RF Power Amplifiers Digital Multi-Carrier Amplifier Model : DMAU-U Operation Instruction Date: June 17, 2005 Ver. 1.
RF Power Amplifiers Introduction This document presents a description of the Andrew Digital Multi-carrier Amplifier Unit (DMAU). The DMAU is a 60 Watt (RF), high efficiency base-station amplifier. It accepts as input a digital representation of multiple CDMA carriers and produces a multi-carrier RF signal at its output. The amplifier transmits RF power over a 20MHz instantaneous bandwidth within the US PCS frequency band of 1930MHz to 1990MHz.
RF Power Amplifiers 6) Tri-Color LED – Single LED that illuminates in green, amber, or red depending on operating condition. This interface is located on the front panel. DMAU Circuit Board/Module Functional Descriptions DMAU contains three individual printed circuit boards and two sub-circuit modules. The main transmit path flows through all three circuit boards. A description of these boards and their functions follows.
RF Power Amplifiers DMAU Photographs Tx Enable/Disable Switch LED indicator Debug Port DMAU Front View Andrew Corporation – Power Amplifier Group Propriety – Use pursuant to Company Instruction Page 4 of 4
RF Power Amplifiers Digital Data Input (~600Mbps, LVDS) DC Input (+26V ) and Return RF Output 60W DMAU Cover Side View INSTALLATION AND OPERATION SET-UP The DMAU is easy to operate and use, requiring no special cabling since the main input/output and + 26 VDC @ 15 A power connections are all blind mated into a backplane. An inrush limiting circuit on the power supply section even allows for ‘hot’ insertion into the backplane.
RF Power Amplifiers FCC Statements: FCC ID: S8L-100154DMAU-U This device complies with Part 2, 15 & 24 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Warning Changes or modifications not expressly approved by the manufacturer could void the user’s authority to operate the equipment.
