Nautel VS1 Operation And Maintenance Manual
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Nautel VS1 Operation And Maintenance Manual

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Download this manual See also: Troubleshooting Manual, Operation & Maintenance Manual
VS1 Transmitter
Operations and Maintenance
Manual
Document: VS1-OPS-MAINT
Issue:
0.3 2010-11-24
Status:
Preliminary

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Summary of Contents for Nautel VS1

  • Page 1 VS1 Transmitter Operations and Maintenance Manual Document: VS1-OPS-MAINT Issue: 0.3 2010-11-24 Status: Preliminary...
  • Page 3 The comparisons and other information provided in this document have been prepared in good faith based on publicly available information. The reader is encouraged to consult the respective manufacturer's most recent published data for verification. © Copyright 2010 NAUTEL. All rights reserved.

  • Page 5: Table Of Contents

    VS1 Operations and Maintenance Manual Table of contents Contents Release control record About this manual About safety xiii Safety precautions Description Ac-dc power stage Exciter/control stage RF drive stage RF power stage Operating the transmitter User interface Viewing transmitter log...
  • Page 6 VS1 Operations and Maintenance Manual Table of contents Setting pilot sample level 2-92 Front panel display settings 2-93 Configure test signal generator 2-95 Setting station ID parameters 2-97 Using an external 10 MHz input 2-99 Routine maintenance Scheduled maintenance Replacing a damaged air filter...

  • Page 7: Release Control Record

    VS1 Operations and Maintenance Manual Release control record Issue Date Reason 2010-07-20 Initial release of manual 2010-10-15 Updated Table 3.1: Expected Transmitter Meter Readings 2010-11-24 Incorporated various minor changes Issue 0.3 2010-11-24 Page vii...
  • Page 8 VS1 Operations and Maintenance Manual Page viii Issue 0.3 2010-11-24...

  • Page 9: About This Manual

    VS1 Operations and Maintenance Manual About this manual This manual provides technical information needed when operating, maintaining and troubleshooting an VS1 transmitter. This manual is intended for use by transmitter operators and field technicians. Using this manual If you are responsible for configuring or operating a transmitter, see Section 2, “Operating the...
  • Page 10 Tip: When you have completed a task or a step, put a checkmark beside the step number. 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.
  • Page 11 The Nautel website provides useful resources to keep you up to date on your VS1. Nautel User Group (NUG) The website includes a special section that customers can log into in order to access the Nautel customer newsletter, product manuals, frequently asked questions (FAQ), information sheets, and information about field upgrades.
  • Page 12 VS1 Operations and Maintenance Manual Page xii Issue 0.3 2010-11-24...

  • Page 13: About Safety

    VS1 Operations and Maintenance 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 14 VS1 Operations and Maintenance 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 15: 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,...
  • Page 16 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 per- sonnel who have access to the transmitter site.
  • Page 17 VS1 Operations and Maintenance 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 18 (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 19: Description

    Description Section 1: Description Refer to the functional block diagram: Block Diagram - VS1 Transmitter - see page 1-7. This section provides a high-level description of the transmitter’s key sections. The transmitter circuitry is subdivided into four basic stages: •...
  • Page 20 VS1 Operations and Maintenance Manual Description Power supply module See also electrical schematic Figure SD-1 . Power supply module U2 converts the ac input voltage to a regulated dc supply (PA volts) for the PA PWBs (A6 through A9) in the RF power stage. The power supply module is rated for a nominal 2000 W and provides an output voltage between 7 and 53 V (typically 48 V).

  • Page 21: Exciter/Control Stage

    VS1 Operations and Maintenance Manual Description Exciter/control stage See also electrical schematic Figure SD-1 . Detailed schematics are not included in the Troubleshooting Manual. The exciter/control stage performs many critical functions for the transmitter. The primary component of this stage is the exciter/control PWB (A1).

