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Nautel VS-TC-HP Technical Instruction Manual

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TECHNICAL INSTRUCTION MANUAL
VS-TC-HP
T
C
RANSFER
ONTROLLER
Document ID:
NHB-VS-TC-HP-TIM
Version:
2.0
Issue Date:
2024-06-01
Status:
Standard
Making Digital Radio
Work

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Summary of Contents for Nautel VS-TC-HP

  • Page 1 TECHNICAL INSTRUCTION MANUAL VS-TC-HP RANSFER ONTROLLER Document ID: NHB-VS-TC-HP-TIM Version: Issue Date: 2024-06-01 Status: Standard Making Digital Radio Work...
  • Page 3 For verification of materials, the reader is encouraged to consult the respective manufacturer's most recent publication on the official website or through contact with Customer Service.    © Copyright 2024 NAUTEL. All rights reserved. VERSION 2.0 2024-06-01 PAGE III...

  • Page 5: Table Of Contents

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL TABLE OF CONTENTS CONTENTS Contact Information Release Control Record Standard Warranty xiii Technical Assistance About This Manual xvii Technical Support xvii About Safety Electrical Hazards Lightning Hazards RF Hazards Toxic Hazards Other Hazards Safety Precautions Personal Safety...
  • Page 6 VS-TC-HP TECHNICAL INSTRUCTION MANUAL TABLE OF CONTENTS Safety Interlocks xxiv Ac Disconnect Switch xxiv Equipment Safety xxiv Electrostatic Protection xxiv Surge Protection xxiv Lightning Protection Physical Protection Earthquake Protection General Information Introduction About this Manual Transmitter Manuals Online Resources Mechanical Description...
  • Page 7 Tools/Test Equipment Stress Current Protection Controls and Indicators VS-TC-HP Front Panel Local Operation Using the Transmitter’s UI Enabling the VS-TC-HP in the Transmitter 3-10 Selecting the Active Transmitter 3-11 Selecting the Active Audio Source 3-13 Selecting the RF Transfer Mode...
  • Page 8 VS-TC-HP TECHNICAL INSTRUCTION MANUAL TABLE OF CONTENTS Setting the AES Changeover Level 3-27 Setting the AES Return/Recovery Level 3-29 Setting the RF Changeover Delay 3-31 Remote Operation 3-33 Using the CONSOLE Port 3-33 Upgrading Firmware 3-49 Requirements 3-49 Procedure 3-49...
  • Page 9 VS-TC-HP TECHNICAL INSTRUCTION MANUAL TABLE OF CONTENTS Common Abbreviations/Acronyms Electrical Schematics Component Values Graphic and Logic Symbols Reference Designations Unique Symbols Type of Inputs and Outputs Logic Level Convention Identifying Schematic Diagrams Mechanical Drawings Identifying Mechanical Drawings Content of Mechanical Drawings VERSION 2.0 2024-06-01...
  • Page 10 VS-TC-HP TECHNICAL INSTRUCTION MANUAL TABLE OF CONTENTS PAGE X VERSION 2.0 2024-06-01...

  • Page 11: Release Control Record

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL Release Control Record Issue Date Reason 2024-06-01 Hardware release 2 of VS-TC-HP (NAX280A). Compatible with various combinations of VS series, VX series, GV series and NVLT FM transmitter systems. Ancillary kit updated to 230-8105-01. VERSION 2.0 2024-06-01 PAGE XI...
  • Page 12 VS-TC-HP TECHNICAL INSTRUCTION MANUAL PAGE XII VERSION 2.0 2024-06-01...

  • Page 13: Standard Warranty

    If the Buyer receives a replacement module, as part of Nautel's module exchange program, the old module must be returned to Nautel within 30 days of receipt of the new module, at the buyers expense. If the old module is not received after 30 days, the customer will be invoiced. The buyer is responsible for installing the replacement/repaired module in the transmitter.
  • Page 14 Nautel shall have the right and shall be provided full access to investigate whether failures have been caused by factors beyond its control. 10. In no event shall Nautel be liable for any consequential damages arising from the use of this equipment.

  • Page 15: Technical Assistance

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL Technical Assistance Nautel's field service department provides telephone technical assistance on a 24 hour, seven days a week basis. Requests by other media (fax or e-mail) will be responded to the next working day if received after Nautel's normal working hours. Contact the appropriate field service centre: Nautel Limited...
  • Page 16 VS-TC-HP TECHNICAL INSTRUCTION MANUAL PAGE XVI VERSION 2.0 2024-06-01...

  • Page 17: About This Manual

    About This Manual Technical Support Nautel offers technical support to customers over the Internet and by telephone. Nautel’s customer support team will answer your questions and work with you to identify and resolve problems. For 24-hour technical support, call toll free at 1.877.628.8353 (in USA and Canada only) or call 1.902.823.5100 (international) or find us on the Internet at http://www.nautel.com.
  • Page 18 VS-TC-HP TECHNICAL INSTRUCTION MANUAL PAGE XVIII VERSION 2.0 2024-06-01...

  • Page 19: About Safety

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL About Safety All Nautel transmitters are designed to meet the requirements of EN60215, Safety Requirements for Radio Transmitters. The philosophy of EN60215 is that the removal of any cover or panel that can only be opened using a tool is a maintenance activity, and that any person performing a maintenance activity is expected to be trained for that activity.

  • Page 20: Lightning Hazards

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL Lightning Hazards Before opening the transmitter and touching internal parts, remove and solidly ground the antenna connection. WARNING: It is not enough to ground the antenna terminal with the antenna still connected. Even a small impedance in the ground strap will result in lethal voltages during a lightning strike.

  • Page 21: Safety Precautions

    Personnel must be familiar with the transmitter, so that they can avoid physical danger, and be aware of hazards to themselves and the equipment. Nautel offers a number of training courses covering the basic fundamentals of RF systems and transmitters, and the operation and maintenance of the transmitter. For more information about available courses and schedules, go to the Nautel website at http://www.nautel.com/Training.aspx, or...

