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Table of Contents
Summary of Contents for Grayson Wireless GWMT0920
- Page 1 GWMT TRANSMITTER USER’S MANUAL Manual Part No. MN002402 Rev. B Issued 12/2001 Manual Assembly Instructions Print this manual (double sided pages) on 20 lb. bond paper Punch holes in printed pages for use in a three ring binder Discard this sheet...
- Page 3 GWMT TRANSMITTER USER’S MANUAL Manual Part No. MN002402 Rev. B Issued 12/2001...
- Page 4 Allen Telecom software may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, except as expressly provided in the license or with the prior written permission of Allen Telecom. Grayson Wireless 140 Vista Centre Drive Forest, VA 24551 www.grayson.com...
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Page 5: Table Of Contents
Warranty ______________________________________________________________________ v In Case of Trouble _______________________________________________________________ v Chapter 1: Introduction ______________________________________ 1 About This Manual___________________________________________________________________ 1 Contacting Grayson Wireless __________________________________________________________ 1 Corporate Headquarters __________________________________________________________ 1 Technical Support _______________________________________________________________ 1 Sales _________________________________________________________________________ 2 About the Measurement System Product _________________________________________________ 2... - Page 6 Chapter 5: Performance Specifications ________________________ 13 General __________________________________________________________________________ 13 Outside Dimensions and Weight ___________________________________________________ 13 Input Power ___________________________________________________________________ 13 Device Control LCD Display and Keyboard ___________________________________________ 13 RF Connection _________________________________________________________________ 13 Temperature Range _____________________________________________________________ 13 Over Temperature Protection (No Damage) __________________________________________ 13 RF General _______________________________________________________________________ 13 Signal Type ___________________________________________________________________ 13 Output Power Maximum__________________________________________________________ 13...
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Page 7: Preface
EXEMPLARY DAMAGES. DISCLAIMER This manual has been developed by Grayson Wireless, a division of Allen Telecom Inc. and is intended for the use of its customers and customer support personnel. The information in this manual is subject to change without notice. While every effort has been made to eliminate errors, Grayson Wireless disclaims liability for any difficulties arising from the interpretation of the information contained herein. -
Page 9: Chapter 1: Introduction
Also included in this manual are procedures for unpacking, inspecting, and setting up the product for operation. Contacting Grayson Wireless Grayson Wireless is a worldwide leader in test and measurement products for the wireless industry. Please contact us for your wireless test and measurement requirements and questions. Corporate Headquarters Address: Grayson Wireless, Inc. -
Page 10: Sales
Sales The Grayson Wireless team of sales engineers can be reached Monday through Friday from 8:00 AM to 5:00 PM Eastern Standard Time. Please contact your sales representative for information about the complete line of Grayson Wireless measurement products. United States Telephone: (434) 386 –... -
Page 11: Rf Exposure
RF Exposure IMPORTANT NOTE: To comply with FCC RF exposure compliance requirements, the following antenna installation and device operating configurations must be satisfied: During normal use the antenna must be fixed-mounted on outdoor permanent structures with a separation distance of at least 6 meters from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. -
Page 13: Chapter 2: Preparation For Use
Chapter 2: Preparation for Use Introduction This chapter outlines precautions and preparations necessary prior to use of the measurement system. Unpacking and inspection of the individual pieces, plus the requirements placed on the external power supply are also covered. Precautions Shock Hazard When replacing the AC fuse on the front panel, be sure to unplug the line cord and replace it with a fuse of the correct rating and type. -
Page 15: Chapter 3: Interface Description
Chapter 3: Interface Description Introduction This chapter covers the front panel features and external interface ports. The first section gives a pictorial view of the front panel and a detailed description of the keypad and resultant indicators. The second section gives a detailed description of the side panel connectors and fuse holder. Front Panel Features Keypad Operation Mode Keys... -
Page 16: Display Lcd
Side Panel Features The Power Connector (AC or DC Power Cable) and the RF Connector (Type N Female) are located on the side panel. The DB-9 connector is used by Grayson Wireless for internal test purposes and has no user function. -
Page 17: Chapter 4: Installation And Operation
Chapter 4: Installation and Operation This chapter covers the installation, set up and operational features of the GWMT transmitter. Installation Procedure Remove the transmitter from the shipping container and install it in a location with an ambient temperature range between -20 and 55°C. Operation Power Source Connect either the AC power cord to a source of 110/220 Vac 50/60 Hz or the DC power cable to... -
Page 18: Amplitude Control
If entering the value directly, enter the value using the numeric keys, including the decimal point and fraction (KHz), followed by the Enter key. The display will automatically adjust your entry to the nearest valid frequency setting that is less than or equal to the value entered. If scrolling, press the up or down arrow keys repeatedly until the desired value is obtained. -
Page 19: Display Control
continuously updated with the status of the transmitter; if the transmitter turns off due to an error condition, this will be displayed on line 4. Display Control There are two types of control for the LCD: Backlight ON/OFF, and Contrast Adjust. The Backlight key toggles the LCD backlight on and off. - Page 21 Chapter 5: Performance Specifications General Outside Dimensions and Weight Height 6.54 inches Width 16.1 inches Depth 14.5 inches Weight < 30 lbs Input Power 110/220 VAC 50-60 Hz (<300 W) or 11-15 VDC (20 A) Device Control LCD Display and Keyboard Frequency Select Output Power Select, 0.1dB Increments Transmit Key Select...
- Page 22 Output Power Flatness over Temperature and Frequency +1 dB (20 to 43 dBm Output, 0 to +40 Output Impedance 50 ohms Output VSWR < 1.5:1 Frequency Stability 1 PPM RF Load Protection Key On Into Open/Short No Damage Output Harmonics and Spurious Emissions <-75 dBc @ 20 Watts output typical GWMT 0920 Frequency Range...
- Page 23 GWMT 1920 Frequency Range 1850 - 1990 MHz Frequency Tuning Step Minimum 30 / 50 kHz GWMT 2120 Frequency Range 2110 - 2170 MHz Frequency Tuning Step Minimum 50 kHz GWMT Transmitter Manual Chapter 5: Performance Specifications...
- Page 25 Chapter 6: Brief Technical Description Introduction This chapter includes information on how the transmitter hardware functions. This information is presented so that the user may have a better understanding of how the unit works. Note: There are no field repairable assemblies in the transmitter. Overview The GWMT is a self-contained transmitter for the specified frequency band.
- Page 26 The power amplifier is protected from high VSWR loads by an isolator at its output. The PA also provides a temperature sense signal to the controller, which disables transmission if temperature is excessive. The transmitter is designed to operate from a nominal 12 VDC source. A DC-DC converter is included to convert the 12 V input to 24 V required for the PA.
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