  • Page 22: Rf Drive Stage

    VS1 Operations and Maintenance Manual Description • provides local and remote interfacing for the transmitter. Local interfacing is performed via the front panel display (U4) - a 4 x 20 character LCD display - and its adjacent keypad. The UI contains a menu-based series of pages that serve specific functions. Similar interfacing, as well as more advanced functionality, is available on a remotely accessed AUI.
  • Page 23 VS1 Operations and Maintenance Manual Description Combiner PWB See Figure SD-2 . The combiner PWB (A10) accepts the RF outputs of the four PA PWBs and combines them into a single output. This single output is applied to the low pass filter PWB (A11).
  • Page 24 VS1 Operations and Maintenance Manual Description Page 1-6 Issue 0.3 2010-11-24...
  • Page 25 VS1 Operations and Maintenance Manual Figure 1.1: Block Diagram - VS1 Transmitter BLOCK DIAGRAM - VS1 AUDIO USER INTERFACE PROCESSOR (OPTIONAL) OUTPUT FWD PWR COMBINER OUTPUT REFLD PWR INTERFACE PA TEMP 2 HEATSINK TEMP PA TEMP 1 HEATSINK TEMP SENSOR 2...

  • Page 26: Operating The Transmitter

    VS1 Operations and Maintenance Manual Operating the transmitter Section 2: Operating the transmitter This section provides information about operating the VS1 transmitter: • User interface - see page 2-7 – Front panel UI - see page 2-7 • Turning RF on and off - see page 2-8 •...
  • Page 27 VS1 Operations and Maintenance Manual Operating the transmitter • Changing hardware settings - see page 2-77 – Configuring ARM watchdog - see page 2-78 – Calibrating exciter TCXO - see page 2-79 – Calibrating audio inputs - see page 2-81 –...
  • Page 28 FRONT PANEL UI Top Level First Time Main Menu Setup Screens Status Screen displayed during initial turn-on only RF On/Off Select Preset User Settings Edit Presets (see Fig. 2-2) Remote I/O Set Clock Local/Remote Network Settings Pilot Sample View Status LCD Settings View Alarms View Meters...
  • Page 29 FRONT PANEL UI Select Preset to Edit Presets Edit or Create New Preset RDS Settings Enable Data Source Output Power Baud Rate RDS Level RDS Phase Frequency PS Name PI Code Program Type Main Audio Source Traffic Flags Stereo Mode Music/Speech Preemphasis DI Code...
  • Page 30 REMOTE AUI (Return to) HOME PAGE Menu Home Presets General Main Audio Status (Transmitter Status) Other Audio System Controller Review Exciter Hardware Exciter TCXO Audio Input Calibration Miscellaneous User Accounts Username Password User Role Software Network Setup Upgrade Software Email Configuration Notifications Upload Files Audio Player...
  • Page 31 VS1 Operations and Maintenance Manual Operating the transmitter User interface The user can interface with the VS1 using one of two methods: • Locally, using the front panel display and navigational buttons (see “Front panel UI”). • Remotely, via a LAN connection, using the advanced user interface (AUI) pages (see “Advanced user interface”...
  • Page 32 VS1 Operations and Maintenance Manual Operating the transmitter Main menu This main menu is the starting point for navigating through the UI screens. See Table 2.1 on page 2-9 for a list of screens and their basic functions. Figure 2.5: Main Menu...
  • Page 33 VS1 Operations and Maintenance Manual Operating the transmitter Front panel UI screens Table 2.1 defines the available front panel display screens. Table 2.1: Front Panel UI Screens UI Screen Function See Page First Time Setup Screens Guides the user through initial setup of the transmitter.
  • Page 34 VS1 Operations and Maintenance Manual Operating the transmitter Table 2.1: Front Panel UI Screens UI Screen Function See Page User Settings - Edit Presets Edit the selected preset’s audio loss functionality, such as page 2-54 - Audio Loss enable/disable, setting threshold, setting timeout period, setting resulting action and selecting a backup preset.
  • Page 35 VS1 Operations and Maintenance Manual Operating the transmitter Table 2.1: Front Panel UI Screens UI Screen Function See Page View Status - Clear Log Clear the transmitter’s events log. page 2-24 View Status - View SW View the versions of software installed on the transmitter.
  • Page 36 2.6) is available via remote connection only. To access the AUI, you need a PC (and a web browser) that is connected to the VS1 - directly or through a switch - via its rear panel LAN connection (A1J8A). The AUI has a wide range of displays, including: –...
  • Page 37 Operating the transmitter The top banner is permanent on all AUI pages and includes: From any AUI page, click the Nautel logo to return to the Home page. Nautel Logo Displays day, month, year and current time. Click on date or time to shortcut to the Date &...
  • Page 38 (see Figure 2.3). Figure 2.3: AUI Login Menu Enter your User name (default is “Nautel”) and Password (default is blank), then click Submit . If you do not have a user account, see “Setting user accounts” on page 2-59.
  • Page 39 VS1 Operations and Maintenance Manual Operating the transmitter AUI pages Table 2.2 defines the available AUI pages. Table 2.2: AUI Pages AUI Page Function See Page Home View meters, tool menu panels, choose options and page 2-12 navigate to other pages.
  • Page 40 VS1 Operations and Maintenance Manual Operating the transmitter Menu page From the home page, click the Menu button to view the Menu page (see Figure 2.4). From this page, you can select one of the following sub-menus: Figure 2.4: Menu Page Select Home to return to the home page (see Figure 2.6 on page...
  • Page 41 VS1 Operations and Maintenance Manual Operating the transmitter Select User Accounts to access a page that displays a list of users with access to the AUI and, depending on permission level, allows editing of user accounts (see “Setting user accounts” on page 2-59).