  • Page 22: Voltage Awareness

    Operation of safety interlocks (if installed) First Aid Nautel does not offer first aid training, since the hazards associated with high voltage and RF energy are not specific to the transmitter. However, the customer should provide first aid training to all personnel who have access to the transmitter site.

  • Page 23: Marking Hazards

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL Marking Hazards Place warning signs close to any hazardous areas or systems (e.g., the feedline or the antenna system). Make the signs large enough that they cannot be missed. Provide signage in all languages used in the region.

  • Page 24: Safety Interlocks

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL The RF connection to the transmitter output can be a serious safety hazard. Connect a suitable antenna simulator during installation and commissioning. It is recommended that a switch be used to automatically connect the transmitter to the antenna system without human contact with the transmitting conductors.

  • Page 25: Lightning Protection

    (and to protect the rest of your site equipment and your personnel). For detailed information about lightning protection, see the Nautel Site Preparation Manual, available from your Nautel sales agent, or online from the Nautel website.
  • Page 26 VS-TC-HP TECHNICAL INSTRUCTION MANUAL PAGE XXVI VERSION 2024-06-01...

  • Page 27: General Information

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL GENERAL INFORMATION SECTION 1: GENERAL INFORMATION Introduction The VS-TC-HP Transfer Controller can be used in conjunction with two Nautel FM broadcast transmitters that are to be connected in a main-standby configuration (see Supported Transmitter Configurations, on page 1.3).

  • Page 28: Mechanical Description

    Dimensions and Clearances The VS-TC-HP is contained in a standard 19-inch rack mountable unit and is 3.5 inches (2RU, 7.7 cm) in height and 10.125 inches (25.7 cm) deep. Nautel recommends that you plan for 1 RU of air space between the VS-TC-HP and each transmitter if the transmitters are installed in a cabinet.

  • Page 29: Interfacing

    CONSOLE port for interface to a laptop or PC. All other interconnections and user interface connections are made at the rear of the VS-TC-HP, via various connector types that accept main and backup program inputs (XLR), remote interface connections (D-sub), transmitter interface connections (RJ45), external transfer switch connections (D-sub), and interlock connections (2-terminal connector).

  • Page 30: Technical Summary

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL GENERAL INFORMATION Technical Summary Table 1.1 provides a complete technical summary of the VS-TC-HP, including capabilities and specifications. Table 1.1: Technical Summary Category Parameter Specification Value/Conditions/Comments GENERAL Configuration Provides RF and audio switching logic and remote control...
  • Page 31 VS-TC-HP TECHNICAL INSTRUCTION MANUAL GENERAL INFORMATION Category Parameter Specification Value/Conditions/Comments CONTROL AND Remote Control/Status All remote I/O is provided on a female 25-pin D-sub connector. MONITORING Remote Inputs: (continued)  RF ON  RF OFF  TX1 TO AIR SELECT ...
  • Page 32 +24 V dc ± 10% POWER SUPPLY Input Voltage Redundant +24 V dc supplies provided by external ac-dc power supplies (Nautel Part # UG116) provided in the ancillary kit Power Consumption 3 W maximum USER-PROVIDED External RF Coaxial Transfer Switch Requirements, on page 2.5...
  • Page 33 VS-TC-HP TECHNICAL INSTRUCTION MANUAL GENERAL INFORMATION Category Parameter Specification Value/Conditions/Comments ENVIRONMENTAL Temperature Range 0ºC to +50ºC (32°F to 122ºF) Humidity Range 10% to 95% non-condensing Altitude 0 m to 3000 m (0 ft to 10,000 ft) Cooling Requirements Convection cooled (no fans) ...
  • Page 34 VS-TC-HP TECHNICAL INSTRUCTION MANUAL GENERAL INFORMATION PAGE 1.8 VERSION 2.0 2024-06-01...

  • Page 35: Preparation For Use & Installation

    SECTION 2: PREPARATION FOR USE & INSTALLATION This section contains information required to prepare the VS-TC-HP for use and to install it in a user- provided cabinet. Nautel recommends you incorporate all requirements in this section to ensure optimum reliability and performance. Topics include: ...

  • Page 36: Electrical Power

    Electrical Power The VS-TC-HP can operate from an external dc source [+24 ± 4 V (200 mA capable)] applied to either +24Vdc IN connectors on the rear panel. Power consumption is typically 3 W. Ac-dc power supplies (Nautel Part # UG116, provided in the ancillary kit) provide power for the VS-TC-HP.

  • Page 37: Transmitter Interface Connections

    17 (+15 V out) of the REMOTE I/O (A1J5) connector and pin 5 (+15 V in). The ancillary kit contains a 25-pin D-sub connector (Nautel Part # 230-5025) specifically designed for this purpose.
  • Page 38 RF coaxial switch. The ancillary kit contains two 24 V dc power supplies (Nautel Part # UG116) and two ac line cords (Nautel Part # JN25), to connect the 24 V dc power supplies to external ac power sources (between 90 to 264 V ac) PAGE 2.4...

  • Page 39: External Rf Coaxial Transfer Switch Requirements

    PREPARATION FOR USE & INSTALLATION External RF Coaxial Transfer Switch Requirements The VS-TC-HP interfaces with a user-provided RF coaxial switch that is located outside of the VS-TC-HP, and is provided by the user. Consider the following when selecting an RF coaxial switch: ...

