GlearGain® Ground Mounted Amplifier System User Manual (ADCP

GlearGain® Ground Mounted Amplifier System User Manual (ADCP
®
ClearGain Ground Mounted
Amplifier System
User Manual
ADCP-75-233 • Issue 2 • 7/2007
1412407 Rev A
ADCP-75-233 • Issue 2 • 7/2007 • Preface
COPYRIGHT
© 2007, ADC Telecommunications, Inc.
All Rights Reserved
REVISION HISTORY
ISSUE
DATE
REASON FOR CHANGE
1
06/2007
Original.
2
07/2007
Add 800MHz unit
TRADEMARK INFORMATION
ADC is a registered trademark of ADC Telecommunications, Inc.
DISCLAIMER OF LIABILITY
Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice. In no
event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits and ADC further
disclaims any and all liability for indirect, incidental, special, consequential or other similar damages. This disclaimer of
liability applies to all products, publications and services during and after the warranty period.
This publication may be verified at any time by contacting ADC’s Technical Assistance Center at 1-800-366-3891, extension 73475
(in U.S.A. or Canada) or 952-917-3475 (outside U.S.A. and Canada), or by e-mail to connectivity_tac@adc.com.
ADC Telecommunications, Inc.
P.O. Box 1101, Minneapolis, Minnesota 55440-1101
In U.S.A. and Canada: 1-800-366-3891
Outside U.S.A. and Canada: (952) 938-8080
Fax: (952) 917-1717
Page ii
ADCP-75-233 • Issue 2 • July 2007 • Preface
TABLE OF CONTENTS
Content
Page
ABOUT THIS MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
ADMONISHMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
FCC COMPLIANCE STATEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
CERTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
STANDARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
LIST OF ACRONYMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
1
PRODUCT OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1
2
3
4
5
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3
System Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.4
GMA Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SYSTEM INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1
GMA Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2
PDU Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1
Troubleshooting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2
Troubleshooting Matrix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.3
Return Loss Sweep Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
GMA SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.1
DD800 Full Band Masthead Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2
DD1900 Full Band Masthead Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.3
DD1900 Full Band With 800 Diplexer GMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
CUSTOMER INFORMATION AND ASSISTANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Page iii
© 2007, ADC Telecommunications, Inc.
ADCP-75-233 • Issue 2 • July 2007 • Preface
Blank
Page iv
© 2007, ADC Telecommunications, Inc.
ADCP-75-233 • Issue 2 • July 2007 • Preface
ABOUT THIS MANUAL
This document describes the ADC ClearGain Ground Mounted Amplifier system and provides
complete instructions for installing this product at a communications tower.
ADMONISHMENTS
Important safety admonishments are used throughout this manual to warn of possible hazards to
persons or equipment. An admonishment identifies a possible hazard and then explains what
may happen if the hazard is not avoided. The admonishments — in the form of Dangers,
Warnings, and Cautions — must be followed at all times. These warnings are flagged by use of
the triangular alert icon (seen below), and are listed in descending order of severity of injury or
damage and likelihood of occurrence.
Danger: Danger is used to indicate the presence of a hazard that will cause severe personal
injury, death, or substantial property damage if the hazard is not avoided.
Warning: Warning is used to indicate the presence of a hazard that can cause severe personal
injury, death, or substantial property damage if the hazard is not avoided.
Caution: Caution is used to indicate the presence of a hazard that will or can cause minor
personal injury or property damage if the hazard is not avoided.
FCC COMPLIANCE STATEMENT
ADC ClearGain Ground Mounted Amplifier systems covered in this document have been certified
to comply with the requirements for class A computing devices per part 15 of the FCC regulations.
Warning: This equipment generates, uses, and can radiate radio frequency energy and if not
installed and used in accordance with the instruction manual, may cause interference to radio
communications. It has been tested and found to comply with limits for a Class A digital device
pursuant to Subpart B of Part 15 of FCC Rules, which are designed to provide reasonable
protection against such interference when operated in a commercial environment. Operation of
this equipment in a residential area is likely to cause interference to TV and radio reception in
which case the user, at their own expense, will be required to take whatever measures may be
required to correct the interference.
This equipment does not exceed Class A limits for radio emission for digital apparatus, set out
in the radio interference regulation of the authorization methods of Industry Canada. Operation
in a residential area may cause unacceptable interference to TV and radio reception requiring
the owner or operator to take whatever steps are necessary to correct the interference.
