Simrad HT50 Assembly Instructions Manual
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Simrad HT50 Assembly Instructions Manual

Simrad HT50 Assembly Instructions Manual

Vhf handheld radio telephone
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Table of Contents

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1
INTRODUCTION
1.1
1.2
2
3
3.1
4
4.1
5
5.1
RF PCB Assembly
5.2
Control PCB Assembly
6
6.1
6.2
7
7.1
Channel Characteristic Programming
7.2
Using the Programming Software
8
8.1
8.2
9
9.1
9.2
10
DRAFT
CONTENTS
DRAFT
1

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  • Page 1: Table Of Contents

    DRAFT CONTENTS INTRODUCTION Electronic PCBs Mechanical Components OPERATION ASSEMBLY INSTRUCTIONS Not yet available MECHANICAL ASSEMBLY DRAWINGS Not yet available CIRCUIT DESCRIPTIONS RF PCB Assembly Control PCB Assembly CIRCUIT DIAGRAMS Circuit Schematics Component Lists and Layouts PROGRAMMING AND CONFIGURATION Channel Characteristic Programming Using the Programming Software FAULT FINDING Common User Faults...

  • Page 2: Electronic Pcbs

    DRAFT INTRODUCTION TO THE HT50 VHF HANDHELD RADIO TELEPHONE The HT50 transceiver offers high performance, low power consumption, robust construction and dependable reliability in a small and easy to handle package. The shockproof casing with push button keys, for ease of operation, is fully waterproofed to a depth of 1 metre and will withstand the shock of being dropped onto a hard surface from a height of 1 metre.
  • Page 3 OPERATING THE HT50 VHF HANDHELD RT This Service Manual only contains operating instructions for those features of the HT50 that are not normally available to the end user. For details of normal operation please refer to the HT50 Operation Manual, E0XXXX.
  • Page 4 DRAFT • 48 seconds receive with audio muted • 6 seconds transmit at high power Exit from this mode can only be achieved by turning the radio off. Tx / Rx Cycle Test Mode (only available on special radios) The radio can be placed in this mode by holding down the SQUELCH & D/W keys.

  • Page 5: Assembly Instructions

    DRAFT ASSEMBLY INSTRUCTIONS Not yet available DRAFT...

  • Page 6: Mechanical Assembly Drawings

    DRAFT MECHANICAL ASSEMBLY DRAWINGS Not yet available DRAFT...

  • Page 7: Circuit Descriptions

    CIRCUIT DESCRIPTIONS Introduction The HT50 consists of 2 PCB assemblies. The RF PCB assembly, Navico Part No. E03466, contains all the transmitter and receiver circuitry including the synthesiser and Voltage Controlled Oscillator (VCO). The control PCB assembly, Navico Part No. E03463, houses the microprocessor, user controls, audio and supply regulation circuitry and the LCD drivers.
  • Page 8 DRAFT The signal is then applied to mixer TR2 where it is mixed with the VCO output, 21.4 MHz below the signal frequency. The output of the mixer, first Intermediate Frequency (IF) at 21.4MHz, is matched into the crystal filter network Xtal 1 and Xtal 2 by CH3, C26 and R8.
  • Page 9 DRAFT DRAFT...
  • Page 10 DRAFT Control PCB. All the functions of the radio are controlled from this assembly by the microprocessor IC10. Refer to Drawing No. E03461. Power Supply. When the ON / OFF key S1 is pressed TR2 is momentarily turned on which provides power to the voltage regulators. This in turn powers up the microcontroller circuit which grounds the base of TR1 and holds TR2 Voltage regulation is provided by two separate 5 volt regulators, REG1 and REG2 which provide 5 volt supplies to digital and RF circuitry.
  • Page 11 DRAFT throughTR6 which is turned on only when the radio is in the receive mode and not squelched. Volume control is provided by a d.c. level, generated by IC6 and IC11, supplied to the volume control pin on IC2. IC6 is a shift register which is connected to the microcontroller and the appropriate volume level is set from information generated by the raise and lower keys on the front panel when Volume is selected.
  • Page 12 DRAFT Mic in IC2b Mod out 4.096MHz Clock, Data & Reset Enables TR4, TR5 Rotary PTT / Data Out Encoder Reverse Power 1/25 Main CPU Carrier Power Scan Squelch Level Squelch AF In Reset 4.096MHz AF Out IC2a IC103a,b IC103c, d D1, TR11 TR11 Analogue 0V...
  • Page 13 DRAFT DRAFT...
  • Page 14 DRAFT XTAL303 TR301 17.9MHz DSC AF Out TR300 IF Chip RF from main IC302 Rx-Tx Board XTAL 300, IC300 XTAL302 TR302, 302, VC301 IC301 Clock VCO & Synth Data Buffer Enable 2 TR305 XTAL304 E03209 Block Diagram DRAFT...