  • Page 40: Remote Control Inputs

    External Switching Circuit Requirements External control circuits are interfaced to the VS-TC-HP through opto-couplers on the transfer control PWB (A1A1). The opto-couplers effectively buffer/isolate the external circuits and prevent any unwanted transients from affecting system operation.
  • Page 41 VS-TC-HP TECHNICAL INSTRUCTION MANUAL PREPARATION FOR USE & INSTALLATION When you use an external dc voltage (12 V Option 2 - Differential Input (External dc supply). to 18 V) as the source for a control function's opto-coupler, configure the control function's external switching circuit for a differential input.
  • Page 42 VS-TC-HP TECHNICAL INSTRUCTION MANUAL PREPARATION FOR USE & INSTALLATION Table 2.1: Remote Control Inputs CONTROL REMOTE I/O DESCRIPTION INPUT (A1J5) PIN RF On Asserting this input (0 V) enables the RF output of the transmitter being routed to the antenna system. The front panel’s RF ON integral LED will be on (green).

  • Page 43: Remote Alarm/Status Outputs

    Outputs that indicate stress thresholds for critical parameters have been exceeded or the status of operator controlled circuits are available on pins of the REMOTE I/O (A1J5) 25-pin, D-sub connector on the rear of the VS-TC-HP.  A switching device for each output provides a negative logic (current-sink-to-ground) output when the output is asserted and an open collector when it is not asserted.
  • Page 44 VS-TC-HP TECHNICAL INSTRUCTION MANUAL PREPARATION FOR USE & INSTALLATION Table 2.2: Remote Alarm and Status Outputs ALARM/STATUS REMOTE I/O DESCRIPTION OUTPUT (A1J5) PIN RF On Status When RF ON has been selected, this output will be a current-sink-to-ground (0 V). The output is open circuit when the system is in an RF OFF state.

  • Page 45: Installation

    Inspect all shipments for transit damage prior to acceptance. Installing the VS-TC-HP Install the VS-TC-HP in its intended cabinet or enclosure, in close proximity to the transmitters (if applicable), and secure it using four front panel screws. For VS and VX transmitter installations, allow 1 RU (1.75 inches) of clearance above and below each unit in the cabinet to ensure optimal convection...

  • Page 46: Installing Transmitter Interconnect Wiring And Cables

    If VX150 to VX2 transmitters are used in the transmitter system, a VS-TC to VX serial converter assembly (Nautel Part # 235-5650*) is required, one per transmitter. These will be supplied with the transmitter system. It connects between the XMTR LINK ports of the VS-TC-HP and each VX150 to VX2 transmitter. See Figure 2-4: on page 2.13...
  • Page 47 +15 V output (pin 17) and +15 V input (pin 5), use the D-sub connector connect to VX transmitters. VX3 to VX6 transmitters (Nautel Part # 230-5025) provided in the ancillary kit, which has a built- also require a serial splitter (Nautel Part # 235-5655), in shorting jumper between pins 5 and 17.
  • Page 48 VS-TC-HP TECHNICAL INSTRUCTION MANUAL XMTR LINK CONNECTION(S) AUDIO CONNECTION(S) Connect crossover Cat5 cable (Nautel Part # Connect audio cable (Nautel Part # UA270, UA381, from ancillary kit) between VS-TC-HP’s from ancillary kit) between VS-TC-HP’s XMTR LINK - TX1 and TX2 connector(s) and each AES OUT - TX1 and TX2 connector(s) and VS transmitter XMTR LINK connector.
  • Page 49 VX150 - VX2 TRANSMITTER REAR VIEW XMTR LINK CONNECTION(S) Connect VS-TC to VX serial converter assembly (Nautel Part # 235-5650*), provided for each VX transmitter, between VS-TC-HP’s XMTR LINK - TX1 and TX2 connector(s) (W1P1) and the VX XMTR LINK connector(s) (W2P2) VS-TC TO VX...
  • Page 50 VS-TC-HP TECHNICAL INSTRUCTION MANUAL VX3 TO VX6 TRANSMITTER REAR VIEW AUDIO CONNECTION(S) Connect audio cables (Nautel Part # UA270, from ancillary kit) between VS-TC-HP’s AES OUT - TX1 and TX2 connectors and each VX XMTR LINK CONNECTION(S) AES/EBU 1 connector.
  • Page 51 AUDIO CONNECTION(S) transmitter’s module control/interface PWB (A3). Connect audio cables (Nautel Part # UA270, from ancillary kit) between VS-TC-HP’s AES OUT - TX1 and TX2 connectors and the AES/EBU IN 1 connector on NOTE: Single rack GV transmitter shown for each GV transmitter’s exciter A.
  • Page 52 Connect audio cables (Nautel Part # UA270, from A3J16 Connect W23 or equivalent Cat5 cable (Nautel Part # ancillary kit) between VS-TC-HP’s AES OUT - TX1 and (W23P1) UA164, from ancillary kit) between the EXCTR/CTRL TX2 connectors and the AES/EBU IN 1 connector on connector (J16) on each transmitter’s module control/...

  • Page 53: Operating Instructions

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS SECTION 3: OPERATING INSTRUCTIONS This section includes operational information about the VS-TC-HP Transfer Controller, including:  Emergency Shutdown  External Safety Interlock, on page 3.2  Electrostatic Discharge Protection, on page 3.2  Controls and Indicators, on page 3.3 ...

  • Page 54: Complete Shutdown

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Complete Shutdown When the cause of the emergency shutdown dictates the need for a complete shutdown of the transmitter, disconnect (lock out) ac power for each transmitter. External Safety Interlock The external electrical interlock circuit is a protection circuit controlled by user determined, serially connected, normally open/held closed interlock switches.