Page v
© 2007, ADC Telecommunications, Inc.
ADCP-75-233 • Issue 2 • July 2007 • Preface
CERTIFICATION
ADC ClearGain Ground Mounted Amplifier systems covered in this document have been tested
and found to comply with the requirements of UL 60950.
STANDARDS
The following is a listing of applicable standards documents:
Environmental
Vibration
Regulatory
Lightning Protection
Storage
Transport
Operation
EMC
LIST OF ACRONYMS
ANT – Antenna (Port on MHU)
BTS – Base Transceiver Station
GMA – Ground Mounted Amplifier
LNA – Low Noise Amplifier
MHU – Masthead Unit
PDU – Power Distribution Unit
RF – Radio Frequency
RX – Receive
TX – Transmit
Page vi
© 2007, ADC Telecommunications, Inc.
IEC 61000-4-5
ETS3019-1-1
ETS3019-1-2
ETS3019-1-4
ETS300 342-2
ADCP-75-233 • Issue 2 • July 2007
1 PRODUCT OVERVIEW
1.1
General Description
The ClearGain Ground Mounted Amplifier system is composed of a combination of two
functional components: the ClearGain Power Distribution Unit (PDU) and up to three Ground
Mounted Amplifiers (GMA). Figure 1 shows where these components are located in a typical
application on a communications tower.
ANTENNA
ClearGain GMA
POWER
POWER
ANT
1900
BTS
BASE
STATION
ANT
1900
BTS
Power Distribution Unit
+ Ð
INPUT
NO COM
NC
ALARM
FAIL
MHU
DISCONNECT
OK
MHU 1
OK
MHU 2
OK
MHU 3
OK
MHU 4
ClearGain PDU
OK
MHU 5
OK
MHU 6
21955-A
Figure 1. Functional Components of a ClearGain GMA System
One PDU may support up to three GMAs. The ClearGain system also includes power cables
and alarm cables.
Page 1
© 2007, ADC Telecommunications, Inc.
ADCP-75-233 • Issue 2 • July 2007
1.2
Functional Description
The basic purpose of a ClearGain Ground Mounted Amplifier system is to amplify the uplink
signal. The ClearGain system also provides alarming. Figure 2 depicts how the system
components are involved in system function.
DOWNLINK
FILTER/LNA
FILTER/LNA
UPLINK
UPLINK
PWR
BTS
ANT
PWR
BTS
RX/TX
TO ANTENNA
DOWNLINK
COAXIAL CABLE
TO ANTENNA
ANTENNA
COAXIAL CABLE
GMA
ANT
RX/TX
SITE
ALARM
DC
POWER
DC
POWER
FAULT
DETECTION
POWER
BASE
STATION
FAULT
DETECTION
Power Distribution Unit
+ Ð
INPUT
NO COM
NC
FAIL
ALARM
MHU
DISCONNECT
OK
MHU 1
OK
MHU 2
ClearGain PDU
OK
MHU 3
OK
MHU 4
OK
MHU 5
OK
MHU 6
21952-A
Figure 2. System Function
• GMA—located at the base of the tower, performs the amplifier function on the uplink
signal. Two subcomponents of the GMA, an RF filter and a Low Noise Amplifier (LNA),
are involved in the amplifier function. The downlink signal is not amplified.
• PDU—located in the base station, provides DC current for use in the amplifier function.
The PDU outputs the DC current through a front port from which it travels by way of a
coaxial cable to the GMA.
• The PDU also monitors the status of all GMAs simultaneously by sensing their current
draws. If any of the GMAs fails the PDU gives an alarm to the BTS.
A single PDU can support up to three GMAs.
Page 2
© 2007, ADC Telecommunications, Inc.
ADCP-75-233 • Issue 2 • July 2007
System Types
There are two types of GMA ClearGain systems. The system types are described in the
following topics.
1.3.1
800 or1900 Dual Duplex Full Band
In this single power system, diagrammed in Figure 3, from one to six signals of the same
bandwidth are amplified (two signals are amplified per GMA).
