ADCP-75-154
Issue 3
August 2006
1379659 Rev A
ClearGain
®
Tower Mounted
Amplifier System 900/1800 MHzUser Manual
Страница 1: ...ADCP 75 154 Issue 3 August 2006 1379659 Rev A ClearGain Tower Mounted Amplifier System 900 1800 MHz User Manual ...
Страница 2: ...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 ...
Страница 3: ... 3 MHU Dimensions 3 2 SYSTEM INSTALLATION 5 2 1 Installation Overview 5 2 2 Installing the Masthead Unit 5 2 3 PDU Installation 7 2 4 Bias T Installation 11 3 TROUBLESHOOTING 11 4 TROUBLESHOOTING 2 PORT CLEARGAIN DUAL DUPLEX TOWER MOUNTED AMPLIFIERS 12 4 1 Troubleshooting 14 4 2 Troubleshooting Hints 15 5 MHU SPECIFICATIONS 16 5 1 DD900 Narrow Band Masthead Unit 16 5 2 DD900 Full Band Masthead Uni...
Страница 4: ...ADCP 75 154 Issue 3 August 2006 Preface Page iv 2006 ADC Telecommunications Inc Blank ...
Страница 5: ...mage and likelihood of occurrence CERTIFICATION ClearGain 900 1800 MHz has been tested and meets the CE requirements STANDARDS The following listing is a bibliography of applicable regulatory standards LIST OF ACRONYMS ANT Antenna Port on MHU BTS Base Transceiver Station MHU Masthead Unit PDU Power Distribution Unit RF Radio Frequency TMA Tower Mounted Amplifier Danger Danger is used to indicate t...
Страница 6: ...ADCP 75 154 Issue 3 August 2006 Preface Page vi 2006 ADC Telecommunications Inc Blank ...
Страница 7: ...ws where these components are located in a typical application on a communications tower Figure 1 Functional Components of a ClearGain System BASE TRANSCEIVER STATION 21486 A ClearGain PDU SINGLE MODE MASTHEAD UNIT MHU BTS ANT 900 OR 1800 Power Distribution Unit MHU DISCONNECT MHU 1 ALARM INPUT Ð MHU 2 MHU 3 MHU 4 MHU 6 MHU 5 OK FAIL COM NO NC OK OK OK OK OK BTS ANT DC Bias T kit Freq 800 2200MHz ...
Страница 8: ...ansceiver Station BTS at the base of the tower The ClearGain system also provides alarming and lightning protection Figure 2 depicts how the system components are involved in system function As shown Figure 2 System Function Power Distribution Unit MHU DISCONNECT MHU 1 ALARM INPUT Ð MHU 2 MHU 3 MHU 4 MHU 6 MHU 5 OK FAIL COM NO NC OK OK OK OK OK BASE STATION 21487 A ClearGain PDU C O A X I A L C A ...
Страница 9: ...atus of all MHUs simultaneously by sensing their current draws If any of the MHUs fails or if there is a cut or short circuit in the coaxial cable the PDU gives an alarm to the BTS The PDU thus also monitors the condition of the coaxial cable not just the MHU The PDU also has built in lightning protection The Bias T located on the coaxial cable is a passive device that physically injects the DC cu...
Страница 10: ...ure 4 900 Fullband MHU Dimensions Figure 5 1800 Narrow Band MHU Dimensions 21488 A 83 MILLIMETERS BTS ANT ClearGain 332 MILLIMETERS 248 MILLIMETERS 900 Dual Duplex 2 Port TMA BTS ANT ClearGain 18791 A 63 MILLIMETERS 260 MILLIMETERS 196 MILLIMETERS 1800 Dual Duplex 2 Port TMA ...
Страница 11: ...ground cable 2 Installing the Bias T mechanical attachment coaxial cables power cable 3 Installing the PDU mechanical attachment operation power and alarms 2 2 Installing the Masthead Unit U bolts are provided for mounting the MHU Figure 6 provides an exploded view The kit may be used for tube diameter 30 140 mm Figure 6 MHU Long Bolt Mounting Bracket Kit Components 16775 C ClearGain ANY ClearGain...
Страница 12: ...other end of the cable to a good ground site ground with a reliable joint GROUNDING and BONDING CONSIDERATIONS Grounding is very important in tower applications Shipped with each MHU is a 6 AWG 3 foot ground cable with single hole crimp lug connectors on both ends Installation hardware is provided to attach one end to the MHU Keep ground wire as short and direct no loops or knots as possible secur...
Страница 13: ... 1 Mechanical Attachment of PDU The PDU should be mounted in accordance with local code using appropriate hardware customer provided The PDU has two mounting holes on either side as shown in Figure 7 Below are guidelines for standard wall mount masonry wall mount and rack mount of the PDU 2 3 1 1 Standard Wall Mount When mounting the PDU on a wooden or metal surface it is recommended that it be in...