  • Page 55: Tools/Test Equipment

    3.4 for detailed descriptions of the controls and indicators. : All of the functionality achieved by using the control and indicators on the VS-TC-HP’s front NOTE panel is also available using a PC and a terminal program such as PuTTY connected to the front panel...
  • Page 56 When both the LOCAL and REMOTE LEDs are on (green), the system is also enabled for remote control (i.e., local plus remote mode). Commands issued via the REMOTE I/O connector on the rear of the VS-TC-HP will have an effect on the transmitter system's operation. Local controls will also function. In the event that there are conflicting commands between the local and remote interfaces, the remote commands have control.
  • Page 57 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Button or LED Name Description MODE button Toggle switch that selects the maintenance status of the standby transmitter. The applicable LED will be on (green) to indicate the selection. This function is only NORMAL, applicable when the RF TRANSFER switch is set to MANUAL.

  • Page 58: Local Operation

    There are three methods to locally interface with the VS-TC-HP:  Using the controls and indicators on the VS-TC-HP’s front panel, described above.  Using the front panel UI of either of the associated NVLT, VS or VX transmitters, or the front panel UI of the controller module of the associated GV transmitters.

  • Page 59: Using The Transmitter's Ui

    The Transfer Ctrl menu is in the User Settings menu (see Figure 3.2). : For NVLT and GV series transmitter systems, the VS-TC-HP can only be enabled in single exciter NOTE mode. The VS-TC-HP is not compatible with dual exciter transmitters.
  • Page 60 WHEN TRANSFER CTRL IS ENABLED SCREEN 1 OF 2 SHOWN IMPORTANT! In order for RF output to be enabled, Transfer Control must be enabled and the transmitters set to RF ON when the transmitters are connected to the VS-TC-HP. PAGE 3.8 VERSION 2.0 2024-06-01...
  • Page 61 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS The following menus that pertain to the VS-TC-HP are available:  Enabling the VS-TC-HP in the Transmitter, on page 3.10  Selecting the Active Transmitter, on page 3.11  Selecting the Active Audio Source, on page 3.13 ...

  • Page 62: Enabling The Vs-Tc-Hp In The Transmitter

    Enable in the Transfer Ctrl menu and press the right arrow or the accept (checkmark) button. : For NVLT and GV series transmitter systems, the VS-TC-HP can only be enabled in single exciter NOTE mode. The VS-TC-HP is not compatible with dual exciter transmitters.

  • Page 63: Selecting The Active Transmitter

    : Making changes in this screen has the same effect as pressing the MAIN TRANSMITTER NOTE SELECT buttons ( TX1 or TX2 ) on the VS-TC-HP’s front panel. VX Transmitters: From the VX front panel UI, you can select the active transmitter (Transmitter 1 or Transmitter 2) for the system (i.e., the transmitter routed to the antenna system).
  • Page 64 Active Transmitter field in Figure 3.5 on page 3.8. : Making changes in this screen has the same effect as pressing the MAIN TRANSMITTER NOTE SELECT buttons ( TX1 or TX2 ) on the VS-TC-HP’s front panel. PAGE 3.12 VERSION 2.0 2024-06-01...

  • Page 65: Selecting The Active Audio Source

    : Making changes in this screen has the same effect as pressing the AUDIO SOURCE buttons NOTE ( MAIN or BACKUP ) on the VS-TC-HP’s front panel. VX Transmitters: From the VX front panel UI or the GV controller front panel UI, you can select the active audio source (Main AES or Backup AES) that will be applied to both transmitters.
  • Page 66 Audio Source field in Figure 3.5 on page 3.8. : Making changes in this screen has the same effect as pressing the AUDIO SOURCE buttons NOTE ( MAIN or BACKUP ) on the VS-TC-HP’s front panel. PAGE 3.14 VERSION 2.0 2024-06-01...

  • Page 67: Selecting The Rf Transfer Mode

    Press the accept (checkmark) button to save the change. Press cancel ( X ) to discard changes and return to the previous menu. : Making changes in this screen has the same effect as pressing the RF TRANSFER buttons ( AUTO NOTE or MANUAL ) on the VS-TC-HP’s front panel. VERSION 2.0 2024-06-01 PAGE 3.15...
  • Page 68 Use the front panel rotary knob to toggle between I (to enable) and O (to disable), then press to select and apply the setting. : Making changes in this screen has the same effect as pressing the RF TRANSFER buttons ( AUTO NOTE or MANUAL ) on the VS-TC-HP’s front panel. PAGE 3.16 VERSION 2.0 2024-06-01...

  • Page 69: Setting The Audio Transfer Mode

    Press the accept (checkmark) button to save the change. Press cancel ( X ) to discard changes and return to the previous menu. : Making changes in this screen has the same effect as pressing the AUDIO TRANSFER buttons NOTE ( AUTO or MANUAL ) on the VS-TC-HP’s front panel. VERSION 2.0 2024-06-01 PAGE 3.17...
  • Page 70 Use the front panel rotary knob to toggle between I (to enable) and O (to disable), then press to select and apply the setting. : Making changes in this screen has the same effect as pressing the AUDIO TRANSFER buttons NOTE ( AUTO or MANUAL ) on the VS-TC-HP’s front panel. PAGE 3.18 VERSION 2.0 2024-06-01...

  • Page 71: Selecting The Maintenance Mode

    Press the accept (checkmark) button to save the change. Press cancel ( X ) to discard changes and return to the previous menu. : Making changes in this screen has the same effect as pressing the MODE buttons ( NORMAL or NOTE MAINTENANCE ) on the VS-TC-HP’s front panel. VERSION 2.0 2024-06-01 PAGE 3.19...
  • Page 72 Use the front panel rotary knob to toggle between I (maintenance mode) and O (normal mode), then press to select and apply the setting. : Making changes in this screen has the same effect as pressing the MODE buttons ( NORMAL or NOTE MAINTENANCE ) on the VS-TC-HP’s front panel. PAGE 3.20 VERSION 2.0 2024-06-01...

