Installation and Operating Manual
User Manual
040003A010 Rev A Page 3 of 25
1 GENERAL DESCRIPTION
1.1 INTRODUCTION
This manual contains installation and operating information for the Crescend High Power 406-420
MHz Power Amplifier. The manual is organized into multiple sections as follows:
1 GENERAL DESCRIPTION .................................................................................................................... 3
1.1 INTRODUCTION .................................................................................................................. 3
1.2 PRODUCT DESCRIPTION ................................................................................................... 3
2 INSTALLATION ..................................................................................................................................... 5
2.1 INSTALLATION INSTRUCTIONS ......................................................................................... 5
2.2 INITIAL STARTUP ................................................................................................................ 6
3 OPERATING INFORMATION ............................................................................................................... 7
3.1 INTRODUCTION .................................................................................................................. 7
3.2 STATUS INDICATORS AND MONITOR CONNECTOR ...................................................... 7
3.3 DETAILED STATUS INDICATOR AND MONITOR CONNECTOR INFORMATION ............ 9
3.4 DIGITAL COMMUNICATION INTERFACE (RS232) ...........................................................13
3.5 POWER SET CONTROL .....................................................................................................17
4 TROUBLESHOOTING ..........................................................................................................................18
4.1 INTRODUCTION .................................................................................................................18
4.2 TROUBLESHOOTING .........................................................................................................18
4.3 RETURN FOR SERVICE PROCEDURES...........................................................................20
4.3.1 OBTAINING RMA ........................................................................................................20
4.3.2 REPACKAGING FOR SHIPMENT ..............................................................................20
5 MAINTENANCE ...................................................................................................................................21
5.1 INTRODUCTION .................................................................................................................21
5.2 PERIODIC MAINTENANCE .................................................................................................21
5.3 CLEANING AIR INLETS/OUTLETS .....................................................................................21
6 RF ENERGY EXPOSURE ....................................................................................................................22
6.1 RF ENERGY EXPOSURE AWARENESS, CONTROL INFORMATION, AND OPERATIONAL
INSTRUCTIONS FOR COMPLIANCE WITH FCC RF EXPOSURE LIMITS ........................................22
6.2 FEDERAL COMMUNICATION COMMISSION REGULATIONS .........................................22
6.3 RF EXPOSURE COMPLIANCE, CONTROL GUIDELINES AND OPERATING
INSTRUCTIONS ...................................................................................................................................22
1.2 PRODUCT DESCRIPTION
The Crescend Technologies High Power UHF RF power amplifier is designed for paging and other
applications that use a single carrier constant envelope waveform. The amplifier is designed to be
powered from either an external +48 VDC source or an optional internal AC power supply. Model