jotron Tron TR20 GMDSS Technical Handbook
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jotron Tron TR20 GMDSS Technical Handbook

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JOTRON electronics a.s.
Tron TR20 GMDSS
Tron TR20 PLUS
Technical Handbook
Januar 2003
Tron TR20
1-1

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  • Page 1 JOTRON electronics a.s. Tron TR20 GMDSS Tron TR20 PLUS Technical Handbook Januar 2003 Tron TR20...
  • Page 2 AMENDMENT RECORD AMDT INCORP. BY DATE PAGE(S) AMDT INCORP. BY DATE PAGE(S) 15.10.01 BOM/KP/E-99936 04.02.03 BOM/E-99940 EM3681 EM3942 23.10.01 BOM/KP/E-99936 10.03.03 BOM/E-99940 EM3688 EM3948 08.11.01 BOM-99936 10.03.03 BOM/E-99940 EM3953 EM3699 14.11.01 BOM/KP/E-99940 10.03.03 BOM/E-99936 EM3727 EM3954 14.11.01 BOM/KP/E-99936 EM3728 14.12.01 2-1,5-2, 7-1, 8-1 BOM-99940 07.01.02...
  • Page 3 This equipment contains CMOS integrated circuits. Observe handling precautions to avoid static discharges which may damage these devices. JOTRON electronics a.s reserves the right to make changes without further notice to any products or modules described herein to improve reliability, function or design.

  • Page 4: Table Of Contents

    CONTENTS ----------------------------------------------------------------------------------------------------------------- SYSTEM DESCRIPTION ..............1-5 General information .......................... 1-5 TECHNICAL SPECIFICATION .............2-1 FUNCTIONAL DESCRIPTION............3-1 Precautions and Warnings........................ 3-1 Batteries ............................... 3-1 Connectors and cables..........................3-1 Display and front panel ..........................3-1 Storage and safe handling ..........................3-1 OPERATING INSTRUCTIONS .............4-1 Controls.............................

  • Page 5: System Description

    This version is equipped with connectors for use of external headset and/or microphone. IP rating on this version is IP54. The housing is made in the same material as the Tron TR20 GMDSS, but the colour is grey as opposed to the orange GMDSS version...

  • Page 6: Technical Specification

    2. TECHNICAL SPECIFICATION General Frequency range: 156 – 163 MHz Channel spacing: 25kHz (12.5kHz optional) Operating temperature range: –20 to +55°C. Battery life: > 8 hours (Lithium battery, 2W power output, 10-10-80) > 7 hours (1500mAh NiMH battery, 5W power output, 5-5-90) Antenna connector: Microphone connector: 2.5mm jack (Tron TR20 PLUS)

  • Page 7: Functional Description

    3. FUNCTIONAL DESCRIPTION Precautions and Warnings Batteries Two types of batteries are used: Rechargeable batteries for normal use (type 80059), and Lithium batteries for emergency use (type 80060). The rechargeable battery is of NiMH type with a capacity of 7.2V/1500mAh. The following should be noticed: •...

  • Page 8: Operating Instructions

    4. OPERATING INSTRUCTIONS Controls Fig. 2.1 shows the location of different controls and facilities of the Tron TR20: 1 - PTT (Push To Talk) 2 - Up 3 - Menu 4 - Channel 5 - High / Low power 6 - Channel 16 7 - Battery release 8 - ON / OFF 9 - Down...

  • Page 9: Technical Description

    5. TECHNICAL DESCRIPTION Introduction The transceiver consists of 3 printed circuit boards. • Main board (99940) This board contains the power supply and power control circuits. In addition the board contains the microcontroller and display. • Synth/IF board (99936a) The synthesiser unit includes the VCO, buffer amplifier and synthesiser for the transceiver. It also contains the IF and detector circuits for the receiver.

  • Page 10: Receiver Audio Circuits

    Receiver Audio circuits The audio signal from the IF section enters through J103 # 19, and is feed to the de-emphasis network (R128, C122), and then to the low pass filter (IC105B). The signal is then feed to the audio output amplifier (IC107).