  • Page 73: Setting System Rf Control

    Use the up and down buttons to toggle between RF ON and RF OFF. Press the accept (checkmark) button to save the change. Press cancel ( X ) to discard changes and return to the previous menu. : The VS-TC-HP sends ‘RF mute’ commands to the transmitters to enable or disable their RF NOTE outputs.
  • Page 74 Use the front panel rotary knob to toggle between I (enabled, RF on) and O (disabled, RF off), then press to select and apply the setting. : The VS-TC-HP sends ‘RF mute’ commands to the transmitters to enable or disable their RF NOTE outputs.

  • Page 75: Setting The Aes Changeover Delay

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Setting the AES Changeover Delay GV, NVLT or VS Transmitters: From the VS or NVLT front panel UI or the GV controller front panel UI, you can set the desired amount of time to wait before initiating an AES changeover after the main AES level falls below its preset threshold.
  • Page 76 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS VX Transmitters: From the VX front panel UI, you can set the desired amount of time to wait before initiating an AES changeover after the main AES level falls below its preset threshold. This value is only relevant when the audio transfer mode is set to automatic.

  • Page 77: Setting The Aes Return/Recovery Delay

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Setting the AES Return/Recovery Delay GV, NVLT or VS Transmitters: From the VS or NVLT front panel UI or the GV controller front panel UI, you can set the desired amount of time to wait before the main AES audio will be restored as the active source, upon its level exceeding the AES Return Threshold.
  • Page 78 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS VX Transmitters: From the VX front panel UI, you can set the desired amount of time to wait before the main AES audio will be restored as the active source, upon its level exceeding the AES Recovery Threshold. This value is only relevant when the audio transfer mode is set to automatic.

  • Page 79: Setting The Aes Changeover Level

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Setting the AES Changeover Level GV, NVLT or VS Transmitters: From the VS or NVLT front panel UI or the GV controller front panel UI, you can set the threshold below which an AES transfer will initiate (after the AES changeover delay period). This value is only relevant when the audio transfer mode is set to automatic.
  • Page 80 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS VX Transmitters: From the VX front panel UI, you can set the threshold below which an AES transfer will initiate (after the AES changeover delay period). This value is only relevant when the audio transfer mode is set to automatic.

  • Page 81: Setting The Aes Return/Recovery Level

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Setting the AES Return/Recovery Level GV, NVLT or VS Transmitters: From the VS or NVLT front panel UI or the GV controller front panel UI, you can set the threshold above which the main AES audio will be restored as the active source (after the AES return delay period). This value is only relevant when the audio transfer mode is set to automatic.
  • Page 82 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS VX Transmitters: From the VX front panel UI, you can set the threshold above which the main AES audio will be restored as the active source (after the AES recovery delay period). This value is only relevant when the audio transfer mode is set to automatic.

  • Page 83: Setting The Rf Changeover Delay

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Setting the RF Changeover Delay GV, NVLT or VS Transmitters: From the VS or NVLT front panel UI or the GV controller front panel UI, you can set the desired amount of time to wait before initiating an RF changeover after the main transmitter’s RF output falls below its preset low threshold.
  • Page 84 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS VX Transmitters: From the VX front panel UI, you can set the desired amount of time to wait before initiating an RF changeover after the main transmitter’s RF output falls below its preset low threshold. This value is only relevant when the RF transfer mode is set to automatic.

  • Page 85: Remote Operation

     Using discrete input/output wiring connected between a remote control site and the REMOTE I/O connector on the rear of the VS-TC-HP. See Section 2 - Preparation for Use and Installation for more details on the required control/monitor connections. Using the CONSOLE Port Connect the USB cable (Nautel Part # UB98) between the CONSOLE USB port on the front panel of the VS-TC-HP and an available USB port on a PC or laptop.
  • Page 86 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Figure 3.31: Device manager - COM Port Identification USB Serial Port Open the PuTTY serial terminal program. Set the Connection Type to Serial. Figure 3.32. Enter the COM port number identified in Step 3 in the Serial line field (e.g.,...
  • Page 87 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Press Enter to display the prompt to enter the serial menu. Type serialmenu to enter the menu. Type “serialmenu” to enter the menu Type “erialmenu” to enter the menu Type “rialmenu” to enter the menu Type “ialmenu”...
  • Page 88 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Enter the desired alpha character (e.g., F or f to Show Faults) to display the applicable sub-menu. The following sub-menus are available:  Show Faults sub-menu - see page 3.37  Show Meters sub-menu - see page 3.37 Configure Thresholds sub-menu - see page 3.38...
  • Page 89 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Show Faults sub-menu When you enter F (or f) as your choice in the Main Menu (see Figure 3.33 on page 3.35), a list of active alarms is displayed: Active alarms: Main AES Unlocked...
  • Page 90 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Configure Thresholds sub-menu When you enter C (or c) as your choice in the Main Menu (see Figure 3.33 on page 3.35), the following menu is displayed: Thresholds Menu =============== A) AES Changeover Delay (300.0 s)
  • Page 91 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS When you enter T (or t) as your choice in the Thresholds Menu , you AES Changeover Threshold: can set the threshold below which an AES transfer will initiate (after the AES changeover delay period).
  • Page 92 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS When you enter V (or v) as your choice in the Thresholds Menu , you can AES Return Threshold: set the threshold above which the main AES audio will be restored as the active source (after the AES return delay period).
  • Page 93 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Set Active Transmitter sub-menu When you enter T (or t) as your choice in the Main Menu (see Figure 3.33 on page 3.35), you can set the active transmitter for operation into the antenna system. The other transmitter will be routed to the dummy load.
  • Page 94 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Set Active Audio Source sub-menu When you enter A (or a) as your choice in the Main Menu (see Figure 3.33 on page 3.35), you can set the active audio source that will be applied to the transmitters. Selection options are ‘1’ (for main AES source) or ‘2’...
  • Page 95 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Set RF Transfer Mode sub-menu When you enter X (or x) as your choice in the Main Menu (see Figure 3.33 on page 3.35), you can enable or disable the automatic RF transfer mode for the system. Selection options are ‘y’ (to enable automatic RF transfer) or ‘n’...
  • Page 96 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Set Audio Transfer Mode sub-menu When you enter Y (or y) as your choice in the Main Menu (see Figure 3.33 on page 3.35), you can enable or disable the automatic AES audio transfer status for the system. Selection options are ‘y’ (to enable automatic audio transfer) or ‘n’...
  • Page 97 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Set Maintenance Mode sub-menu When you enter N (or n) as your choice in the Main Menu (see Figure 3.33 on page 3.35), you can enable or disable the RF output of the transmitter being routed to the dummy load. This is typically enabled to allow maintenance or testing of the standby, or off-air transmitter.
  • Page 98 E) Reset CPU into NCodeUploader mode Q) Quit Enter your choice: : The VS-TC-HP sends ‘RF mute’ commands to the transmitters to enable or disable their RF NOTE outputs. Both transmitters must be configured for RF On to operate in the main-standby system.
  • Page 99 When you enter D (or d) as your choice in the Main Menu (see Figure 3.33 on page 3.35), you can restore the VS-TC-HP to its factory default state. Selection options are ‘y’ (to restore) or ‘n’ (to maintain current settings) (see below). Enter your choice: d e.g., enter y to restore...
  • Page 100 3.35), you can reset the VS-TC-HP’s CPU into NCodeUploader mode. This is typically done to perform a firmware (software) upgrade to the VS-TC-HP. Selection options are ‘y’ (to proceed) or ‘n’ (to return to the Main Menu) (see below). : Proceeding with this function will take the transmitter system off-air.