  • Page 42: Viewing Transmitter Log

    “Managing the log” on page 2-12), the events displayed may be filtered by the originating device (Controller, Exciter or All), and the time of occurrence. Refer to the VS1 Troubleshooting Manual to cross-reference the alarm name to possible causes and troubleshooting tips. Page 2-18...
  • Page 43 (e.g., if you select a timespan of 10 Minutes , then the meter indications will span from 5 minutes before the event to 5 minutes after the event). Managing the log You can manage the VS1 AUI’s events log by clicking on the Log Manager button (see Figure 2.6).
  • Page 44 VS1 Operations and Maintenance Manual Operating the transmitter Filter You can filter transmitter events based on their origin or date by clicking the Filter button in the log manager (see Filter - Select Logs - see Figure 2.7). Click the Device Type drop-down arrow, and select the desired device type to filter events based on the type selected.
  • Page 45 VS1 Operations and Maintenance Manual Operating the transmitter Copy You can create a copy of all the logs in the selected list (copied to the remote user’s computer clipboard) by clicking on the Copy button in the log manager (see Copy Logs - see Figure 2.8).
  • Page 46 VS1 Operations and Maintenance Manual Operating the transmitter Statistics You can view statistical information on the events being displayed by clicking on the Statistics button in the log manager (see Log Statistics - see Figure 2.10). Note: Only the events subject to the user-defined filtering parameters will be displayed on the Log Statistics screen.
  • Page 47 VS1 Operations and Maintenance Manual Operating the transmitter Legend Click on the Legend button in the log manager (see Figure 2.11) to display a legend that describes the meaning of the symbols shown in the State and Severity columns of the Log page.
  • Page 48 When you select View Status -> Alarms or View Status -> View Log from the Main Menu (see Figure 2.12), you can view various active or logged events, respectively, of the VS1. These parameters are displayed on multiple pages of Meters screens.

  • Page 49: Viewing Tool Menu Panels

    VS1 Operations and Maintenance Manual Operating the transmitter Viewing tool menu panels The VS1 AUI provides five tool menu panels that you can choose to display on the AUI home page (see Figure 2.13). Up to four tool menu panels can be displayed at one time, including a spectrum analyzer.
  • Page 50 VS1 Operations and Maintenance Manual Operating the transmitter Table 2.3: Tool Menu Panels Tool Menu Description Reference Spectrum Analyzer Displays a spectrum analyzer, capable of monitoring various page 2-27 RF sections of the transmitter, including the RF output. EQ Frequency Displays the frequency response of the modulator’s EQ filter.
  • Page 51 VS1 Operations and Maintenance Manual Operating the transmitter Figure 2.15: Spectrum Analyzer Peak Cog Spectrum analyzer Figure 2.15. The carrier level is normalized to its unmodulated carrier level at 0 dB. Graph center is always at the carrier frequency. Click on the panel to display a cursor in the approximate area. The cursor position (frequency and amplitude) is noted in the upper, right-hand corner of the panel.
  • Page 52 Operating the transmitter Equalizer screens The VS1’s exciter includes a fixed equalizer to optimize audio perfomance. There are three menus available in the tool panel - EQ Frequency , EQ Impulse Response and EQ Filter Delay . Coefficients are selected based on your channel frequency. All frequencies shown are relative to the channel frequency.
  • Page 53 VS1 Operations and Maintenance Manual Operating the transmitter Figure 2.17: EQ Impulse EQ impulse response Figure 2.17. This panel displays the impulse response of the modulator’s EQ filter. Click on the panel to display a cursor in the approximate area. The cursor position (magnitude and time) is noted in the upper, right-hand corner of the panel.
  • Page 54 VS1 Operations and Maintenance Manual Operating the transmitter Figure 2.18: EQ Filter Delay EQ filter delay Figure 2.18. This panel displays the delay of the modulator’s EQ filter across its bandwidth. Click on the panel to display a cursor in the approximate area. The cursor position (delay and frequency) is noted in the upper, right-hand corner of the panel.
  • Page 55 VS1 Operations and Maintenance Manual Operating the transmitter Figure 2.19: Lissajous Plots L and R mode I and Q mode Lissajous plot Figure 2.19. This panel displays a Lissajous plot that represents either left and right audio content or a representation of the FM modulated signal (I and Q). I and Q will be automatically selected when using MPX as the main audio source.