Страница 14: ...Figure 8 is available that will allow the PDU to be mounted on a19 inch rack If mounting the PDU on a rack refer to the installation drawing provided with the mounting bracket Figure 8 PDU Rack Mount Bracket Power Distribution Unit MHU DISCONNECT MHU 1 ALARM INPUT MHU 2 MHU 3 MHU 4 MHU 6 MHU 5 OK FAIL COM NO NC OK OK OK OK OK 16772 A 18223 A MOUNTING BRACKET PDU ...
Страница 15: ...onnect the ground cable under the grounding screw on the PDU front panel Connect the other end of the cable to the site grounding pole 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 ...
Страница 16: ...igure 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 DC INPUT 16773 A ALARM RELAY PDU ALARM LOGIC OUTPUTS COM COMMON NO NORMALLY OPEN NC NORMALLY CLOSED POWER DISTRIBUTION U...
Страница 17: ...mini coax cable to the PDU front panel SMB connector TMA1 6 whichever is being used 2 4 2 Additional Lightning Protection If operator chooses to install further lightning protection between the MHU and Bias T it must allow the DC voltage to pass through the lightening protector 3 TROUBLESHOOTING When something is wrong with the system the red alarm LED on the PDU is activated and the PDU alarm out...
Страница 18: ...at the PDU feeds 12VDC to the Bias T Do this measurement using a multimeter Voltage measurement DC If there is 11 13 VDC found from the connector there is something wrong with the Bias T MHU or cables 5 Shut the transmit power OFF from the BTS and disconnect the coaxial cable from the Antenna side of the Bias T Measure that the Bias T feeds 12VDC to the MHU 4 TROUBLESHOOTING 2 PORT CLEARGAIN DUAL ...
Страница 19: ...UMPER TEST POINT HARD LINE SHELTER ANTENNA JUMPER CHECK IF EXTERNAL JUMPERS OR SURGE PROTECTORS PRESENT IF A SURGE PROTECTOR IS ANYWHERE IN BETWEEN THE BIAS T AND THE TMA IT MUST BE ABLE TO PASS DC COMMON FAILURE POINTS ARE THE ANTENNA AND FEEDLINE JUMPERS CONNECTIONS ORIENT THE TMA SO THE RF CONNECTORS POINT TOWARDS THE GROUND ...
Страница 20: ...2 Multimeter checks a Measure voltage on the Bias T _______ VDC Normal is 13VDC b Measure resistance of the feedline _______ Ohms Normal is High or Very high Ω 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 Typical RL Sweep 4 Re connect Bias T with a T adapter Verify voltage on the T adapter _______VDC Normal...
Страница 21: ...ce 4 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 TMA If high resistance check to see if TMA is installed or for a discontinuity up to the TMA Normal in band RL should be greater than 14dB If less than 14dB check protector feedline jumpers and antenna Mark receive and transm...
Страница 22: ...al Dynamic Range Input at 1 dB compression 3 0 dB IIP3 15 dBm Insertion Loss of TX Path TX to Antenna 0 2 dB FILTER Passband Return Loss TX Band 20 dB RX Band 20 dB Intermodulation 120 dBm POWER HANDLING Maximum Input Power at Each BTS Input RMS Power TX 200 W Peak Power TX 1 44 kW Duration 20 microseconds Period Between Peaks 550 microseconds Fault Management Bypass POWER Operational Voltage 7 to...
Страница 23: ...35 MHz Passband RX Gain 12 dB Noise Figure 1 4 dB typical Dynamic Range Input at 1 dB compression 3 0 dB IIP3 15 dBm Insertion Loss of TX Path TX to Antenna 0 2 dB FILTER Passband Return Loss TX Band 18 dB RX Band 18 dB Intermodulation 115dBm POWER Operational Voltage 7 to 15 VDC Operational Current 140 mA 10 mA Alarm Current Level 350 10 mA PHYSICAL Dimensions HxWxD 332 x 250 x 83 mm Weight 6 6 k...
Страница 24: ...B UMTS Rx and Tx 0 2 dB 900 Rx and Tx 0 1 dB Intermodulation at RX Band 120 dBm Power Handling Capability 500W RMS 10 kW peak Return Loss 20dB LNA WITH FILTER Gain 12 dB fixed Passband ripple 0 5 dB Noise Figure 1 5 dB IIP3 13 dBm Bypass Loss Typical 2 0dB RF relay connection PHYSICAL Dimensions HxWxD 196 x 260 x 63 mm Weight 5 kg Color Silver CONNECTORS Antenna Connector 7 16 DIN receptor BTS Con...
Страница 25: ...xtension 73476 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 Italy 0800 782374 PRODUCT INFORMATION AND TECHNICAL 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 fo...