  • Page 101: Upgrading Firmware

    Perform the following steps to upgrade the firmware: Connect the USB cable (Nautel Part # UB98) between the CONSOLE USB port on the front panel of the VS-TC-HP and an available USB port on a PC or laptop. If necessary, follow normal Windows Update procedures to install a driver for the USB device.
  • Page 102 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Figure 3.34: Serial Menu Console Screen Step 5 Step 6 Step 7 Type "serialmenu" (without the quotes) to activate the console. From the Main Menu, type 'E' and press Enter . Type 'Y' and press Enter to confirm you want to proceed. You should see the message “Entering NCodeUploader mode.
  • Page 103 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Figure 3.35: NCodeUploader Main Screen Figure 3.36: NCodeUploader - Settings Screen VERSION 2.0 2024-06-01 PAGE 3.51...
  • Page 104 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS Figure 3.37: NCodeUploader - Successful Connection Screen Figure 3.38: Upload DSP Firmware Screen PAGE 3.52 VERSION 2.0 2024-06-01...
  • Page 105 VS-TC-HP TECHNICAL INSTRUCTION MANUAL OPERATING INSTRUCTIONS 14. Ensure the checkboxes are checked exactly as shown in Figure 3.38 on page 3.52. Click the Browse button for the Program Code File. Select the file, which will have the naming convention VS-TC_NAPC166_VX.Y.Z.A.hex.
  • Page 106 Figure 3.42 will display. The front panel LEDs on the VS-TC-HP should turn on after a few seconds. Click OK. Figure 3.42: NCode Uploader DSP Operational 19. Close NCodeUploader and remove the USB cable. The firmware upgrade is complete. The VS-TC-HP may need a few seconds to reboot.

  • Page 107: Troubleshooting

    VS-TC-HP. Identifying a Fault There are several ways to monitor the VS-TC-HP’s operational status and check if a fault is occurring:  Check the Alarms menu of the associated NVLT, VS or VX transmitter front panel UI or the GV transmitter’s controller front panel UI.

  • Page 108: Types Of Faults

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL TROUBLESHOOTING Types of Faults Table 4.1 lists the VS-TC-HP faults that may appear on any of the local or remote monitoring methods described in Identifying a Fault, on page 4.1, as well as brief descriptions and suggested troubleshooting action.
  • Page 109 Open connected to the VS-TC-HP. TX 1 Comm This fault occurs if TX 1 has not communicated with the VS-TC-HP within the past two (2) Fail seconds. Fault is active regardless of the automatic RF transfer state (enabled or disabled).

  • Page 110: Checking Cable Connections

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL TROUBLESHOOTING Checking Cable Connections Verify that the VS-TC-HP’s internal cables are connected properly as follows: Remove the VS-TC-HP’s top cover. Inspect the cables and connections. If a connector is unseated or disconnected, reconnect it to its...

  • Page 111: Theory Of Operation

    RF power stages of both transmitters by interrupting their interlock (RF mute) circuits and causing an RF on/off command. The VS-TC-HP allows local or remote selection of the transmitter to be designated as the main (on-air) transmitter. In operation, an external RF coaxial switch routes the RF output of the main transmitter to the antenna system and routes the RF output of the standby transmitter to the station test load.

  • Page 112: Vs-Tc To Vx Serial Converter Assembly (Units 4 And 5)

    Figures SD-2, SD-3 and SD-6) is installed between the appropriate XMTR LINK port(s) on the VS-TC-HP and the XMTR LINK port(s) on the VX transmitter(s). This assembly performs a serial RS485-to-RS422 conversion to allow connection compatibility for the VX transmitter(s).

  • Page 113: Transfer Control Pwb (A1)

    24 V dc inputs are ORed and converted to various low level dc supplies (15 V, 3.3 V, 2.5 V and 1.8 V) used throughout the VS-TC-HP. Only one 24 V dc input is required for operation. If operating the VS-TC-HP with VS, VX, GV or NVLT series transmitters, one or two external ac-dc power sources are required.