GMA 3
GMA 2
DOWNLINK
FILTER/LNA
FILTER/LNA
UPLINK
UPLINK
PWR
BTS
ANT
PWR
BTS
RX/TX
TO ANTENNA
DOWNLINK
COAXIAL CABLE
ANTENNA
TO ANTENNA
GMA 1
COAXIAL CABLE
1.3
ANT
RX/TX
SITE
ALARM
DC
POWER
DC
POWER
FAULT
DETECTION
POWER
BASE
STATION
FAULT
DETECTION
Power Distribution Unit
+ Ð
INPUT
NO COM
NC
ALARM
FAIL
MHU
DISCONNECT
OK
MHU 1
OK
MHU 2
ClearGain PDU
OK
MHU 3
OK
MHU 4
OK
MHU 5
OK
MHU 6
21953-A
Figure 3. 800 or 1900 Dual Duplex Full Band System
Page 3
© 2007, ADC Telecommunications, Inc.
ADCP-75-233 • Issue 2 • July 2007
1.3.2
1900 Dual Duplex with 800 Diplexer (1900 MHz Amplified Only)
In this single power system, diagrammed in Figure 4, from one to six 1900 MHz signals are
amplified. 800 MHz signals are diplexed on the GMA antenna line.
800
ANTENNA
1900
ANTENNA
800/1900
DIPLEXER
GMA 3
GMA 2
DOWNLINK
FILTER/LNA
FILTER/LNA
UPLINK
UPLINK
DIPLEXER
800
BTS
DIPLEXER
ANT
1900
BTS
PWR
800
RX/TX
1900
RX/TX
SITE
ALARM
POWER
800
BTS
1900
BTS
PWR
800
RX/TX
DC
POWER
1900
RX/TX
DC
POWER
FAULT
DETECTION
BASE
STATION
ANT
FAULT
DETECTION
Power Distribution Unit
+ Ð
INPUT
NO COM
NC
ALARM
FAIL
MHU
DISCONNECT
OK
MHU 1
OK
MHU 2
ClearGain PDU
OK
MHU 3
OK
MHU 4
OK
MHU 5
OK
MHU 6
21954-A
Figure 4. 1900 Dual Duplex with 800 Bypass (1900 MHz Amplified Only)
Page 4
© 2007, ADC Telecommunications, Inc.
TO ANTENNA
DOWNLINK
COAXIAL CABLE
TO ANTENNA
COAXIAL CABLE
GMA 1
ADCP-75-233 • Issue 2 • July 2007
1.4
GMA Dimensions
3.48 IN.
(8.8 CM)
21979-A
18.85 IN.
(47.9 CM)
14.07 IN.
(35.7 CM)
Figure 5. Ground Mounted Amplifier Dimensions (1900MHz model shown)
2 SYSTEM INSTALLATION
Installation consists of two main steps:
1. Installing the GMA: mechanical attachment, coaxial cables, ground cable.
2. Installing the PDU: mechanical attachment, operation power, and alarms.
2.1
GMA Installation
Each ClearGain GMA includes a cable management bracket, and hardware for proper
installation in a 19-inch rack. Optional extension brackets for 23-inch rack insatlaltion are
available by ordering catalog number EB-35P.
2.1.1
Rack Mount Installation
1. Obtain the following tools and equipment:
• Flat blade or Phillips screwdriver (type to match mounting screws)
• #12-24 x 0.50-inch binder head machine screws. (Four required per chassis.)
2. Locate the equipment rack mounting space that is specified for the GMA.
3. Place the GMA in the assigned mounting space and align the holes in the mounting
brackets with the holes in the equipment rack. See Figure 6.
4. Secure GMA mounting brackets to equipment rack using the 12-24 x 0.50-inch binder
head machine screws provided. Torque these screws to approximately 27 pound-inches
(3.1 Newton meters).
Page 5
© 2007, ADC Telecommunications, Inc.
ADCP-75-233 • Issue 2 • July 2007
12-24 SCREWS
(2 PLACES
EACH SIDE)
GROUND
MOUNTED
AMPLIFIER
CABLE
BRACKETS
21980-A
POWER
DISTRIBUTION
UNIT
Figure 6. GMA Rack Installation
2.1.2
GMA Chassis Ground Connection
Good grounding of the ClearGain GMA is important to protect the unit against voltage surges.
These surges could be caused by, for example, lightning.
A stud is provided on the rear side of the chassis for connecting a grounding wire to the chassis.