  • Page 56: Viewing Real-Time Meters

    Using the AUI The VS1’s AUI can display many metered parameters on the right hand side of its home page. To view all the meter options, click the Meters button on the right-hand side of the AUI. This opens the...
  • Page 57 VS1 Operations and Maintenance Manual Operating the transmitter Each meter is a colour-coded bar with minimum and maximum values. The meter’s current value is indicated by an arrow on the colour-coded bar, as well as a displayed value below the meter. A parameter value in the green section of a meter bar indicates the parameter is within the range for normal operation.
  • Page 58 When you select View Status -> View Meters from the Main Menu (see Figure 2.22) you can view various metered parameters of the VS1. These parameters are displayed as a list on the View Meters screen. Note: This screen is for viewing purposes only and does not offer the same level of analytical features as the AUI’s System Review page (see...

  • Page 59: Setting Time And Date

    Operating the transmitter Setting time and date The VS1’s internal clock uses a backup battery, and therefore maintains an accurate time and date, even during power outages. The time and date needs to be set when the transmitter is first installed, or after a power outage if the backup battery has failed.
  • Page 60 VS1 Operations and Maintenance Manual Operating the transmitter Using the front panel When you select User Settings -> Set Clock from the Main Menu menu (see Figure 2.24) you can set the current time and date. The time appears on the top line of the top level screen (see Figure 2.4...