  • Page 114: Button/Led Pwb (A2)

    (to antenna and test load). All switches and LEDs protrude through the VS-TC-HP’s front panel. The CONSOLE port provides a means to connect serially (USB to RS-232 interface) to the VS-TC-HP. This allows the ability, using a terminal program (e.g., PuTTY), to configure the VS-TC-HP.
  • Page 115 VS-TC-HP TECHNICAL INSTRUCTION MANUAL THEORY OF OPERATION When transmitter 1 to antenna operation is selected, the Transmitter 1 to Antenna Operation. transfer control PWB applies 24 V to the RF coaxial transfer switch's + POS1 input (CONTROL/STATUS pin 1 in this example). The RF coaxial switch will be configured for position 1 and the output of transmitter 1 will be routed to the antenna via port 1.
  • Page 116 VS-TC-HP TECHNICAL INSTRUCTION MANUAL THEORY OF OPERATION PAGE 5.6 VERSION 2.0 2024-06-01...

  • Page 117: Parts List

    To locate the information for a specific part, the assigned reference designation for the part must be known. In addition, the Nautel nomenclature (e.g., NAX280) assigned to the assembly containing the part or the full reference designation, including the reference designation of all higher assemblies, must be known.

  • Page 118: Description Column

    This number is Nautel's drawing number for Nautel manufactured parts, Nautel's configuration control number for assemblies that are under configuration control management, or Nautel's inventory management number for purchased parts. When a Nautel configuration control number (e.g. NAPC*) is shown in this column, its sub-assembly reference designation items are listed below it.
  • Page 119 Page 1 of 4 StockCode: Transfer Control Assy, VS-TC-HP, Description: Component Lvl, StockCode Description Reference Designation 200-5120 USB Mod, Programmed VS-TC-HP (Handbook) 230-5104 Cableset Assy, VS-TC-HP JP51 Conn, Recept, Ribbon Cable, 40 pin W2P1, W2P2 JQ17 Conn, Contact, Pin, HDP-20 Strip...
  • Page 120 NAX280A Page 2 of 4 StockCode: Transfer Control Assy, VS-TC-HP, Description: Component Lvl, StockCode Description Reference Designation HAJ66 Terminal, SMT, Test Point, PWB TP01, TP02 JF47 Conn, Header,Square Post,Gold, Dual,40-pin JQ15 Conn, Post Shunt, 2 Pos, .10 C entreline JQ16...
  • Page 121 NAX280A Page 3 of 4 StockCode: Transfer Control Assy, VS-TC-HP, Description: Component Lvl, StockCode Description Reference Designation RFFS29 Resistor,SMT,MF,182ohms,1%, 1/10W,0603 R091, R101 RFFS30 Resistor, SMT, MF, 221ohms, 1%, 1/10W, 0603 R001, R004 RFFS34 Resistor,SMT,MF,475ohms,1%, 1/10W,0603 R092, R094, R102, R105 RFFS37...
  • Page 122 NAX280A Page 4 of 4 StockCode: Transfer Control Assy, VS-TC-HP, Description: Component Lvl, StockCode Description Reference Designation UX83 IC,SMT,2.5V Reference,0.1%,SOT -23-6 XFPS03 Crystal,SMT,Fund,Par Res, 3.6864MHz,Comm NAPX49 Button/LED PWB, VS-TC CCFS52 Cap, SMT, Ceramic, 0.1uF, 10%, 25V X7R, 0603 C01, C02, C04 CX33 Cap,SMT,Ceramic,4.7uF,20%,10V, X5R,1206...

  • Page 123: Electrical Schematics

    Resistor power ratings are not shown when less than 0.5 W Unidentified diodes are part number BAS21HT1 (Nautel Part # QDRS01) 24V Unidentified transient suppressors are part number 0603E SDA-TR1 (Nautel Part # QR70) Graphic and Logic Symbols The graphic symbols used on electrical schematics are in accordance with IPC-2612-2010 - Sectional Requirements for Electronic Diagramming Documentation (Schematic and Logic Descriptions).