  • Page 15: Circuit Diagrams

    DRAFT CIRCUIT DIAGRAMS Circuit Schematics Radio Frequency PCB E03464 Control PCB E03461 DRAFT...

  • Page 16: Component Lists And Layouts

    DRAFT Component Lists and Layouts Radio Frequency PCB Assembly Detail E03466 Control PCB Assembly Detail E03463 Not yet complete DRAFT...

  • Page 17: Programming And Configuration

    DRAFT PROGRAMMING AND CONFIGURATION Introduction All Transmitting / Receiving characteristics of the H2 Series radio telephones are stored in Non Volatile Memory (NVM). The NVM of any H2 Series radio can be programmed with new characteristics using the programming kit, Part Number XXXXX.
  • Page 18 WINDOWS 95 / 97 / 98 but operates satisfactorily under 3.1 or 3.11). H2 RADIO SETUP PROGRAM --------------------------------------------------------- Version 1.0 Copyright (C) Simrad-Navico Ltd 1998 This program allows the dealer to configure the H2 series Radios to any mode including the programming of private channels. WARNING...
  • Page 19 DRAFT H2 RADIO SETUP PROGRAM --------------------------------------------------------- Using COM1 port on computer NVM Data: NOT LOADED Select option:- 1 - Load NVM data from Radio (Copy data from radio to PC) 2 - Load NVM data from File (Load data from programme file) 3 - View/Modify NVM data (View/change displayed data) 4 - Save NVM data to Radio...
  • Page 20 DRAFT Load NVM data from Radio Connect Radio, press any key when ready Failed - check connections, is radio turned on? NVM data Any key to continue, [ESC] to exit Load NVM data from Radio Connect Radio, press any key when ready NVM data loaded successfully NVM data 00: 0010...
  • Page 21 DRAFT H2 RADIO SETUP PROGRAM --------------------------------------------------------- Using COM1 port on computer NVM Data: LOADED Software: 001 Select option:- 1 - Load NVM data from Radio 2 - Load NVM data from File 3 - View/Modify NVM data 4 - Save NVM data to Radio 5 - Save NVM data to File 6 - CLONE from existing Radio 7 –...
  • Page 22 DRAFT Load NVM data from File Enter NVM Data File Name: File cannot be found or cannot be opened NVM data Enter file name (and path if required) or [ESC] to exit Load NVM data from File Enter NVM Data File Name: D8.DAT File loaded successfully NVM data 00: 0010...
  • Page 23 DRAFT View / Modify NVM data This option is not available NVM data has not been loaded Use options 1 or 2 to load data Press any key to exit View / Modify NVM data Configuration Settings Country : INT Second Mode Enabled : YES Scanning Enabled : YES Channel 10 Scan Enabled : NO...
  • Page 24 DRAFT View / Modify NVM data Normal Channel Settings 0 : - - - 16 : - - S 60 : - - D 76 : - - - 01 : - - D 17 : - L S 61 : - - D 77 : - - S 02 : - - D 18 : - - D...
  • Page 25 DRAFT Frequency Setting. Operate Space Bar, following screen appears: A1 Frequency Enter Required Frequency in MHz [Enter] accept [ESC] exit Enter frequency then press Enter to accept. Select next channel. Save NVM data to Radio Verifying NVM data in radio Verify successful, radio is programmed NVM data 00: 0010...
  • Page 26 DRAFT Clone Radio Loading data from radio Connect TARGET radio, press any key when ready Any key to continue, [ESC] to exit Clone Radio Writing NVM data to radio Verifying data in radio NVM data verified successfully [ESC] to exit Any other key to repeat DRAFT...

  • Page 27: Fault Finding

    DRAFT FAULT FINDING Common User Faults Not Yet Available. Common Technical Faults Not Yet Available DRAFT...

  • Page 28: Spare Parts Detail

    DRAFT SPARE PARTS DETAIL Spares Service Aids DRAFT...

  • Page 29: Technical Notes

    DRAFT TECHNICAL NOTES DRAFT...

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