Use the following procedure to connect the grounding wire to the chassis and to route the
grounding wire to an approved earth ground source.
1. Obtain a length of #18 AWG (1.00 mm) insulated stranded copper wire for use as a
chassis grounding wire.
2. Terminate one end of the wire with a ring terminal.
3. Locate the chassis ground stud at the rear of the GMA as shown in Figure 7.
4. Attach the ring end of the wire to the chassis ground stud using M3 nut and washer (see
Figure 7).
Page 6
© 2007, ADC Telecommunications, Inc.
ADCP-75-233 • Issue 2 • July 2007
21998-A
Figure 7. Chassis Ground Stud
5. Route the free end of the chassis grounding wire to an approved (per local code or
practice) earth ground source.
6. Cut the chassis grounding wire to length and connect it to the approved ground source as
required by local code or practice.
Note: Be sure to maintain reliable grounding. Pay particular attention to ground source
connections.
2.1.3
Installing Coaxial Cables
Caution: Before connecting any coaxial cables, ensure that the BTS transmitter output is
turned off and that precautions are taken to ensure that the transmitter cannot be activated
during the equipment installation.
Two short coaxial jumpers should be pre-made. One will connect the BTS port to the radio and
the other will connect the ANT port to the hardline.
Most installations require two good quality flexible coax jumpers, normally terminated with
7/16DIN–7/16DIN plug connectors. Check gender of hardline and check if Antenna pigtail is
present, adjust accordingly for a correct match.
Loose cable should be secured using cable brackets.
Page 7
© 2007, ADC Telecommunications, Inc.
ADCP-75-233 • Issue 2 • July 2007
2.2
PDU Installation
Warning: Never install the Power Distribution Unit in a wet location or during a lightning
storm. When installing or modifying communication lines, disconnect lines at the interface
before working with uninsulated lines or terminals to prevent electrical shock.
A mounting bracket, shown in Figure 8, allows the PDU to be mounted on a 19–inch rack.
Extension brackets may be used to mount the PDU in a 23-inch rack.
MOUNTING
BRACKET
PDU
18223-A
Figure 8. PDU Rack Mount Bracket 19-inch
2.2.1
Installation of PDU Cables
There are three PDU cables: the ground cable, the alarm cable, and the power cable. Figure 9
shows the cable terminations on the front of the PDU. Connect the cables as follows:
1. Connect the ground cable under the grounding screw on the PDU front panel. Connect the
other end of the cable to the site ground location.
2. Connect the alarm cable leads to the base station or site alarm system. Use either
“Normally Open” or “Normally Closed” contacts. Figure 10 shows the PDU alarm logic
3. Connect the other end of the alarm cable to the PDU “ALARM” connector.
4. Connect the power cable to the site DC power connector. (The power cable has three leads.
Red is positive, Black is negative, and Yellow/Green is for ground.)
5. Connect the power cable to the “INPUT” connector on the PDU front panel.
6. Connect two mini-coaxial cables to both PWR ports on the GMA.
7. Connect the other end of the mini-coaxial cables to the MHU ports on the PDU.
8. Route mini-coaxial cables through cable management brackets to reduce cable clutter.
9. Repeat Step 6 through Step 8 for up to three GMAs.
Page 8
© 2007, ADC Telecommunications, Inc.
ADCP-75-233 • Issue 2 • July 2007
Figure 9. Cable Terminations on Front of PDU
(Left to Right: Power Cable, Alarm Cable, Three MHU Cables, Ground Cable)
POWER DISTRIBUTION UNIT
ALARM
RELAY
PDU
ALARM
LOGIC
DC
INPUT
OUTPUTS
16773-A
NO
(NORMALLY
OPEN)
COM
(COMMON)
NC
(NORMALLY
CLOSED)
Figure 10. PDU Alarm Logic
Page 9
© 2007, ADC Telecommunications, Inc.
ADCP-75-233 • Issue 2 • July 2007
2.2.2
Setting the DIP Switch on the PDU
The PDU has a DIP switch to disconnect unused GMA (labeled MHU) outputs (see Figure 11).
For the MHU outputs that are used, the DIP switch must be in the “down” position. Unused
outputs must be disconnected by setting the DIP switch to “ON”.