  • Page 124: Unique Symbols

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL ELECTRICAL SCHEMATICS Unique Symbols Nautel uses unique symbols on electrical schematics to describe logic (two-state) signals. These signals differ from single-state signals or analog signals that may have multiple values. Type of Inputs and Outputs On electrical schematics, names used to describe logic (two-state) input and output signals are prefixed with a # symbol.
  • Page 125 UNIT 1 XMTR 1 AUDIO (+) XMTR LINK TX (+) MAIN AES AUDIO SHIELD A1J6 XMTR LINK XMTR LINK TX (-) XMTR LINK RX (+) A1J3A AUDIO (-) A1J1 XMTR LINK RX (-) XMTR LINK A1J3A A1J1 AUDIO (+) BACKUP AES AUDIO SHIELD A1J7 AUDIO (-)
  • Page 126 UNIT 4 VS-TC TO VX SERIAL CONVERTER ASSY VS-TC TO VX VX TO VS-TC SERIAL ADAPTER SERIAL ADAPTER RS485-RS422 GENDER (RS422) (RS485) SERIAL CONVERTER CHANGER UNIT 5 W1P1 W1P2 W2P1 W2P2 RS422 TX+ BLUE RS422 TX+ RS485 D+ SERIAL SPLITTER PART OF VXHP UNIT 4...
  • Page 127 UNIT **** VS-TC TO VX SERIAL CONVERTER ASSY VS-TC TO VX VX TO VS-TC SERIAL ADAPTER SERIAL ADAPTER RS485-RS422 GENDER (RS422) (RS485) SERIAL CONVERTER CHANGER W1P1 W1P2 W2P1 W2P2 RS422 TX+ BLUE RS422 TX+ RS485 D+ UNIT 6 RS422 TX- ORANGE RS422 TX- RS485 D-...
  • Page 128 "EXCITER LINK" (A4A1J1) CONNECTION. FOR GV TRANSMITTERS, THE EXISTING EXCITER B CABLE AT LOAD # SUMMARY ALARM - MODULE CONTROL/INTERFACE PWB "EXCTR B" (A3J18) CONNECTOR SHOULD BE REMOVED AND TIED BACK IN ORDER TO PERMIT CONNECTION TO THE VS-TC-HP. # SWITCH FAULT - # RF ON - # RF OFF -...
  • Page 129 TO DUMMY MODULE CONTROL/INTERFACE PWB "EXCTR B" (A3J18) CONNECTOR SHOULD BE REMOVED AND LOAD # SUMMARY ALARM - TIED BACK IN ORDER TO PERMIT CONNECTION TO THE VS-TC-HP. # SWITCH FAULT - # RF ON - # RF OFF -...
  • Page 130 CONTROL/INTERFACE PWB "EXCTR/CTRL" (A3J16) CONNECTION AND THE CONTROLLER ASSEMBLY "EXCITER LINK" (A4A1J1) CONNECTION. FOR GV TRANSMITTERS, THE EXISTING EXCITER B CABLE AT MODULE CONTROL/INTERFACE PWB "EXCTR B" (A3J18) CONNECTOR SHOULD BE REMOVED AND TIED BACK IN ORDER TO PERMIT CONNECTION TO THE VS-TC-HP. UNIT 1 GV/NVLT...
  • Page 131 XMTR LINK RX (-) - COMMON + POS2 SPARE TO/FROM IND POS (1) EXTERNAL RF COAX SWITCH IND COMMON IND POS (2) INTERLOCK INTERLOCK 230-5100-01-SCH01 Iss. A Figure SD-7: Electrical Schematic - NAX280 VS-TC-HP Transfer Controller VERSION 2.0 2024-06-01 SD-7...
  • Page 132 74LVC257APW U9:B U9:A MAIN 1210 AES IN MUTE RX1+ AGND TP12 RX1- BGND U3:A DGND1 DGND2 +3.3V DGND3 VDD33 +1.8V VDD18 +3.3V SELECT SRC4382IPFB TP11 TP16 MOSI CDIN MISO 10.0K CCLK #SRC1_CS- I2S_LRCK LRCKA I2S_BCK BCKA TP13 I2S_BCK TO SHEET 2 TP10 +3.3V RXCKI...
  • Page 133 +3.3V +3.3V 4750 4750 U15:G +15V +15V-E +3.3V # RF ON STATUS - RESET 1210 U26:A 1210 U14:A 0.01 12.1 CR10 0.01 0.01 10.0K MOCD223-M 10.0K MOCD223-M MC74HC595AD U15:F PART 3 OF 4 # SYSTEM INTLK # LOCAL/REMOTE # RF ON - OPEN - (TOGGLE) - 0.01...
  • Page 134 +3.3V R120 4750 U17:A +15V # LOCAL LED - R119 1210 R121 U35:A U17:B CR22 0.01 10.0K MOCD223-M # REMOTE LED - IND POS (1) U17:C # AUTO RF TRANSFER LED - IND COMMON +3.3V U17:D # MAIN RF TRANSFER LED - R125 U17:G U12:G...
  • Page 135 LOCAL TX1 TO DUMMY LOAD +3.3V # LOCAL - +3.3V # TX1 TO DUMMY GREEN - LOCAL/ +3.3V 23 REMOTE # LOCAL/REMOTE (TOGGLE) - VCCIC # TX1 TO DUMMY RED - REMOTE RESET AUTO/MAN # REMOTE - +3.3V 4750 RF TRANSFER # AUTO/MANUAL RF TX1 TO ANTENNA 10.0K...

  • Page 136: Mechanical Drawings

    VS-TC-HP TECHNICAL INSTRUCTION MANUAL MECHANICAL DRAWINGS SECTION 8: MECHANICAL DRAWINGS This section contains mechanical drawings for the VS-TC-HP Transfer Controller and its assemblies. Refer to Table 8.1 on page 8.1 for an itemized list. Assembly detail drawings for assemblies and modules that have separate manuals are not included.
  • Page 137 VS-TC-HP TECHNICAL INSTRUCTION MANUAL MECHANICAL DRAWINGS PAGE 8.2 VERSION 2.0 2024-06-01...
  • Page 138 REAR VIEW CAPACITIVE FILTER ADAPTER TRANSFER CONTROL PWB TOP VIEW (cover removed) BUTTON/LED PWB (behind front panel) FRONT VIEW Figure MD-1: Assembly Detail - NAX280A VS-TC-HP Transfer Controller VERSION 2.0 2024-06-01 MD-1...
  • Page 139 SYSTEM INTLK EXTERNAL INTERFACE TP14 +24VDC IN TP22 TP24 +24V-B +24V-A BCKP MAIN CR15 R128 R137 CR25 CR26 A - TX1 B - TX2 TP12 R101 R105 CR23 CR27 TRANSFER CONTROL NAPC166 R114 TP10 TP13 R132 R122 R138 SER. +1.8V R111 R118 R134...
  • Page 140 MAIN BUTTON/LED AUDIO AUDIO XMTR SOURCE TRANSFER SELECT TRANSFER CONTROL NAPX49 RF OFF RF ON DS15 DS13 SER. MODE (U/S) (U/S) (U/S) (U/S) (U/S) (U/S) MAIN AUTO NORMAL AUTO LOCAL DS10 (U/S) (U/S) (U/S) (U/S) (U/S) (U/S) (U/S) (U/S) (U/S) (U/S) DS12 DS11...
  • Page 142 Phone: +1.902.823.3900 or Fax: +1.902.823.3183 Nautel Inc. 201 Target Industrial Circle Bangor, Maine USA 04401 Phone: +1.207.947.8200 Fax: +1.207.947.3693 Customer Service (24-hour support) +1.877.628.8353 (Canada & USA only) +1.902.823.5100 (International) Email: support@nautel.com Web: www.nautel.com © Copyright 2024 NAUTEL. All rights reserved.

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