  • Page 61: Managing Presets

    VS1 Operations and Maintenance Manual Operating the transmitter Managing presets Presets contain operational data (power level, frequency, mode, program input characteristics) for the transmitter. You can create presets and manage their various settings. You can manage presets using the remote AUI (see “Using the...
  • Page 62 VS1 Operations and Maintenance Manual Operating the transmitter When you first enter the Presets page, the current preset is displayed. If the Loading presets. current preset is not the preset you want to work with, use the Load button on the left side of the Presets page to call up a window containing a list of alternate presets.
  • Page 63 VS1 Operations and Maintenance Manual Operating the transmitter SCA tab: • MPX SCA (select Enabled or Disabled). If Enabled, enter: – Input Level (enter value in Vpp) • SCA Reduction (enter percentage) • Internal SCA1 or SCA2 (select Enabled or Disabled). If Enabled, enter: –...
  • Page 64 VS1 Operations and Maintenance Manual Operating the transmitter • AGC Limiter (select Enabled or Disabled). If Enabled, enter: – AGC Limit (enter percentage) – Time Constant (enter value in ms) • Two Slope Limiter (select Enabled or Disabled). If Enabled, enter: –...
  • Page 65 VS1 Operations and Maintenance Manual Operating the transmitter Use the up and down buttons to scroll through the existing presets, or scroll to the bottom of the list to Create New Preset (see Figure 2.28). Press the accept (checkmark) button to enter the editing menu for that preset (see Figure 2.29 on page...
  • Page 66 VS1 Operations and Maintenance Manual Operating the transmitter Figure 2.30: Output Power screen Figure 2.31. Use the up and down buttons to edit the output power (in 0.01 MHz Frequency. increments, then press the accept (checkmark) button to save the change. Press the cancel ( X ) button to return to the previous menu.
  • Page 67 VS1 Operations and Maintenance Manual Operating the transmitter Figure 2.33: Main Audio editing screens • Source: Use the up and down buttons to locate the desired audio source - AES , MPX , Analog L/R or Audio Player , then press the accept (checkmark) button to save the change.
  • Page 68 VS1 Operations and Maintenance Manual Operating the transmitter • Audio Player: Use the up and down buttons to select File Playlist or Stream 1 through Stream 255 , then press the accept (checkmark) button to save the change. Press the cancel ( X ) button to discard changes and return to the previous menu.
  • Page 69 VS1 Operations and Maintenance Manual Operating the transmitter When you select Pilot Settings from the Preset editing options screen, you can edit Pilot Settings. the settings of the pilot signal (see Figure 2.35). Figure 2.35: Pilot Settings menu Use the up and down buttons to move the cursor to the desired pilot setting and then press the right button to enable editing of the parameter.
  • Page 70 VS1 Operations and Maintenance Manual Operating the transmitter When you select SCA Settings from the Preset editing options screen, you can edit SCA Settings. various SCA parameters (see Figure 2.37). Figure 2.37: SCA Settings menu Use the up and down buttons to move the cursor to the desired SCA setting and then press the right button to enable editing of the parameter.
  • Page 71 VS1 Operations and Maintenance Manual Operating the transmitter Figure 2.39: Internal SCA1 and SCA2 editing screens • SCA Enable: Select ON or OFF. • SCA Level: Select a level between 0 and 20%. • SCA Freq: Select a frequency between 20 and 100 kHz.
  • Page 72 VS1 Operations and Maintenance Manual Operating the transmitter When you select RDS Settings from the Preset editing options screen, you can edit RDS Settings. various RDS parameters (see Figure 2.40). Figure 2.40: RDS Settings menu Use the up and down buttons to move the cursor to the desired RDS setting and then press the right button to enable editing of the parameter.
  • Page 73 VS1 Operations and Maintenance Manual Operating the transmitter Figure 2.41: RDS Settings editing screens • Enable: Select ON or OFF. • Data Source: Select Internal, Ext. ASCII, Ext. UECP, ASCII Over IP, or UECP Over IP. • Baud Rate: Select 150 bps, 300 bps, 600 bps, 1.2 kbps, 2.4 kbps, 4.8 kbps, 9.6 kbps, 19.2 kbps, 38.4 kbps, 57.6 kbps or 115.2 kbps.
  • Page 74 VS1 Operations and Maintenance Manual Operating the transmitter • RDS Level: Select a value between 0 and 10%. • RDS Phase: Select a value between 0 and 360 degrees. • PS Name: Enter an 8-character name. Use the right and left arrows to move the cursor to the desired character.
  • Page 75 VS1 Operations and Maintenance Manual Operating the transmitter Figure 2.43: AF Data editing screen • AF Number: Select the number of alternate frequencies (between 0 and 6). Issue 0.3 2010-11-24 Page 2-51...
  • Page 76 VS1 Operations and Maintenance Manual Operating the transmitter When you select Limiter Settings from the Preset editing options screen, you Limiter Settings. can edit various limiter parameters (see Figure 2.44). Figure 2.44: Limiter Settings menu Use the up and down buttons to move the cursor to the desired limiter and then press the right button to enter the associated sub-menu for: •...
  • Page 77 VS1 Operations and Maintenance Manual Operating the transmitter • Enable: Select ON or OFF. • Limit: Select a value between 0 and 160%. Figure 2.46: AGC Limiter sub-menu and editing screens • Enable: Select ON or OFF. • Limit: Select a value between 0 and 160%.
  • Page 78 VS1 Operations and Maintenance Manual Operating the transmitter Figure 2.47: 2-Slope Limiter sub-menu and editing screens • Enable: Select ON or OFF. • Limit: Select a value between 0 and 160%. • Gain: Select a value between 0 and 100 %.
  • Page 79 VS1 Operations and Maintenance Manual Operating the transmitter Use the up and down buttons to move the cursor to the desired audio loss menu item and then press the right button to enable editing of the item. Figure 2.49 shows all the editing screens for the Audio Loss menu.
  • Page 80 VS1 Operations and Maintenance Manual Operating the transmitter When you select Audio Delay from the Preset editing options screen, you can edit or Audio Delay. disable the audio delay period (see Figure 2.50). Figure 2.50: Audio Delay menu Use the up and down buttons to change the audio delay setting between disabled and any time period between 0 and 13 seconds, then press the accept (checkmark) button to save the change.

  • Page 81: Setting Local/Remote Control

    VS1 Operations and Maintenance Manual Operating the transmitter Setting local/remote control You can set the transmitter’s local/remote control using the remote AUI’s Local/Remote button (see “Local/Remote:” on page 2-14) or using the local front panel display (see “Using the front panel”).