Figure 11. Example of DIP Switch Setting on the PDU
(Switches 1, 2, 3, and 6 Set to “Down” to Indicate Use of MHU Ports 1, 2, 3, and 6)
3 TROUBLESHOOTING
If troubles occur follow the procedures noted below:
3.1
Troubleshooting Procedure
Use this procedure to troubleshoot any fullband system with one or more two-port GMAs.
When something is wrong with the system, the alarm LED on the PDU is activated and the PDU
alarm output is activated.
If the alarm LED is red, troubleshoot for problems as follows:
1. Check that the power is fed into the PDU. PDU alarm output is activated if there is no DC
fed in it, or if DC is out of the range (+20 to +56 VDC or –20 to –56 VDC) or is incorrect.
2. Each MHU output has a green LED, and it must be on if the output is used. Check that all
the green LED’s on the used outputs are on.
3. If one of the used outputs has a LED off, there is something wrong with the PDU, GMA or
the jumper cable.
4. Disconnect the mini coaxial cable from the PDU and measure from the connector, that the
PDU feeds 18VDC to the GMA. Do this measurement using a multimeter (Voltage
measurement, DC). If there is <17 VDC or >19 VDC found from the connector, there is
something wrong with the cables.
Page 10
© 2007, ADC Telecommunications, Inc.
ADCP-75-233 • Issue 2 • July 2007
If the MHU output LED is flashing green, troubleshoot for problems as follows:
Verify that the feedline (base station) and antenna jumpers are connected to the correct ports on the
GMA. The alarm LED flashes green if the antenna and base station cables are connected wrong.
If trouble is visually indicated by LED’s or no illumination on a specific GMA, swap minicoaxial cables on PDU ports to see if trouble remains or moves.
3.1.1
Troubleshooting
1. Observe and record PDU LED status. Disable or disconnect RF from BTS. Remove any
surge protectors.
2. Multimeter checks:
a. Measure voltage on the mini-coaxial cable _______ VDC. Normal is 18VDC.
b. Measure resistance of the feedline _______ Ohms. Normal is High or Very high Ω
(KΩ/ ΜΩ) .
HARD
LINE
3. Antenna/cable analyzer checks. Measure the in-band RL/VSWR of the system from the
BTS port of the GMA _______dB or ratio. Check distance to Fault for anomalies.
0
17
dB
Typical RL Sweep
4. Re-connect to original configuration and return to service. PDU should illuminate a green
LED for each active GMA if there are no faults in the system.
5. Check with operators for improved performance.
Page 11
© 2007, ADC Telecommunications, Inc.
ADCP-75-233 • Issue 2 • July 2007
3.1.2
Troubleshooting Hints
• If voltage is outside of the normal range, trace it back towards the fault.
• If no resistance or low resistance, check protector, feedline, jumpers and GMA.
• Normal in-band RL should be greater than 14dB. If less than 14dB, check protector,
feedline, jumpers and antenna.
• Mark receive and transmit bands to verify correct filtering.
• Check distance to fault to identify any anomalies on the feedline.
3.2
Troubleshooting Matrix
Note: ClearGain PDU DIP switches must be in the down position for each active MHU!
Note: ClearGain PDU input voltage must be in the range of +20 to +56 VDC or –20 to –56
VDC.
Table 1. PDU LED Indicators
CLEARGAIN GMA TYPE
FAIL LED
MHU LED
STATUS
EXPLANATION
1900 Fullband
Off
Green (solid)
OK
GMA operational
Red
Off
By-pass
Faulty PDU connection
Check 18 VDC
Red
Off
Failed
LNA failure. GMA in bypass
Replace GMA
Red
Green (flashing)
Failed
Antenna and Base Station
jumpers are connected wrong
Swap connectors
Off
Green (solid)
OK
GMA operational
Red
Off
By-pass
Faulty PDU connection
Check 18 VDC
Red
Off
Failed
LNA failure. GMA in bypass
Replace GMA
Red
Green (flashing)
Failed
Antenna and Base Station
jumpers are connected wrong
Swap connectors
1900 with 800
Diplexer
Page 12
© 2007, ADC Telecommunications, Inc.
ACTION
—
—
ADCP-75-233 • Issue 2 • July 2007
3.3
Return Loss Sweep Guide
RETURN LOSS SWEEP GUIDE FOR THE RECEIVE SECTION OF THE MHUs.
