Related Manuals for ADC ClearGain Dual Inline Tower Mounted Amplifier System
Summary of Contents for ADC ClearGain Dual Inline Tower Mounted Amplifier System
- Page 1 ADCP-75-214 Issue 2 September 2006 ® ClearGain 1800 MHz and 2100 MHz Dual Inline Tower Mounted Amplifier System User Manual 1383772 Rev A...
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Page 2: Adcp
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. -
Page 3: Table Of Contents
CUSTOMER INFORMATION AND ASSISTANCE ........... 22 ADCP-75-214 • Issue 2 • September 2006 • Preface Page iii © 2006, ADC Telecommunications, Inc. Page... - Page 4 ADCP-75-214 • Issue 2 • September 2006 • Preface Blank Page iv © 2006, ADC Telecommunications, Inc.
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Page 5: About This Manual
ABOUT THIS MANUAL This document describes the ADC ClearGain 1800 and 2100 MHz Dual Inline Tower Mounted Amplifier (TMA) Systems and provides complete instructions for installing these products on a communications tower. ADMONISHMENTS Important safety admonishments are used throughout this manual to warn of possible hazards to persons or equipment. -
Page 6: List Of Acronyms
LED – Light Emitting Diode LNA – Low Noise Amplifier MHU – Masthead Unit OOK – On/Off Key PDU – Power Distribution Unit RET – Remote Electrical Tilt RF – Radio Frequency TMA – Tower Mounted Amplifier Page vi © 2006, ADC Telecommunications, Inc. -
Page 7: Product Overview
KOREA Max Current: 2A Date: YYYY/MM/DD P/N: 1344027 S/N: XXXXXXXXX ClearGain PDU FAIL INPUT ALARM RS485 ADCP-75-214 • Issue 2 • September 2006 Figure 1 CONNECT MHU 1 MHU 2 MHU 3 21297-B Page 1 © 2006, ADC Telecommunications, Inc. -
Page 8: Issue
ASSEMBLED IN Input: 5 to 24VDC KOREA Max Current: 2A Date: YYYY/MM/DD P/N: 1344027 S/N: XXXXXXXXX GROUND Page 2 © 2006, ADC Telecommunications, Inc. COAXIAL CABLE TO ANTENNA ANT A BTS A RF SIGNALS DC POWER FAULT DETECTION SITE POWER... -
Page 9: System Installation
ClearGain MHU has no visible damages or defects. Place ClearGain MHU as close to the antenna as possible. ADCP-75-214 • Issue 2 • September 2006 Figure 3. Before any installation, Page 3 © 2006, ADC Telecommunications, Inc. - Page 10 1. Connect the ground cable to MHU bottom using M8 star washer and nut. 2. Connect the other end of the cable to a good ground (site ground) with a reliable joint. Page 4 © 2006, ADC Telecommunications, Inc. Figure 3. Typical MHU Clamp Mounting Kit Components (Figure...
- Page 11 To improve connection reliability the connector joint can be protected. This is done, by installing specific weatherproof tape over the cable connectors. Loose cable should be secured to the tower using cable brackets. ADCP-75-214 • Issue 2 • September 2006 Page 5 © 2006, ADC Telecommunications, Inc.
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Page 12: Pdu Installation
Masonry mounting screws are not provided. Page 6 © 2006, ADC Telecommunications, Inc. Figure 4. Example of PDU Standard Wall Mount Figure 4. Below are guidelines for... - Page 13 • Alarm cable • Communication cables • MHU (Bias-T) cables • Ground cable. ADCP-75-214 • Issue 2 • September 2006 is available that allows the PDU to be mounted in a rack. If © 2006, ADC Telecommunications, Inc. 21300-A Page 7...
- Page 14 Red is positive, Black is negative, and White/Green is for ground.) 6. Connect the power cable to the “INPUT” connector on the PDU front panel. Page 8 © 2006, ADC Telecommunications, Inc. Figure 6. Cable Terminations on Front of PDU Figure 7 Figure 7 shows the RS-485 connection.
- Page 15 (Switch 1 and 3 Set to “ON” to Indicate Use of MHU Ports 1 and 3) Figure 8. Example of DIP Switch Setting on the PDU ADCP-75-214 • Issue 2 • September 2006 OUTPUT G ND RS 485A RS 485B © 2006, ADC Telecommunications, Inc. 21307-B Page 9...
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Page 16: Bias-T Installation
2.4.2 Additional Lightning Protection ADC recommends that the operator install further lightning protection between the MHU and Bias-T. It must allow the DC voltage to pass through the lightning protector, if it does not then the Bias-T should be mounted on the antenna side of the protection. -
Page 17: Troubleshooting
BTS. Disconnect antenna feeder cable from ANT side of Bias-T and measure voltage using a multimeter (Voltage measurement, DC). Nominal DC output power should be 14–16 VDC. ADCP-75-214 • Issue 2 • September 2006 Page 11 © 2006, ADC Telecommunications, Inc. -
Page 18: Troubleshooting 4-Port Cleargain Dual Inline Dual Duplex Tower Mounted Amplifiers
POINTS ARE THE ANTENNA AND FEEDLINE JUMPERS/ CONNECTORS. OR SURGE PROTECTORS ARE PRESENT. IF A SURGE PROTECTOR IS ANYWHERE BETWEEN THE BIAS-T AND THE MHU Page 12 © 2006, ADC Telecommunications, Inc. ANTENNA JUMPER FEEDLINE JUMPERS HARD LINE HARD LINE... -
Page 19: Troubleshooting
(KΩ/ΜΩ). 3. Antenna/cable analyzer checks. Measure the in-band RL/VSWR of the system ______ dB or ratio. Check distance to Fault for anomalies. FEED LINE ADCP-75-214 • Issue 2 • September 2006 FEED LINE Page 13 © 2006, ADC Telecommunications, Inc. -
Page 20: Troubleshooting Hints
• Normal in-band RL should be greater than 18dB. If less than 18dB, check protector, feedline, jumpers and antenna. • Mark receive and transmit bands to verify correct filtering. • Check the distance to fault to identify any anomalies on the feedline. Page 14 © 2006, ADC Telecommunications, Inc. -
Page 21: Troubleshooting Flowchart (For Systems With Three-Port Mhus)
• CHECK BIAS-T FOR 18VDC. PRESENT, REPLACE BIAS-T. • CHECK RESISTANCE OF FEEDLINE. LO OHMS OR SHORTED; PROBLEM TOP SIDE. HI OHMS OR OPEN IS NORMAL BUT ALSO MAY INDICATE A DISCONTINUITY. 21401-A © 2006, ADC Telecommunications, Inc. Page 15... -
Page 22: Troubleshooting Matrix
Total Fail Short Circuit Protection Circuit Fluctuation Min 180 mA Input Voltage Output Voltage Page 16 © 2006, ADC Telecommunications, Inc. to consult a troubleshooting matrix, see Table 1. Troubleshooting Matrix SPECIFICATION EXPLANATION < 180 mA Fail 180 – 220 mA 370 –... -
Page 23: Return Loss Sweep Guide
RECOMMEND CONNECTOR/LINE/ANTENNA CHECKS DURING NEXT SCHEDULED MAINTENANCE PERIOD WHEN TOWER CREW AVAILABLE. GOOD ANTENNA PORT: ANTENNA CATASTROPHICALLY FAILED "OPEN". ANTENNA PORT: ANTENNA CATASTROPHICALLY FUSED "SHORT". ADCP-75-214 • Issue 2 • September 2006 18270-A Page 17 © 2006, ADC Telecommunications, Inc. -
Page 24: Specifications
LNA with filter Physical Connectors Intermodulation Power Environmental Quality Page 18 © 2006, ADC Telecommunications, Inc. Table 2. 1800 Masthead Unit Specifications PARAMETER RX (up link) frequency range TX (down link) frequency range Tx path Insertion Loss Power Handling Capability Return Loss... -
Page 25: 2100 Masthead Unit
(6.5 x 8.3 x 3.2 inches) 4.2 kg (9.3 lbs.) Gray Metallic 7/16 DIN Female 7/16 DIN Female < –106dBm (2x20W) 15 VDC 220 mA –40°C to +65°C (–40°F to +149°F) IP65 >500,000 hours IEC 61000-4-5 Page 19 © 2006, ADC Telecommunications, Inc. -
Page 26: Pdu (Power Distribution Unit)
Capacitance between RS485 A or RS485 B Capacitance between RS485 A or RS485 B and DC/RS485 GND Page 20 © 2006, ADC Telecommunications, Inc. Table 4. Power Distribution Unit (PDU) Specifications SPECIFICATION 20–56VDC positive/negative ground (Input polarization protected) 15V, 4% (Over voltage protection) 4% in 20mA –... -
Page 27: Bias-T
(2.2 x 3.7 x 1.6 inches) 0.3 Kg (0.7 lbs.) Gray Metallic Aluminum –40 to +65º C (–40°F to +149°F) –40 to +70º C (–40°F to +158°F) IP65 500,000 hours 10 KA 8 ns 20 ns Page 21 © 2006, ADC Telecommunications, Inc. -
Page 28: Customer Information And Assistance
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.