  • Page 11: If Circuit

    IF circuit The 21.4 MHz signal from the 1. Mixer on the RF board is feed trough two sections of crystal filters (Y1 and Y2). The signal is then fed trough a matching network into the IF integrated circuit (IC1). It then enters the second mixer, and is converted down to 450kHz, amplified and feed trough two sections of ceramic band pass filters (FLT1 and FLT2).

  • Page 12: Maintenance

    6- Press enter to store the setting. NOTE! On Tron TR20 GMDSS the power output must never be adjusted higher than 2.5W. If a higher output power is selected, the radio may not operate properly due to the relative high internal resistance of the Lithium battery.
  • Page 13 To adjust Modulation: The radio must be connected to a radio test set, and an audio signal must be applied to the microphone input (Tron TR20 PLUS). 1- Press the “Hi/Lo” key while powering up the Tron TR20 to enable service mode. 2- Set the radio to High Power by pressing the “Hi/Lo”...

  • Page 14: Diagrams

    7. DIAGRAMS Block diagram Tron TR20 E-80020 Circuit diagram, Main board part 1 E-99940 -1/2 Circuit diagram, Main board part 2 E-99940 -2/2 Place plan, Main board, part 1 KP-99940 -1/2 Place plan, Main board, part 2 KP-99940 -2/2 Circuit diagram, RF board E-99936-1/2 Circuit diagram, Synth / IF board E-99936-2/2...
  • Page 16 09.01.2003 12:53:13 f=0.99 M:/Products/TR20/Technical_Info/Drawing_Electrical/TR20/Mainboard/0215/99879mod.sch (Sheet: 1/2)
  • Page 17 09.01.2003 12:53:48 f=0.99 M:/Products/TR20/Technical_Info/Drawing_Electrical/TR20/Mainboard/0215/99879mod.sch (Sheet: 2/2)
  • Page 18 09.01.2003 11:03:32 f=1.41 M:/Products/TR20/Technical_Info/Drawing_Electrical/TR20/Mainboard/0215/99879mod.brd...
  • Page 19 09.01.2003 11:04:23 f=1.41 mirrored M:/Products/TR20/Technical_Info/Drawing_Electrical/TR20/Mainboard/0215/99879mod.brd...
  • Page 22 09.01.2003 11:07:22 f=1.41 M:/Products/TR20/Technical_Info/Drawing_Electrical/TR20/RF_board/R0230/99936_r0.brd...
  • Page 23 09.01.2003 11:07:57 f=1.41 mirrored M:/Products/TR20/Technical_Info/Drawing_Electrical/TR20/RF_board/R0230/99936_r0.brd...

  • Page 26: Parts Lists

    8. PARTS LISTS • Part list, Complete Transceiver BOM-99930 • Part list, Main Board BOM-99940 • Part list, RF Unit BOM-99936 • Part list, Lithium Battery BOM-80060 • Part list, NiMH Battery BOM-80059 Tron TR20...
  • Page 27 JOTRON electronics a.s. Bill Of Material Date 16.11.2001 Item 99930 Tron TR20 PORTABLE GMDSS RADIO Manufacturing Version Item Name / Description Makes no. / Additional name Sub pos. 80030 Complete front (GMDSS) 99944 Brytertapp for PTT 99893 Pakningstiver Delrin 507...
  • Page 28 JOTRON electronics a.s. Page 1 of 5 Bill Of Material Date 16.11.2001 Item 99940 Mainboard complete Design Version EM3727 Item Name / Description Makes no. / Additional name Sub pos. MURATA GRM39 COG 101J 50 98284 CHIP CAP 100p 50V - 0603...
  • Page 29 JOTRON electronics a.s. Page 2 of 5 Bill Of Material Date 16.11.2001 Item 99940 Mainboard complete Design Version EM3727 Item Name / Description Makes no. / Additional name Sub pos. MURATA GRM40 X7R 105M 16 C150 99796 CHIP CAP 1uF 16v X7R 0805 NIPPON CHEMI-CON MVS6.3VC100M F46 TP...
  • Page 30 JOTRON electronics a.s. Page 3 of 5 Bill Of Material Date 16.11.2001 Item 99940 Mainboard complete Design Version EM3727 Item Name / Description Makes no. / Additional name Sub pos. SIEMENS B82422-A3151-K100 L102 97411 DROSSEL SMD 150nH SIEMENS B82422-A1102-K100 L103 93158 DROSSEL 1.0uH SMD - 1210...
  • Page 31 JOTRON electronics a.s. Page 4 of 5 Bill Of Material Date 16.11.2001 Item 99940 Mainboard complete Design Version EM3727 Item Name / Description Makes no. / Additional name Sub pos. ROHM MCR03 EZP FX-1002 R127 98447 CR 0603 10k 1%...
  • Page 32 JOTRON electronics a.s. Page 5 of 5 Bill Of Material Date 16.11.2001 Item 99940 Mainboard complete Design Version EM3727 Item Name / Description Makes no. / Additional name Sub pos. ROHM MCR03 EZP FX-1001 R174 98423 CR 0603 1k0 1%...
  • Page 33 JOTRON electronics a.s. Page 1 of 5 Bill Of Material Date 16.11.2001 Item 99936 RF board complete Design Version EM3728 Item Name / Description Makes no. / Additional name Sub pos. MURATA GRM39 COG 180J 50 98277 CHIP CAP 18p 50V - 0603...
  • Page 34 JOTRON electronics a.s. Page 2 of 5 Bill Of Material Date 16.11.2001 Item 99936 RF board complete Design Version EM3728 Item Name / Description Makes no. / Additional name Sub pos. MURATA GRM39 X7R 104Z 25 C046 98322 CHIP CAP 100n 25V - 0603...
  • Page 35 JOTRON electronics a.s. Page 3 of 5 Bill Of Material Date 16.11.2001 Item 99936 RF board complete Design Version EM3728 Item Name / Description Makes no. / Additional name Sub pos. PHILIPS BB134, SOD323(TAPE) D006 95970 VARICAP BB134, SOD323 ALPHA SMV1255-011...
  • Page 36 JOTRON electronics a.s. Page 4 of 5 Bill Of Material Date 16.11.2001 Item 99936 RF board complete Design Version EM3728 Item Name / Description Makes no. / Additional name Sub pos. Q007 OMIT Utgår PHILIPS BFG520,215 Q008 98346 TRANSISTOR BFG 520 - SOT143...
  • Page 37 JOTRON electronics a.s. Page 5 of 5 Bill Of Material Date 16.11.2001 Item 99936 RF board complete Design Version EM3728 Item Name / Description Makes no. / Additional name Sub pos. ROHM MCR03 EZP FX-1200 R046 98401 CR 0603 120R 1%...
  • Page 38 JOTRON electronics a.s. Bill Of Material Date 14.12.2001 Item 80060 LITHIUM BATTERY FOR Tron TR20 Manufacturing Version Item Name / Description Makes no. / Additional name Sub pos. 80046 Lithium batteripakke, TR-20 6xL91 Energizer 80057 Innvendig batteri etikett, Litium bat.
  • Page 39 JOTRON electronics a.s. Bill Of Material Date 14.12.2001 Item 80059 BATTERY NiMH FOR Tron TR20 Manufacturing Version Item Name / Description Makes no. / Additional name Sub pos. 80047 NiMH batteripakke, TR-20 80056 Innvendig batteri etikett, NiMH batteri Fascal 805, Orange/Sort txt 99884 PCB BATTERIKORT Rev.0143...
  • Page 40 9. Appendix A The IR serial interface is for factory use only. It enables a computer to control the TR20 via the Jotron PRU-40 infrared interface. Serial interface commands (IR) Function Read Write Response Comment Volume $vo,100 Value 0-255 $vo,125...

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