GOOD
0
BAD
-5
-10
RL dB
-15
-20
-25
v1
v2
v1
v2
-30
-35
-40
-45
NORMAL IN-SYSTEM SWEEP. TYPICAL.
DEGRADATION FROM NORMAL SYSTEM SWEEP.
RL IS STILL GOOD IN RX BAND.
RECOMMEND CONNECTOR/LINE/ANTENNA CHECKS
DURING NEXT SCHEDULED MAINTENANCE PERIOD WHEN
TOWER CREW AVAILABLE.
RESISTANCE LOOKING INTO THE FEEDLINE SHOULD INDICATE HIGH OR INFINITE OHMS.
GOOD
0
BAD
-5
-10
RL dB
-15
-20
-25
v1
v2
v1
v2
-30
-35
-40
-45
ANTENNA PORT: TERMINATED WITH 50 OHM LOAD.
"PERFECT ANTENNA" < 50 OHM LOAD >
ANTENNA PORT: ANTENNA CATASTROPHICALLY
FAILED "OPEN".
ANTENNA PORT: ANTENNA CATASTROPHICALLY
FUSED "SHORT".
18270-A
Figure 12. Return Loss Sweep Guide
Page 13
© 2007, ADC Telecommunications, Inc.
ADCP-75-233 • Issue 2 • July 2007
4 GMA SPECIFICATIONS
The following subsections provide specifications for each GMA type.
4.1
DD800 Full Band Masthead Unit
Table 2 provides specifications for the DD800 Full Band GMA.
Table 2. DD800 Full Band GMA
CATEGORY
PARAMETER
SPECIFICATION
Electrical
Nominal impedance of RF input and outputs
50 Ohm
Frequency Range
TX
869–894 MHz
RX
824–849 MHz
Passband (RX)
Gain
12 dB
Noise Figure
1.4 dB
Dynamic Range
Input at 1 dB compression: 0 dBm
IIP3
+13 dBm
Max Input Power
+10 dBm
851 MHz Rejection
<30 dB
Bypass Insertion Loss
2.0 dB
Isolation in Tx Path
80 dB
Rejection 1850–1998 MHz
80 dB
Insertion Loss of TX Path (TX to Antenna)
0.4 dB
Passband Return Loss
Power
Physical
Connectors
TX Band
>18 dB
RX Band
>18 dB
Intermodulation
–120 dBm
Maximum Input Power (RMS Power)
500 W
Tx Filter Rejection in Rx Band
40 dB
Operational Voltage
7 to 20 Vdc
Operational Current
140 ± 10 mA
Alarm Current Level
350 ± 20 mA
Dimensions (HxWxD)
89 x 483 x 318 mm (3.5 x 19.0 x 12.5 in.)
Weight
11.3 kg (25 lbs.)
Color
Putty white
Antenna Connector
7/16 DIN receptor
BTS Connector
7/16 DIN receptor
Power Connector
TNC
Environmental Operating Temperature
–40° C to +60° C (–40° F to +140° F)
Quality
900,000 hours
MTBF
Page 14
© 2007, ADC Telecommunications, Inc.
ADCP-75-233 • Issue 2 • July 2007
4.2
DD1900 Full Band Masthead Unit
Table 3 provides specifications for the DD1900 Full Band GMA.
Table 3. DD1900 Full Band GMA
CATEGORY
PARAMETER
SPECIFICATION
Electrical
Nominal impedance of RF input and outputs
50 Ohm
Frequency Range
TX
1930–1990 MHz
RX
1850–1910 MHz
Passband (RX)
Gain
12 dB
Noise Figure
1.4 dB
Dynamic Range
Input at 1 dB compression: +3 dBm
IIP3
+13 dBm
Max Input Power
+10 dBm
1915 MHz Rejection
<15 dB
1916 MHz Rejection
<30 dB
Bypass Insertion Loss
2.0 dB
Isolation in Tx Path
80 dB
Rejection 824–894 MHz
80 dB
Insertion Loss of TX Path (TX to Antenna)
0.4 dB
Passband Return Loss
Power
Physical
Connectors
TX Band
>18 dB
RX Band
>18 dB
Intermodulation
–120 dBm
Maximum Input Power (RMS Power)
250 W
Tx Filter Rejection in Rx Band
40 dB
Operational Voltage
7 to 20 Vdc
Operational Current
140 ± 10 mA
Alarm Current Level
350 ± 20 mA
Dimensions (HxWxD)
89 x 483 x 318 mm (3.5 x 19.0 x 12.5 in.)
