Motorola GM950 Spécifications

Band Specific Information 5-i Chapter 5 Band Specific Information Table of Contents Table of Contents Chapter Page 5A UHF (403-470MHz) ...

Technical Specification5A.1-4 Model Chart and Test Specifications 3.3 Receiver3.4 Self-Quieting Frequencies Self-quieting frequencies are frequencies

Radio Tuning Procedure 5A.2-i Chapter 5A.2 Radio Tuning Procedure Table of Contents Table of Contents Paragraph Page 1.0 UHF (403-470MHz) Tuning Proc

Table of Contents5A.2-ii Radio Tuning Procedure

UHF (403-470MHz) Tuning ProcedureRadio Tuning Procedure 5A.2-1 1.0 UHF (403-470MHz) Tuning Procedure 1.1 General The recommended hardware platform is

UHF (403-470MHz) Tuning Procedure5A.2-2 Radio Tuning Procedure The Service windows introduce the concept of the “Softpot”, an analog SOFTware control

UHF (403-470MHz) Tuning ProcedureRadio Tuning Procedure 5A.2-3 1.2 PA Bias Voltage Adjustment of the PA Bias is critical for proper radio operation.

UHF (403-470MHz) Tuning Procedure5A.2-4 Radio Tuning Procedure 1.4 Transmitter Power The radio has two power level settings, a high power level setti

UHF (403-470MHz) Tuning ProcedureRadio Tuning Procedure 5A.2-51.6 Front-End FilterAlignment of the front-end pre-selector is normally not required on

UHF (403-470MHz) Tuning Procedure5A.2-6 Radio Tuning Procedure1.7 Rated VolumeThe rated volume softpot sets the maximum volume at normal test modulati

UHF (403-470MHz) Tuning ProcedureRadio Tuning Procedure 5A.2-71.9 Transmit Modulation Balance (Compensation)Compensation alignment balances the modula

Table of Contents5-ii Band Specific Information

UHF (403-470MHz) Tuning Procedure5A.2-8 Radio Tuning Procedure7. Click the Toggle PTT button to dekey the radio.8. Repeat steps 4 - 7 for the remainin

UHF (403-470MHz) Tuning ProcedureRadio Tuning Procedure 5A.2-91.12 DTMF Transmit DeviationThe DTMF Deviation Softpot is used to tune the DTMF deviatio

UHF (403-470MHz) Tuning Procedure5A.2-10 Radio Tuning Procedure

Theory of Operation 5A.3-iChapter 5A.3Theory of OperationTable of ContentsTable of ContentsParagraph Page1.0 Overview...

Table of Contents5A.3-ii Theory of OperationParagraph Page4.4 TX Secure Audio (optional) ...

OverviewTheory of Operation 5A.3-11.0 OverviewThis section provides a detailed theory of operation for the radio and its components. The main radio is

Open Controller5A.3-2 Theory of OperationRegulator U0601 is used to generate the 9.3 volts required by some audio circuits, the RF circuitry and power

Open ControllerTheory of Operation 5A.3-32.4 EmergencyThe emergency switch (J0400-9), when engaged, grounds the base of Q0441 and pulls the line EMERG

Open Controller5A.3-4 Theory of OperationTo start SBEP communication this voltage must be above 6V. This condition generates a µP interrupt via VR0102

Open ControllerTheory of Operation 5A.3-5When the µP needs to program any of these IC’s it brings the chip select line for that IC to a logic 0 and th

403-470MHz Specific Information 5A-i Chapter 5A 403-470MHz Specific Information Table of Contents Table of Contents Chapter 5A.1 Model Chart and Test

Open Controller5A.3-6 Theory of Operation2.11 General Purpose Input/OutputThe Controller provides one general purpose line (GP I/O) available on the a

Open ControllerTheory of Operation 5A.3-7The K1µP provides an address bus of 16 address lines (A0-A15), and a data bus of 8 data lines (D0-D7). There

Open Controller5A.3-8 Theory of Operation2.13 FLASH Electronically Erasable Programmable Memory (FLASH EEPROM)The 256 KByte FLASH EEPROM (U0102) conta

GeneralTheory of Operation 5A.3-92.15 Static Random Access Memory (SRAM)The SRAM (U0103) contains temporary radio calculations or parameters that can

Transmit Audio Circuits5A.3-10 Theory of Operation4.0 Transmit Audio CircuitsRefer to Figure 3.1 for reference for the following sections.4.1 Mic Inpu

Transmit Audio CircuitsTheory of Operation 5A.3-114.2 External Mic PathThe external microphone signal enters the radio on accessory connector J0400 pi

Transmit Signalling Circuits5A.3-12 Theory of Operation5.0 Transmit Signalling CircuitsRefer to Figure 3.2 for reference for the following sections. F

Transmit Signalling CircuitsTheory of Operation 5A.3-135.2 High Speed DataHigh speed data refers to the 3600 baud data waveforms, known as Inbound Sig

Receive Audio Circuits5A.3-14 Theory of Operation6.0 Receive Audio CircuitsRefer to Figure 3.3 for reference for the following sections.Figure 3.3 Re

Receive Audio CircuitsTheory of Operation 5A.3-15CH ACT is routed to the µP pin 25 (pin 40 from version 0102726B09_Cntl on) while SQ DET adds up with

Table of Contents5A-ii 403-470MHz Specific Information

Receive Audio Circuits5A.3-16 Theory of OperationThe audio PA is enabled via AUDIO PA ENABLE signal from the ASFIC (U0201-B5). When the base of Q0401

Receive Signalling CircuitsTheory of Operation 5A.3-177.0 Receive Signalling CircuitsRefer to Figure 3.4 for reference for the following sections.Figu

Receive Signalling Circuits5A.3-18 Theory of OperationThe allowable internal alert tones are 304, 608, 911, and 1823Hz. In this case a code contained

Receiver Front-EndTheory of Operation 5A.3-19UHF SPECIFIC CIRCUIT DESCRIPTION8.0 Receiver Front-EndThe receiver is able to cover the UHF range from 40

Transmitter Power Amplifier (PA) 5-25W5A.3-20 Theory of Operation8.3 IF IC (U5201)The first IF signal from the crystal filters feeds the IF IC (U5201) at

Transmitter Power Amplifier (PA) 5-25WTheory of Operation 5A.3-219.2 PA Stages The bipolar transistor Q5520 is driven by Q5510. To reduce the collector

Transmitter Power Amplifier (PA) 5-25W5A.3-22 Theory of OperationA high impedance resonant circuit formed by D5551 in off state and L5554, C5559 preven

Frequency SynthesisTheory of Operation 5A.3-23Loop frequency response is controlled by opamp feedback components R0712 and C0711. Opamp U0701-3 compar

Frequency Synthesis5A.3-24 Theory of Operation10.2 Fractional-N Synthesizer (U5701)The FRAC-N synthesizer IC (U5701) consists of a pre-scaler, a progr

Frequency SynthesisTheory of Operation 5A.3-2510.4 Synthesizer OperationThe complete synthesizer subsystem works as follows. The output signal of the

Model Chart and Test Specifications 5A.1-i Chapter 5A.1 Model Chart and Test Specifications Table of Contents Table of Contents Paragraph Page 1.0 Ove

Frequency Synthesis5A.3-26 Theory of Operation

PCB/Schematic Diagrams and Parts Lists 5A.4-iChapter 5A.4PCB/Schematic Diagrams and Parts ListsTable of ContentsTable of ContentsDescription PageUHF (

Table of Contents5A.4-ii PCB/Schematic Diagrams and Parts ListsParagraph PageOpen Controller_IO Schematic Diagram 3 of 3 . . . . . . . . . . . . . . .

UHF (403-470MHz) Main Board Top Side PCB No. 8402626Y08_T4Diagrams and Parts Lists 5A.4-1 UHF (403-470MHz) Main Board Top SidePCB No. 8402626Y08_T4C0

UHF (403-470MHz) Main Board Bottom Side PCB No. 8402626Y08_T45A.4-2 Diagrams and Parts Lists UHF (403-470MHz) Main Board Bottom SidePCB No. 8402626Y0

UHF (403-470MHz) Controller Schematic DiagramDiagrams and Parts Lists 5A.4-3 UHF (403-470MHz) Controller Schematic Diagram1 of 2

UHF (403-470MHz) Controller Schematic Diagram5A.4-4 Diagrams and Parts Lists Controller Parts List Circuit RefMotorolaPart No.Description C0100 21137

UHF (403-470MHz) Controller_IO Schematic DiagramDiagrams and Parts Lists 5A.4-5 UHF (403-470MHz) Controller_IO Schematic Diagram2 of 2

UHF (403-470MHz) Controller_IO Schematic Diagram5A.4-6 Diagrams and Parts Lists Controller_IO Parts List R0220 0662057A770662057A8415k 1/16W 5% (12.5

UHF (403-470MHz) Supply Voltage Schematic DiagramDiagrams and Parts Lists 5A.4-7 UHF (403-470MHz) Supply Voltage Schematic Diagram+5VIGNITION_CONTROL

Table of Contents5A.1-ii Model Chart and Test Specifications

UHF (403-470MHz) Supply Voltage Schematic Diagram5A.4-8 Diagrams and Parts Lists Supply Voltage Parts List Circuit RefMotorolaPart No.Description C0

UHF (403-470MHz) Power Control Schematic DiagramDiagrams and Parts Lists 5A.4-9 UHF (403-470MHz) Power Control Schematic DiagramVAG10KR0725(SV)(PA)(C

UHF (403-470MHz) Power Control Schematic Diagram5A.4-10 Diagrams and Parts Lists Power Control Parts List Circuit RefMotorolaPart No.Description C0

UHF (403-470MHz) Power Amplifier 5-25W Schematic DiagramDiagrams and Parts Lists 5A.4-11 UHF (403-470MHz) Power Amplifier 5-25W Schematic DiagramHARMON

UHF (403-470MHz) Power Amplifier 5-25W Schematic Diagram5A.4-12 Diagrams and Parts Lists Power Amplifier 5-25W Parts List Circuit RefMotorolaPart No.De

UHF (403-470MHz) Synthesizer Schematic DiagramDiagrams and Parts Lists 5A.4-13 UHF (403-470MHz) Synthesizer Schematic DiagramNot Used

UHF (403-470MHz) Synthesizer Schematic Diagram5A.4-14 Diagrams and Parts Lists Synthesizer Parts List Circuit RefMotorolaPart No.Description C5700 21

UHF (403-470MHz) Voltage Controlled Oscillator Schematic DiagramDiagrams and Parts Lists 5A.4-15 UHF (403-470MHz) Voltage Controlled Oscillator Schem

UHF (403-470MHz) Voltage Controlled Oscillator Schematic Diagram5A.4-16 Diagrams and Parts Lists Voltage Controlled Oscillator Parts List Circuit Ref

UHF (403-470MHz) RX-FE Schematic DiagramDiagrams and Parts Lists 5A.4-17 UHF (403-470MHz) RX-FE Schematic DiagramGEPD 5407C531736pFC531636pFD5305D530

OverviewModel Chart and Test Specifications 5A.1-1 1.0 Overview This chapter lists the UHF (403-470MHz) models and technical specifications available

UHF (403-470MHz) RX-FE Schematic Diagram5A.4-18 Diagrams and Parts Lists RX-FE Parts List Circuit RefMotorolaPart No.Description C5300 2113740F42 43p

UHF (403-470MHz) RX-IF Schematic DiagramDiagrams and Parts Lists 5A.4-19 UHF (403-470MHz) RX-IF Schematic Diagram

5A.4-20 Diagrams and Parts Lists RX-IF Parts List Circuit RefMotorolaPart No.Description C5200 2113740F35 22pF 5% 50VC5201 2113740F19 4.7pF 5% 50VC52

UHF (403-470MHz) Main Board Top Side PCB No. 8486072B01_T1Diagrams and Parts Lists 5A.4-21 UHF (403-470MHz) Main Board Top SidePCB No. 8486072B01_T1C

UHF (403-470MHz) Main Board Bottom Side PCB No. 8486072B01_T15A.4-22 Diagrams and Parts Lists UHF (403-470MHz) Main Board Bottom SidePCB No. 8486072B

UHF (403-470MHz) Controller Schematic DiagramDiagrams and Parts Lists 5A.4-23 UHF (403-470MHz) Controller Schematic Diagram1 of 210J0101-102702R01102

UHF (403-470MHz) Controller Schematic Diagram5A.4-24 Diagrams and Parts Lists Controller Parts List Circuit RefMotorolaPart No.Description C0100 21

UHF (403-470MHz) Controller_Audio Schematic DiagramDiagrams and Parts Lists 5A.4-25 UHF (403-470MHz) Controller_Audio Schematic Diagram2 of 3C02252_1

UHF (403-470MHz) Controller_Audio Schematic Diagram5A.4-26 Diagrams and Parts Lists Q0431 4880048M01 NPN DIG 47k/47kQ0432 4813824A10 NPN 40V .2A B=50

UHF (403-470MHz) Controller_IO Schematic DiagramDiagrams and Parts Lists 5A.4-27 UHF (403-470MHz) Controller_IO Schematic Diagram3 of 3560R04821K.002

Model Chart5A.1-2 Model Chart and Test Specifications 2.1 Service Options Description GM950 403-470 MHz 12.5 kHz 25W HHCMGM950 403-470 MHz 12.5 kHz 2

UHF (403-470MHz) Controller_IO Schematic Diagram5A.4-28 Diagrams and Parts Lists VR0412 4813830A40 SOC23 AUTO SDNVR0415 4813830A27 14V 5% 225mWVR0416

UHF (403-470MHz) Supply Voltage Schematic DiagramDiagrams and Parts Lists 5A.4-29 UHF (403-470MHz) Supply Voltage Schematic DiagramSW_B+_810uFC060334

UHF (403-470MHz) Supply Voltage Schematic Diagram5A.4-30 Diagrams and Parts Lists Supply Voltage Parts List Circuit RefMotorolaPart No.Description C0

Technical SpecificationModel Chart and Test Specifications 5A.1-3 3.0 Technical Specification 3.1 General 3.2 Transmitter SPECIFICATION ITEM TYPICAL