QKGRDX-U2Mobile Transmitter

Digital XTS 3000 Portable Radios Basic Service Manual Motorola8000 West Sunrise BoulevardFort Lauderdale, Florida 33322 68P81083C85-O TM TM *6881083C85* Foreword This manual covers all models of ASTRO™ Digital XTS 3000™ portable radios, unless otherwise specified. It includes all the information necessary to maintain peak product performance and maximum working-time using the pass/fail service approach. This basic level of service is typical of some local service centers, self-maintained customers, and some distributors. Included in this manual are: radio specifications for the 800MHz frequency band; a general description of ASTRO Digital XTS 3000 models; recommended test equipment, service aids, and tools; radio alignment procedures; fundamental disassembly/ reassembly procedures; and general maintenance recommendations. For details on the operation of the radio, or board- or component-level troubleshooting, refer to the applicable manuals available separately. To help you with your selection, a list is provided in this manual, titled “Related Publications.” Safety Information In 1991 the Institute of Electrical and Electronics Engineers (IEEE), and in 1992 the American National Standards Institute (ANSI), updated the 1982 ANSI Standard for safety levels with respect to human exposure to RF energy. Over 120 scientists, engineers, and physicians from universities, government health agencies, and industry, after reviewing the available body of research, developed this updated Standard. In March, 1993, the Federal Communications Commission (FCC) proposed the adoption of this updated Standard. Motorola subscribes to the same safety standard for the use of its products. Proper operation of this radio will result in user exposure substantially below FCC recommended limits: • DO NOT hold the radio with the antenna very close to, or touching, exposed parts of the body, especially the face, ears, or eyes, while transmitting. Hold the radio in a vertical position with the microphone two to three inches away from the lips. • DO NOT hold the transmit switch (PTT) on when not actually desiring to transmit. • DO NOT allow children to play with any radio equipment containing a transmitter. • DO NOT operate this equipment near electrical blasting caps or in an explosive atmosphere. Under certain conditions, radios can interfere with blasting operations. When you are in the vicinity of construction work, look for, and observe, signs cautioning against radio transmissions. If radio transmission is prohibited, you must not transmit until out of the area. Furthermore, you must turn off your radio to prevent any accidental transmission. • DO NOT replace or charge batteries in a hazardous atmosphere. Contact sparking may occur while installing or removing batteries and cause an explosion. • Turn the radio off when removing or installing a battery. Anyone intending to use a radio in a hazardous area is advised to become familiar with the subject of intrinsic safety and with Section 70 of the National Fire Code, which is commonly referred to as Article 500 of the National Electric Code. Use of anything but factory supplied components may affect the approval and safety of the radio. Likewise, it is advised that servicing should be performed only by qualified personnel who adhere to the following Factory Mutual (FM) required warning: Modification of FM approved intrinsically safe radios will negate Factory Mutual Research Corporation (FMRC) approval. Airbag Warning Statement VEHICLES EQUIPPED WITH AIR BAGS An air bag inflates with great force. DO NOT place objects, including communication equipment, in the area over the air bag or in the air bag deployment area. If the communication equipment is improperly installed and the air bag inflates, this could cause serious injury. • Installation of vehicle communication equipment should be performed by a professional installer/technician qualified in the requirements for such installations. An air bag’s size, shape and deployment area can vary by vehicle make, model and front compartment configuration (for example, bench seat vs. bucket seats). • Contact the vehicle manufacturer’s corporate headquarters, if necessary, for specific air bag information for the vehicle make, model and front compartment configuration involved in your communication equipment installation. Manual Revisions Changes which occur after this manual is printed are described in “FMRs.” These FMRs provide complete information on changes including pertinent parts listing data. ! W A R N I N G ! ! W A R N I N G ! i Table of Contents Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . inside front cover List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii Portable Radio Model Numbering System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii SPECIFICATIONS FOR 800MHz RADIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v 1 - Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Notations Used in This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . …

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OPERATION The RDX series RF modules are designed for integration into various radio systems products. The module has no user controls as such and is designed for use in applications such as low power control stations and mobile relay /mobile repeater stations, where other 3rd party circuitry will provide for user interface and controls. The modules are based on Motorola ASTRO XTS3000 series poratble radios. The modules interface connector provides standard input/output audio interfaces, logic indication of squelch conditions, and logic level selection of the pre-programmed channels/personality modes, in addition to serial bus control. Various parameters including RF Power is programmable via a Motorola XTS3000 Radios Service Software (RSS) from 1-3Watts on 800MHz models, 1-4watts on UHF modules and 1-5 watts on VHF models. NOTE: RF Power output MUST be set so as to not exceed the permissable FCC regulatory level prior to the units deployment. The module is designed to connect to a unity gain 1/4 wave antenna. Other antennas may only be used providing they ensure the installation continues to comply with FCC licensing requirements. DC POWER: The RDX series modules are designed for operation from a nominal 7.5VDC source. The unit will operate within specification over a voltage range from 6.0 to 8.4Volts DC. Current consumption for the module is 120mA on standby. Installation: The RDX modules must be installed using best RF engineering practice. The units are shielded to minimize RF interference from other co-located transceivers but attention should be made to frequency planning to ensureunwanted interfernce, intermodulation or Receiver desensitization occurs. There small compact size, low current consumption make them ideal for incorporation into emergency battery powered portable repeaters, temporary remote rf Control station and other relation mobile applications. Product of New Zealand /Motorola XTS3000 radios Made in USA ASTRO & XTS3000 are trademarks of Motorola Inc. RDX Series RF Module User Guide SECURE / ENCRYPTION OPERATION ( Optional) RDX RF modules may optionally fitted with Motorola ASTRO XTS3000 encryption modules. Encrypted mode should be slaved to the 16 programmable modes. Only one encryption key is available. Keys can be entered using a standard Motorola Key Loader and an appriate interface cable . General Safety. NEVER hold the antenna when theRF Module is “IN USE”. Keep all parts of the body at least 8inches ( 20cm) from Antenna whip. ELECTROMAGNETIC INTERFERENCE Most electronic devices are susceptible to electromagnetic interference (EMI). To avoid electromagnetic interference and/or compatibility conflicts, turn off the X-Ponder anywhere posted notices instruct you to do so. The Health Industry Manufacturers Association recommends that a minimum separation of 6 inches (15 centimeters) be maintained between a wireless radio and a pacemaker. Turn the unit OFF immediately if you feel that interference is taking place. Digital radios may interfere with some types of hearing aids. If such interference occurs, you may want to consult ithe aids manufacturer. EXPLOSIVE ATMOSPHERES Do not operate the X-Ponder in any area with a potentially explosive atmosphere. Areas such as fueling areas, chemical handling facilities, or areas where the air contains chemicals or particles, such as grain dust or metal powders. NEVER charge,remove or install batteries as sparks in such a potentially explosive atmosphere can cause an explosion or fire resulting in injury or death. To avoid possible interference with blasting operations, do not operate the module near electrical blasting caps, in a blasting area, or in areas posted: “Turn off two-way radio.” Always obey all signs and instructions. ELECTROMAGNETIC ENERGY (EME) The Motorola XTS3000 radios inside are designed to comply with the following international standards and guidelines regarding exposure of humans to electromagnetic energy (EME): • USA Federal Communications Commission, Regulations; 47 CFR part 2 sub-part J • American National Standards Institute (ANSI) / Institute of Electrical and Electronic Engineers (IEEE) C95. 1-1992 • Institute of Electrical and Electronic Engineers (IEEE) C95.1-199 Edition • USA National Council on Radiation Protection and Measurements, Report 86, 1986 • Ministry of Health (Canada) Safety Code 6. Limits of Human Exposure to Electromagnetic Fields in the Frequency Range from 3 kHz to 300 GHz, 1999 • International Commission on Non-Ionizing Radiation Protection (ICNIRP) 1998 Wireless Pacific Wireless Pacific

Digital XTS 3000 Portable Radios Basic Service Manual Motorola8000 West Sunrise BoulevardFort Lauderdale, Florida 33322 68P81083C85-O TM TM *6881083C85* Foreword This manual covers all models of ASTRO™ Digital XTS 3000™ portable radios, unless otherwise specified. It includes all the information necessary to maintain peak product performance and maximum working-time using the pass/fail service approach. This basic level of service is typical of some local service centers, self-maintained customers, and some distributors. Included in this manual are: radio specifications for the 800MHz frequency band; a general description of ASTRO Digital XTS 3000 models; recommended test equipment, service aids, and tools; radio alignment procedures; fundamental disassembly/ reassembly procedures; and general maintenance recommendations. For details on the operation of the radio, or board- or component-level troubleshooting, refer to the applicable manuals available separately. To help you with your selection, a list is provided in this manual, titled “Related Publications.” Safety Information In 1991 the Institute of Electrical and Electronics Engineers (IEEE), and in 1992 the American National Standards Institute (ANSI), updated the 1982 ANSI Standard for safety levels with respect to human exposure to RF energy. Over 120 scientists, engineers, and physicians from universities, government health agencies, and industry, after reviewing the available body of research, developed this updated Standard. In March, 1993, the Federal Communications Commission (FCC) proposed the adoption of this updated Standard. Motorola subscribes to the same safety standard for the use of its products. Proper operation of this radio will result in user exposure substantially below FCC recommended limits: • DO NOT hold the radio with the antenna very close to, or touching, exposed parts of the body, especially the face, ears, or eyes, while transmitting. Hold the radio in a vertical position with the microphone two to three inches away from the lips. • DO NOT hold the transmit switch (PTT) on when not actually desiring to transmit. • DO NOT allow children to play with any radio equipment containing a transmitter. • DO NOT operate this equipment near electrical blasting caps or in an explosive atmosphere. Under certain conditions, radios can interfere with blasting operations. When you are in the vicinity of construction work, look for, and observe, signs cautioning against radio transmissions. If radio transmission is prohibited, you must not transmit until out of the area. Furthermore, you must turn off your radio to prevent any accidental transmission. • DO NOT replace or charge batteries in a hazardous atmosphere. Contact sparking may occur while installing or removing batteries and cause an explosion. • Turn the radio off when removing or installing a battery. Anyone intending to use a radio in a hazardous area is advised to become familiar with the subject of intrinsic safety and with Section 70 of the National Fire Code, which is commonly referred to as Article 500 of the National Electric Code. Use of anything but factory supplied components may affect the approval and safety of the radio. Likewise, it is advised that servicing should be performed only by qualified personnel who adhere to the following Factory Mutual (FM) required warning: Modification of FM approved intrinsically safe radios will negate Factory Mutual Research Corporation (FMRC) approval. Airbag Warning Statement VEHICLES EQUIPPED WITH AIR BAGS An air bag inflates with great force. DO NOT place objects, including communication equipment, in the area over the air bag or in the air bag deployment area. If the communication equipment is improperly installed and the air bag inflates, this could cause serious injury. • Installation of vehicle communication equipment should be performed by a professional installer/technician qualified in the requirements for such installations. An air bag’s size, shape and deployment area can vary by vehicle make, model and front compartment configuration (for example, bench seat vs. bucket seats). • Contact the vehicle manufacturer’s corporate headquarters, if necessary, for specific air bag information for the vehicle make, model and front compartment configuration involved in your communication equipment installation. Manual Revisions Changes which occur after this manual is printed are described in “FMRs.” These FMRs provide complete information on changes including pertinent parts listing data. ! W A R N I N G ! ! W A R N I N G ! i Table of Contents Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . inside front cover List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii Portable Radio Model Numbering System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii SPECIFICATIONS FOR 800MHz RADIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v 1 - Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Notations Used in This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . …

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™ Digital XTS 3000™ and XTS 3000 R™ Portable Radios Detailed Service Manual Foreword The information contained in this manual relates to all ASTRO Digital XTS 3000™ portable radios, unless otherwise specified. This manual provides sufficient information to enable service shop personnel to troubleshoot and repair an ASTRO Digital XTS 3000 portable radio to the component level. Safety Information Before operating an ASTRO Digital XTS 3000 radio, please read the “Safety” section in the front of this manual. Manual Revisions Changes which occur after this manual is printed are described in “FMRs.” These FMRs provide complete information on changes, including pertinent parts list data. Computer Software Copyrights The Motorola products described in this manual may include copyrighted Motorola computer programs stored in semiconductor memories or other media. Laws in the United States and other countries pre- serve for Motorola certain exclusive rights for copyrighted computer programs, including the exclusive right to copy or reproduce in any form the copyrighted computer program. Accordingly, any copy- righted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola. Fur- thermore, the purchase of Motorola products shall not be deemed to grant either directly or by implica- tion, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive royalty free license to use that arises by operation of law in the sale of a product. i Table of Contents Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . inside front cover List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv List of Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv List of Schematics and Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi Portable Radio Model Numbering System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii ASTRO Digital XTS 3000 Model Chart (“A” Models). . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv ASTRO Digital XTS 3000 Model Chart (”B” Models). . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv ASTRO Digital XTS 3000 R (Ruggedized) Model Chart. . . . . . . . . . . . . . . . . . . . . . . . . . xvi ASTRO Digital XTS 3000 R (Ruggedized) Yellow Model Chart . . . . . . . . . . . . . . . . . . xvii Model History Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxi 1 - Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1 Notations Used in This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2 2 - General Overview of an ASTRO Digital XTS 3000 Radio . . . . . . . . . . . . . . . . . . . . . 2-1 Analog Mode of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2 ASTRO Mode (Digital Mode) of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2 Transceiver Board Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3 Controller Board Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3 Vocoder Board Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5 Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6 3 - Radio Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Introduction to This Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1 B+ Routing for VHF/UHF Transceiver Boards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1 B+ Routing for 800MHz Transceiver Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3 B+ and +5V Routing for Controller and Vocoder Boards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4 4 - VHF/UHF Transceiver Board Detailed Theory of Operation . . . . . . . . . . . . . . . . . . 4-1 Introduction to This Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 Frequency Generation Unit (FGU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 Antenna Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3 ® 1997, 1998, 2001 by Motorola Inc., Radio Products Group…

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6-1 Vocoder and Controller Boards Detailed Theory of Operation 6 Introduction to This Section This section of the manual provides a detailed circuit description of the ASTRO Digital XTS 3000 vocoder and controller boards. When reading the theory of operation, refer to your appropriate schematic and component location diagrams located in the back section of this manual. This detailed theory of operation will help isolate the problem to a particular component. General The controller board is the central interface among the various subsystems of the radio. It is very similar to the digital logic portion of the controllers on many existing Motorola radios. Its main task is to interpret user input, provide user feedback, and schedule events in the radio operation, and includes programming ICs, steering the activities of the DSP, and driving the display. The vocoder board performs the functions which were previously performed by analog circuitry. This includes all tone signaling, trunking signalling, conventional analog voice, etc. All analog signal processing is done digitally utilizing a DSP56001. In addition, the vocoder board provides a digital voice-plus-data capability, utilizing VSELP or IMBE voice compression algorithms. Vocoder is a general term used to refer to these DSP based systems and is short for voice encoder. The vocoder and controller boards are connected through a 50-pin compression connector; they provide interconnection among the microcontrol unit (MCU), the DSP, and (on secure-equipped radios) the encryption board. Vocoder Board Refer to Figure 6 and the appropriate schematic diagram. The vocoder board consists of a digital signal processor (DSP — U405), 32k x24 static-RAM (SRAMs — U401, U402, and U403), a 256kB FLASH ROM (U404), and an ABACUS/DSP support IC (ADSIC — U406). The FLASH ROM (U404) contains the program code executed by the DSP. As with the FLASH ROM used on the controller board, the FLASH ROM is reprogrammable, so new features and algorithms can be updated in the field as they become available. Depending on the mode and operation of the DSP, corresponding program code is moved from the FLASH ROM into the faster SRAM, where it is executed at full bus rate. 6-2 The ADSIC (U406) is basically a support IC for the DSP. It provides, among other things, the interface from the digital world of the DSP to the analog world. The ADSIC also provides interrupt control for the DSP processing algorithms and some memory management. The configuration programming of the ADSIC is performed by the MCU. However, some components of the ADSIC are controlled through a parallel memory mapped register bank by the DSP. In the receive mode, The ADSIC (U406) acts as an interface with the ABACUS IC, which can provide IF data samples directly to the DSP for processing. Or, the IF data can be filtered and discriminated by the ADSIC and data provided to the DSP as raw discriminator sample data. The latter mode, with the ADSIC performing the IF filtering and discrimination, is the typical mode of operation. SSI SERIAL EXTALMODBMODA HC11/DSP Interface D0-D23 BUS CONTROL A0-A15 U405 DSP56001 SCI SERIAL Encryption Interface To Secure Board To Controller Board Host Port System Clock Gata Array Logic ABACUS Rx Interface Tx D/A MAI SDO General Purpose I/O Speaker D/A Microphone A/D Serial Config. U406 ADSIC ABACUS Interface To/From Controller Board Modulation Out U403 32Kx8 SRAM U404 256Kx8 FLASH U402 32Kx8 SRAM U401 32Kx8 SRAM HC11 SPI Bus MAEPF-25999-O Figure 6 Vocoder Board 6-3 The DSP sends the processed signal back to the ADSIC for D/A conversion. The result is then sent to the audio PA for the speaker output. In the transmit mode, the ADSIC (U406) provides a serial digital-to- analog (D/A) converter. The data generated by the DSP is filtered and reconstructed as an analog signal, and sent to the VCO as a modulation signal. Both the transmit and receive data paths between the DSP and ADSIC are through the DSP SSI port. The amplified microphone signal is provided to the ADSIC, which incorporates an analog-to-digital (A/D) converter to translate the analog waveform to a series of data. The data is available to the DSP through the ADSIC parallel registers. In the converse way, the DSP writes speaker data samples to a D/A in the ADSIC, which provides an analog speaker audio signal to the audio PA. Controller Board Refer to Figure 7 and the appropriate schematic diagram The controller board consists almost entirely of digital logic comprising a microcontrol unit (MCU — U701), a custom support logic IC (SLIC — U702), and memory consisting of: SRAM (U705), EEPROM (U706), and FLASH memory (U727). The board also contains the audio PA (U718) and its associated circuitry. The MCU’s (U701) memory system is composed of a 32k x 8 SRAM (U705), a 32k x 8 EEPROM (U706), and 1M x 8 FLASH ROM (U727). The MCU also contains 1024 bytes of internal SRAM and 512 bytes of internal EEPROM. The EEPROM memory is used to store customer U727 1Mx8 FLASH U705 32Kx8 SRAM U706 32Kx8 EEPROM Address/Data/ Control Resets Clocks Controls Chip Selects/ Bank Control General Purpose I/O RS232 (to vocoder) U702 SLIC IV SPI SCI A/D Address/Data/ Control Clocks General Purpose I/O 512 Bytes EEPROM 1024 Bytes SRAM U701 MC68HC11F1 HC11/DSP Interface Universal Connector Keypad, PTT, Freq. Knob, Option Selects Universal Connector Transceiver/Display MAEPF-25998-O To ADSIC (vocoder) Volume Pot, Toggle and Secure Switches, and Buttons (RATT, Monitor, Emergency) Figure 7 Controller Board 6-4 specific information and radio personality features. The FLASH ROM contains the programs which the HC11F1 executes. The FLASH ROM allows the controller firmware to be reprogrammed for future software upgrades or feature enhancements. The SRAM is used for scratchpad memory during program execution. The SLIC (U702) performs many functions as a companion IC for the MCU. Among these are expanded input/output (I/O), memory decoding and management, and interrupt…

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13-1 Interconnect Diagram, Schematics with Parts Lists, Circuit Board Details,Exploded Views with Parts Lists 13 13-2 Radio Interconnect Block Diagram ANTENNA SWITCH UNIVERSAL CONNECTOR EXTERNAL ANTENNA RX/TX SWITCH RX FIRST PRESELECTOR RF AMP SECOND PRESELECTOR MIXER IF AMP INJECTION FILTER VCO/ BUFFER 2-POLE CRYSTAL FILTER 2-POLE CRYSTAL FILTER DIGITAL BACKEND CIRCUIT MODULE RX 1ST IF RF POWER AMP TX TX DIRECTIONAL COUPLER/ DETECTOR TX TX CONTROL CIRCUIT MODULE SECOND LOCAL OSCILLATOR SYNTHESIZER/ PRESCALER REFERENCE OSCILLATOR 16.8MHz D/A CIRCUIT MODULE DC CONTROL 2.1MHz TRANSCEIVER BOARD VCO FEEDBACK PROGRAMMABLE BUS CONTROL DSP SUPPORT CIRCUIT MODULE DIGITAL SIGNAL PROCESSOR (DSP) RAM ROM ENCRYPTION BOARD (OPTIONAL) MICROCONTROL UNIT (MCU) AND SUPPORT LOGIC IC (SLIC) RAM ROM EEPROM AUDIO PA VOCODER BOARD CONTROLLER BOARD MAEPF-26012-O CONTROLS/UNIVERSAL FLEX ASSEMBLY LED’s, ON/OFF VOLUME, FREQUENCY KNOBS, TOGGLE SWITCH, PTT, PROGRAMMABLE SWITCHES AND BUTTONS, SPEAKER, AND MICROPHONE CONTROL 50-PIN COMPRESSION CONNECTOR DISPLAY FLEX KEYPAD FLEX UNIVERSAL CONNECTOR P107P301 J101 DISPLAY KEYPAD TX RX 16.8MHz DC CONTROL (VHF AND UHF ONLY) DC CONTROL (VHF AND UHF ONLY) VCO CONTROL 20-PIN COMPRESSION CONNECTOR P201 J601 J401 P401 J1 13-3 NLD8898B/C/D VHF RF Board Schematic Diagram, Sheet 1 of 3 0.1uF 0.1uF 0.1uF BAT_STATUS BAT_STATUS GROUNDGROUND GROUND GROUND GROUND SPI_CLOCK SPI_DATA SPI_DATA RESET…

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