Weight
11.3 kg (25 lbs.)
Color
Putty white
Antenna Connector
7/16 DIN receptor
BTS Connector
7/16 DIN receptor
Power Connector
TNC
Environmental Operating Temperature
–40° C to +60° C (–40° F to +140° F)
Quality
900,000 hours
MTBF
Page 15
© 2007, ADC Telecommunications, Inc.
ADCP-75-233 • Issue 2 • July 2007
4.3
DD1900 Full Band With 800 Diplexer GMA
Table 4 provides specifications for the DD1900 Full Band With 800 Diplexer GMA.
Table 4. DD1900 Full Band With 800 Diplexer GMA
CATEGORY
PARAMETER
SPECIFICATION
Electrical
Nominal impedance of RF input and outputs 50 Ohm
Frequency Range
TX
1930–1990 MHz
RX
1850–1910 MHz
Passband (RX)
Gain
12 dB
Noise Figure
1.4 dB
Dynamic Range
Input at 1 dB compression: +3 dBm
IIP3
+15 dBm
1915 MHz Rejection
<15 dB
1916 MHz Rejection
<30 dB
Bypass Insertion Loss
2.0 dB
Isolation in Tx Path
80 dB
Rejection 824–894 MHz
80 dB
Max Input Power
+10 dB
Insertion Loss of TX Path (TX to Antenna)
0.4 dB
Passband Return Loss
Power
Physical
Connectors
TX Band
>18 dB
RX Band
>18 dB
Intermodulation
–120 dBm
Maximum Input Power (RMS Power)
250 W
Operational Voltage
7 to 20 Vdc
Operational Current
140 ± 10 mA
Alarm Current Level
350 ± 20 mA
Dimensions (HxWxD)
89 x 483 x 318 mm (3.5 x 19.0 x 12.5 in.)
Weight
11.3 kg (25 lbs.)
Color
Putty white
Antenna Connector
7/16 DIN receptor
BTS Connector
7/16 DIN receptor
Power Connector
TNC
Environmental Operating Temperature
–40° C to +60° C (–40° F to +140° F)
Quality
900,000 hours
MTBF
Page 16
© 2007, ADC Telecommunications, Inc.
ADCP-75-233 • Issue 2 • July 2007
5 CUSTOMER INFORMATION AND ASSISTANCE
PHONE:
U.S.A. or CANADA
Sales:
1-800-366-3691
Extension
73000
Technical Assistance: 1-800-366-3891
Connectivity Extension:
73475
Wireless Extension:
73476
EUROPE
Sales Administration: +32-2-712-65 00
Technical Assistance: +32-2-712-65 42
EUROPEAN TOLL FREE NUMBERS
Germany:
0180 2232923
UK:
0800 960236
Spain:
900 983291
France:
0800 914032
Italy:
0800 782374
ASIA/PACIFIC
Sales Administration: +65-6294-9948
Technical Assistance: +65-6393-0739
ELSEWHERE
Sales Administration: +1-952-938-8080
Technical Assistance: +1-952-917-3475
WRITE:
ADC Telecommunications (S’PORE) PTE, LTD;
100 Beach Road, #18-01, Shaw Towers.
Singapore 189702.
ADC Telecommunications, INC
PO Box 1101,
Minneapolis, MN 55440-1101, USA
ADC European Customer Service, INC
Belgicastraat 2,
1930 Zaventem, Belguim
PRODUCT INFORMATION AND TECHNICAL ASSISTANCE:
connectivity.tac@adc.com
wireless.tac@adc.com
euro.tac@adc.com
asiapacific.tac@adc.com
13944-O
Contents herein are current as of the date of publication. ADC reserves the right to change the contents
without prior notice. In no event shall ADC be liable for any damages resulting from loss of data,
loss of use, or loss of profits and ADC further disclaims any and all liability for indirect, incidental,
special, consequential or other similar damages. This disclaimer of liability applies to all products,
publications and services during and after the warranty period.
Page 17
© 2007, ADC Telecommunications, Inc.
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising