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SmarTrunk Systems ST-3118V Service Manual

Vhf fm digital transceiver
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VHF FM DIGITAL TRANSCEIVER
ST-3118V
(136Mhz ~ 174Mhz)
SERVICE MANUAL
SmarTrunk Systems, INC.
ST-3118V SM R1.1

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  • Page 1 VHF FM DIGITAL TRANSCEIVER ST-3118V (136Mhz ~ 174Mhz) SERVICE MANUAL SmarTrunk Systems, INC. ST-3118V SM R1.1...

  • Page 2: Table Of Contents

    Contents Specifications: ..........................5 ST-3118 EXPLODED VIEW ......................6 ST-3118V SIMPLIFIED DIAGRAM ....................7 4. - ST-3118 RF DESCRIPTION ........................ 8 4.1. Circuit Configuration ......................... 8 4.2. Receiver System ........................8 4.2.1. Front-end RF Receiver ......................8 4.2.2. ANALOG Audio Processing ....................8 4.2.3.
  • Page 3 DISPLAYS AND LEDS: ....................... 28 7.1.1. Auto backlight delay alignment: ..................28 7.1.2. Power on Text: ........................28 7.1.3. Leds: ............................ 28 7.2. Tones ............................28 7.3. ANNUNCIATION ........................29 ST-3118V MAIN BOARD SCHEMATIC ..................32 ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.
  • Page 4 ST-3118V COMPONENT LOCATOR (TOP LAYER) ................. 34 10.2. ST-3118V COMPONENT LOCATOR (BOTTOM LAYER) ..............35 10.3. ST-3118V FRONT BOARD COMPONENT LOCATOR (TOP LAYER) ..........36 10.4. ST-3118V FRONT BOARD COMPONENT LOCATOR (BOTTOM LAYER) ........37 ST-3118V PCB LAYOUT ........................38 11.1.

  • Page 5: Specifications

    1. Specifications: SPECIFICATION ST-3118V Frequency Range [Mhz] 136 TO 174 Channels Groups/Banks Power [Vdc] 12 to 15 Dimensions [mm] 50(H)x128(D)x150(W) Weight [gr] (oz) 1.2Kg (2.6lbs) Temperature range - 30 °C ~ 60 °C (-22°F ~ +140°F) Signaling 51 CTCSS tones / 183 DCS tones / 65534 SDR IDs Display 2”...

  • Page 6: St-3118 Exploded View

    ST-3118 EXPLODED VIEW ST-3118...

  • Page 7: St-3118V Simplified Diagram

    3. ST-3118V SIMPLIFIED DIAGRAM TX CTRL [Q9 Q18] Ant Sw Buffer Power Detection Final AMP Driver D1/D2/ Radio [U9] CLOCK [Y1] POWER CTRL [U10] AUDIO PA Ext SP JACK/SP [U8] [j3] Audio Processor Modem [U12] SIDE KEYS Main Processor CLOCK...

  • Page 8: St-3118 Rf Description

    4. - ST-3118 RF DESCRIPTION 4.1. Circuit Configuration RECEIVER PROTECTION SWITCH FILTER [U2] The receiver is a single receiver with built DSP fully integrated. Figure 1: Receiver block Diagram diodes, and then fed to the receiver Incoming signals from the antenna, (U2) passing through a limiter BPF.

  • Page 9: Virtual Volume Control

    (U14). If the received signaling matches the channel programming, then the The vocoder re-builds the audio main processor (U13) requests the from the compressed data then applies filters, adjust the volume ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 10: Transmitter System

    (U2), which performs a direct modulation of a generated carrier. Low frequency signaling audio are fed directly to Y1 VC TXCO main clock generator and U2 with a ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 11: Drive And Final Amplifier Stages

    The RF power detector (U1) detects transmitted feedback and reverse power feedback, then the detected signals are send to power control stage (U10) to be compared with the referenced power control coming from audio processor U12 (CMX- ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 12: St-3118 Alignment

    Authorized adjustments performed Smartrunk service technicians afterwards. Do not attempt to realign circuits make perform only a single step unless it complete performance checks to ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 13: Required Test Equipment

    Precautions it, but some of the test cannot be performed correctly. A 50-Ohm RF Dummy Load and in- line wattmeter must be connected to the main antenna jack in all ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 14: Main Radio Alignment

    Figure 8: Connecting to the Alignment Mode 13.8Vdc Power Supply PC compatible If the radio isn’t connected, then the Figure 9s: Transmitter Alignment Instruments program will be timed out after 20 Connection seconds. ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 15: Main Clock Alignment

    Figure 11: Default Alignment Values Retrieve 5.6.2. Transmit Power alignment: ST-3118 has three power levels to be selected for each channel. High, medium and low power level can be aligned radio usage Figure 10: Main Clock Alignment requirement. ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 16: High Power Level Alignment

    [Start], value manually at the time you otherwise the alignment should be check the real transmit power on not correct. the wattmeter connected to the radio recommended alignment diagram. ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 17: Mid Power Level Alignment

    5.6.3. ANALOG MAXIMUM DEVIATION into current alignment settings Maximum deviation analog signals modulated from ST-3118 can be aligned by ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 18: Modulation Gain Alignment

    1000Hz alignment reference tone alignment For this alignment step, the radio proposes. does not generate any signal. It only stores the new value of the overall modulation gain into the memory. ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 19: Tdma Data Modulation Alignment

    Press [Start] then move the slider to reference tone alignment reach the desired value at the time proposes. you checks the deviation meter to reach the desired signaling level for narrow band operation. Radio will generate 1000Hz alignment ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 20: Dtmf Signaling Level Alignment

    Press [Start] then move the slider to Actual alignment value will be reach the desired value at the time displayed on alignment slider. you checks the deviation meter to ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 21: Ctcss Signaling Alignment

    Alignment screen. Figure 23: FSK Modulation Level Alignment Screen Figure 22: CTCSS Level Alignment Screen Actual alignment value will be Actual alignment value will be displayed on alignment slider. displayed on alignment slider. ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.
  • Page 22 [Factory] instead of [Start]. You will be asked to confirm the factory default alignment, and then if you confirm it, original values from factory will be loaded into current alignment settings. ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 23: Receiver Alignment

    This is a critical parameter, which may not be realigned to different values other than factory default. Under your risk, if you still prefer to realign the overall modulation gain, you must select Discriminator Gain on Alignment screen. ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 24: Complimentary User Alignment

    As soon as you click on Options… possible. the Options screen is popped up: Press [OK] to store it in the file. The value will be updated after the file is transferred to the radio. ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 25: Analog External Mic Gain

    If you want to use AGC, then you If you want to use AGC, then you must select the target equivalent must select the target equivalent gain on the Mic Gain then check the ACG Check Box. ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 26: Minimum Volume Level

    Press [OK] to store it in the file. It can be aligned up to 250 (max) The value will be updated after the step 1. file is transferred to the radio. ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 27: Disable Rf Power

    To disable the RF power amplifier, check the box: Press [OK] to store it in the file. The value will be updated after the file is transferred to the radio. ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 28: Radio Appearance Alignment

    Figure 34: Display/Leds Appearance Screen demands no lights on the radio. 7.1. DISPLAYS AND LEDS: 7.2. Tones This screen lets you adjust the behavior of the display backlight, Power On text and TX/RX LEDs. ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 29: Annunciation

    7.3. ANNUNCIATION Check GPS if you want the radio plays a concerning message back Third folder on appearance screen, any time the GPS changes the allows the user to define if the radio ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.
  • Page 30 Press OK once you finish setting all desired messages. This feature will be stored into the file then it will be transferred to the radio at the time the file is uploaded to the radio. ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.
  • Page 31 Notes: ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 32: St-3118V Main Board Schematic

    8. ST-3118V MAIN BOARD SCHEMATIC RADIO REFERENCES IF COMPONENT IS DIFERENT BETWEEN THE DIFERENT MODELS, THEN Y OU WILL FIND TWO VALUES CLOSE TO THE COMPONENT. BLUE VALUES CORRESPOND TO ST-3118V IRQR MUTE PINK VALUES CORRESPOND TO ST-3118C & ST-3113D...

  • Page 33: St-3118 Front Board Schematic

    UPCK UVSS UVSS Vin+ MOSI TXLED R155 UVSS MISO HOOK_RX R154 RESET Vout C136 MICI Vin- SMARTRUNK SYSTEMS, INC PTT_TX MCP6241U C229 PROG Title AF_OUT C143 C144 ST-3118FB Size Document Number 8 HEADER DM-111222-01 Date: Friday , October 18, 2013...

  • Page 34: Component Locator

    COMPONENT LOCATOR 10.1. ST-3118V COMPONENT LOCATOR (TOP LAYER)

  • Page 35: St-3118V Component Locator (Bottom Layer)

    10.2. ST-3118V COMPONENT LOCATOR (BOTTOM LAYER) ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 36: St-3118V Front Board Component Locator (Top Layer)

    10.3. ST-3118V FRONT BOARD COMPONENT LOCATOR (TOP LAYER) ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 37: St-3118V Front Board Component Locator (Bottom Layer)

    10.4. ST-3118V FRONT BOARD COMPONENT LOCATOR (BOTTOM LAYER) ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 38: St-3118V Pcb Layout

    ST-3118V PCB LAYOUT 11.1. ST-3118V MAIN BOARD PCB TOP LAYER ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 39: St-3118V Main Board Pcb Bottom Layer

    11.2. ST-3118V MAIN BOARD PCB BOTTOM LAYER ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 40: St-3118V Main Board Pcb Ground Layer

    11.3. ST-3118V MAIN BOARD PCB GROUND LAYER ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 41: St-3118V Main Board Pcb Power Layer

    11.4. ST-3118V MAIN BOARD PCB POWER LAYER ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 42: St-3118V Front Board Pcb Top Layer

    11.5. ST-3118V FRONT BOARD PCB TOP LAYER ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 43: St-3118V Front Board Pcb Top Layer

    11.6. ST-3118V FRONT BOARD PCB TOP LAYER ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 44: St-3118V Bom

    ST-3118V BOM 12.1. ST-3118V MAIN PCB BOM NAME VALUE SMARTRUNK PN DESCRIPTION EPL311810B Main PCB C237 33pF CK1330AK4A CAP CER 33PF 50V 5% NPO 0402 150pF CK1151AK5A CAP CER 150PF 50V C0G 0402 150pF CK1151AK5A CAP CER 150PF 50V C0G 0402...
  • Page 45 CAP CER 0.1UF 16V 10% X7R 0402 100nF CK5104AK5X CAP CER 0.1UF 16V 10% X7R 0402 100nF CK5104AK5X CAP CER 0.1UF 16V 10% X7R 0402 100nF CK5104AK5X CAP CER 0.1UF 16V 10% X7R 0402 ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.
  • Page 46 CAP CER 0.22UF 50V 10% X5R 0603 C121 CK5105AD7RR CAP CER 1UF 16V 10% X7R 0603 C163 CK5105AD7RR CAP CER 1UF 16V 10% X7R 0603 10uF CK6106AD6T CAP CER 10UF 6.3V 10% X5R 0603 ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.
  • Page 47 27nH YCSPG18424 Fixed Inductors Air Core RF Inductor 27.3 nH 5 % 4.4 A 82nH YCSPG18433 Fixed Inductors Air Core RF Inductor 82 nH 2 % 5.6 A 47nH YCMCI4733D CHOKE COIL 47nH ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.
  • Page 48 RES 1.0K OHM 1/16W 5% 0402 SMD R128 RCY041024Z RES 1.0K OHM 1/16W 5% 0402 SMD R133 RCY041024Z RES 1.0K OHM 1/16W 5% 0402 SMD R150 RCY041024Z RES 1.0K OHM 1/16W 5% 0402 SMD ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.
  • Page 49 RES 47K OHM 1/16W 5% 0402 SMD RCY044734Z RES 47K OHM 1/16W 5% 0402 SMD R122 RCY044734Z RES 47K OHM 1/16W 5% 0402 SMD R137 RCY044734Z RES 47K OHM 1/16W 5% 0402 SMD ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.
  • Page 50 IC REG LDO 1.8V 0.3A SOT23-5 RT9167/18PB YNRT916718 VC-TXCO EFO128000O VC-TXCO 12.8Mhz 3.3V +-15/2PPM TXCO19.2M EFO192000Y TCXO 19.2MHZ 3.3V TCXO/+-0.5PPM TXCO16MHZ EFO160000Y TCXO 16MHZ 3.3V TCXO/+-0.5PPM RB886 EDRB886CSY DIODE SCHOTTKY 5V 0.01A 2VMD ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 51: St-3118V Front Pcb Bom

    MIMD YNDC0MD10A LDO LINEAR REGULATOR 3.3V 300mA HT7233 YNHT07233Z IC OPAMP SNGL 1.8V R-R SC70-5 MCP6241U YNMR6241UT 12.3. ST-3118V MIC CONNECTOR PCB BOM ST-3118 MIC CONNECTOR PCB BOM ITEM DESCRIPTION SmarTrunk Part No MIC CONNECTOR PCB EPL311831Z PCB CONNECTOR SOCKET...

  • Page 52: St-3118V Front Panel Assembly Bom

    12.4. ST-3118V FRONT PANEL ASSEMBLY BOM ST-3118D FRONT PANEL ASS'Y BOM ITEM DESCRIPTION SmarTrunk Part MODEL PLATE ST-3118 BL3118010E MODEL PLATE SMART TRUNK BL3118010D TFT WINDOW BL3118020A SPEAKER ES500858OL WIRE CONNECTOR/H 2P EX07N48196 BRACKET ML3118030A SPK SHIELD CLOTH LZZZ60092A FRONT HOUSING...

  • Page 53: St-3118V Mechanical Bom

    12.5. ST-3118V MECHANICAL BOM ST-3118D MECHANICAL BOM ITEM DESCRIPTION SmarTrunk Part SUPPORT BAR ML3118050X MAIN CHASSIS ML3118010A BOTTOM COVER ML3118020A KNOB PL3118020A WIRE BUSHING PL3118060A SET SCREW JS053008MNR SET SCREW JS213006MBR SET SCREW JS033010MBR DC WIRE 2P AWG#14 EX07N49964 CAP ELECT 470uF X 25V...

  • Page 54: St-3118V Packing Bom

    12.6. ST-3118V PACKING BOM ST-3118D PACKING R1.0 BOM ITEM DESCRIPTION Ranger Part No INSTRUCTION MANUAL AT3118010A MICROPHONE EX04N40757 RC-3118 STICKER LMZZ61665A HANDLE ML3118040A DC CORD WITH FUSE AWG#14 WA0012200K PVC BAG (ACCESSORY) UB051015ZZR PVC BAG (MANUAL) UB051625ZZ 0.16 PVC BAG (CARTON)

  • Page 55: External Connections

    GROUND CONNECTION ANALOG/DIGITAL INPUT, DIGITAL OUTPUT 0 TO 3.3V HIGH IMPEDANCE IO4-IGN ANALOG/DIGITAL INPUT 0 TO 15V HIGH IMPEDANCE DIGITAL I/O 0 TO 3.3V, HIGH IMPEDANCE DIGITAL I/O 0 TO 3.3V, HIGH IMPEDANCE ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 56: Usb: Usb 2.0 Compliance

    13.2. USB: USB 2.0 compliance 13.3. External Speaker, (3.5mm) Speaker is balanced output. Do not connect any pin to GND Speaker (-) Speaker (+) ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.

  • Page 57: List Of Figures

    32: A ......................28 IGURE CCESS TO THE PPEARANCE 33: D ......................28 IGURE ISPLAY PPEARANCE CREEN 34: C ....................29 IGURE OURTESY ONES ROGRAMMING CREEN 35: A ..................... 29 IGURE NNUNCIATIONS ROGRAMMING CREEN ST-3118V SM R 1.1 SMARTRUNK SYSTEMS, INC.
  • Page 58 Copyright 2014 Printed in Malaysia www.smartrunk.com ST-3118V SM R1.1 Jan-14...

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