-37 dBm 75 dB -24.4 dBm 59 dB*
-36.2 dBm 74 dB -23.8 dBm 58 dB*
-35.4 dBm 73 dB -23.2 dBm 57 dB*
-34.6 dBm 72 dB -22.6 dBm 56 dB*
-33.8 dBm 71 dB -22 dBm < 55 dB*
-33 dBm 70 dB
*We recommend padding this level due to potential for fluctuating signal.
-25 dBm is the maximum input signal level that should be applied to the repeater, even if the gain is lower than 55 dB.
Input signals exceeding these thresholds will result in composite input attenuation, called “ADC Protect” (Analog to Digital Converter
Protection). Output power is reduced whenever the above thresholds are exceeded by reducing the gain by 1dB for each 1 dB that the
threshold is exceeded. ADC Protect should not be confused with AGC (Automatic Gain Control), which reduces gain to prevent In-Band
(measured) output power from exceeding the specified maximum output level. To determine the total power applied to the donor and
server ports, please reference the “Composite Input” values as reported in the Web (“System Status”) or Menu (“Link Status”) interfaces
(depicted and explained later in this manual).
Large delta’s between in-band and composite input signals:
Care should be taken to isolate the best donor site to ensure the least possible delta between in-band and composite downlink signals. If
the (downlink) composite input exceeds the in-band input by more than 3 dB for the LTE band the maximum output power will be reduced.
-31-
Instructions to change TCP/IP settings on your Windows computer.
Click in the Network Connections Icon in the Control Panel. See below.
Right click on Local Area Connection - and select “Properties”.
Scroll down to “Internet Protocol (TCP/IP) and click on the “Properties” button.
Additional Tips