  • Page 82: Viewing Transmitter Status

    VS1 Operations and Maintenance Manual Operating the transmitter Viewing transmitter status You can view the VS1’s operational status using the AUI’s Transmitter Status page - see Figure 2.54. This page shows current active alarms and status to aid in fault diagnosis. To view the...

  • Page 83: Setting User Accounts

    The VS1 contains a a default user account when it leaves the factory. This account appears as Nautel (Auto) in the List of Users and has Super User permission level. The default Username is “Nautel”.
  • Page 84 VS1 Operations and Maintenance Manual Operating the transmitter Setting user role There are three levels of role that can be assigned to users, each with their own specific functionality. All users have permission to change their own username and password, but are otherwise limited to the following functions: •...
  • Page 85 When you enter the User Accounts page for the first time, it is recommended you create an account and then delete the default Nautel account, as follows: 1. Login to the AUI using the deafult Username (“Nautel”) and Password (blank). 2. Set up your own Super User account, with your desired Username and Password.

  • Page 86: Software Configuration

    VS1 Operations and Maintenance Manual Operating the transmitter Software configuration Note: Unless otherwise noted, the following functions are only available via remote connection to the AUI. You can perform software upgrades to the AUI or transmitter, or perform various restarts or resets...
  • Page 87 VS1 Operations and Maintenance Manual Operating the transmitter • Email Configuration: Allows configuration of email parameters (e.g., server name, port number, etc.) (see “Email configuration” on page 2-69). • Notifications: Allows configuration of email notifications to be sent for user-selected alarm occurrences (see “Notifications”...
  • Page 88 AUI”). Determining DHCP setting One of the main decisions in configuring the network connection on your VS1 transmitter is whether you set DHCP to ON or OFF . If you are connecting to a network, consult with a network administrator before connecting the transmitter to your network to determine whether to enable (turn ON ) or disable (turn OFF ) the DHCP setting.
  • Page 89 VS1 Operations and Maintenance Manual Operating the transmitter Figure 2.57: Network Settings screen Set during factory testing; cannot be modified Set to ON if your network has a DHCP server. Automatically assigns IP, netmask, gateway and nameservers. Set to OFF if you do not have a DHCP server or if you wish to assign static addresses.
  • Page 90 Operating the transmitter Connecting a laptop directly to the transmitter If connecting to the VS1 directly with a laptop, you must set a static IP address on the VS1 and your laptop. 1. From the front panel UI’s Main Menu , go to User Settings / Network Settings and set the IP address as follows: –...
  • Page 91 Operating the transmitter Using the AUI By entering the VS1’s established IP address into an Internet browser’s address bar, and then logging into the AUI, you can view the network parameters configured through the front panel UI using the Network Setup page - see Figure 2.58.
  • Page 92 VS1 Operations and Maintenance Manual Operating the transmitter Upgrading software Figure 2.59. Figure 2.59: Upgrade Software page To upgrade a transmitter subsystem’s software, see “Upgrading software” Section 4, “Non- standard maintenance” on page 4-1 of this manual. CAUTION: If you are upgrading from a software version prior to V1.2, the ARM Watchdog feature must be DISABLED during the software upgrade process.
  • Page 93 To configure the email feature, perform the following steps: 1. Enter the four fields, noting the following: – Server Name : In order to enter a server name (e.g., mail.nautel.com), at least one nameserver IP address must be entered (see “Network setup”...
  • Page 94 VS1 Operations and Maintenance Manual Operating the transmitter Notifications The notifications feature (see Figure 2.61) provides a means for the transmitter to issue emails triggered by user defined alarm events. Figure 2.61: Notifications page To configure the notifications feature, perform the following steps: 1.
  • Page 95 VS1 Operations and Maintenance Manual Operating the transmitter Figure 2.62: Notifications adding/updating page Issue 0.3 2010-11-24 Page 2-71...
  • Page 96 Using the Upgrade Files tab, you can upload Nautel supplied software upgrade files that contain a .tgz extension. Use the Browse button to locate a file and then click Upload to upload the file. To remove a file, select a file from the list and click Delete .
  • Page 97 VS1 Operations and Maintenance Manual Operating the transmitter Audio player The built-in audio player (see Figure 2.64) can use a file playlist, Livewire or Shoutcast as an audio source. These sources must be configured before they can be used. This section describes how to configure audio player sources.
  • Page 98 VS1 Operations and Maintenance Manual Operating the transmitter Use the Remove button to delete audio files from the playlist. Use the Save button to save the new configuration whenever a change is made to the file playlist. If the playlist is currently playing, changes will not take effect until the playlit is started again.
  • Page 99 Figure 2.66: Audio Player page - Streams tab Streams The VS1 is capable of playing audio streams in either Shoutcast or Livewire format. The audio player supports Shoutcast playlists and IP addresses for audio streams. For a Shoutcast playlist enter the URL for the station. For an audio stream, enter the IP address followed by a colon, then the port for that stream (e.g., 10.10.10.1:8080).
  • Page 100 3. Enter the appropriate information for the audio server (Name and URL for Shoutcast; Name and Channel for Livewire). Make sure the VS1 can access the location. 4. Click OK to add the audio stream or click Cancel to discard changes.

  • Page 101: Changing Hardware Settings

    Making changes to these settings may void your warranty. Contact Nautel before making changes. You can establish calibration values and fault thresholds for critical parameters of the VS1 using the remote AUI or using the local front panel display. The following options are available: •...
  • Page 102 VS1 Operations and Maintenance Manual Operating the transmitter Configuring ARM watchdog Note: ARM watchdog configuration is only available using the front panel display. From the front panel UI, you can enable or disable the ARM watchdog feature. This feature, when enabled, monitors communication between the ARM processor and the DSP processor on the exciter/control PWB.
  • Page 103 “Using the front panel” on page 2-80). Note: During calibration, the external 10 MHz clock should be connected to the EXT 10 MHz IN (A1J4B) BNC connector on the rear of the VS1. Using the AUI To view the AUI’s Exciter TCXO screen (see Figure 2.69), select Hardware Configuration from the...
  • Page 104 VS1 Operations and Maintenance Manual Operating the transmitter Using the front panel To view the front panel’s TCXO calibration screens (see Figure 2.70), select System Settings -> Calibration from the Main Menu . Figure 2.70: Front Panel - TCXO calibration screens Use the up or down arrow to place the cursor next to TCXO Offset, then press the accept (checkmark) button to enter the TCXO Offset screen.
  • Page 105 VS1 Operations and Maintenance Manual Operating the transmitter Calibrating audio inputs You can calibrate analog and MPX (composite) audio inputs using the remote AUI (see “Using the AUI”) or using the local front panel display (see “Using the front panel” on page 2-82).
  • Page 106 ( X ) to discard changes and return to the previous menu. Note: Forward power (Run Fwd Cal) and reflected power (Run Refld Cal) calibrations are performed at the factory and should not require user adjustment. Contact Nautel for assistance, if necessary. Page 2-82 Issue 0.3 2010-11-24...
  • Page 107 VS1 Operations and Maintenance Manual Operating the transmitter Configuring RF drive source Note: Configuration of the RF drive source is only available using the front panel display. From the front panel UI, you can configure the source of the transmitter’s RF drive (internal or external).
  • Page 108 7. With a user-supplied CAT5 cable, connect a wire between A1J1-7 (RF mute) and the the RF mute input on the external exciter. Note: The RF mute signal from the VS1 is active low and will not function if the external exciter is not configured in the same way.
  • Page 109 From the front panel UI, you can perform a recovery reset of the operating system (OS). You will also need to install a flash drive, provided by Nautel, in one of the USB ports on the rear of the VS1.

  • Page 110: Configuring Remote Inputs And Outputs

    Remote I/O from the Menu options. Click X in the upper, right corner to close this page and return to the home page. Refer also to the VS1 Pre-installation Manual for information on remote inputs and outputs and their factory default settings.
  • Page 111 That setting can only be made by a local user using the front panel UI. Nautel presets the digital inputs prior to shipping. See the VS1 Pre-installation Manual for details. Select the desired digital input (1 through 10) from the list. The Channel and Control settings for the selected input, as well as the current logic level (1 or 0), are displayed on the right-hand side of the page.
  • Page 112 VS1 Operations and Maintenance Manual Operating the transmitter • Falling Edge Toggle . Logic ‘0’ (low or trailing edge) de-activates the input; next logic ‘0’ (low or trailing edge) activates the input. • Rising Edge Toggle . Logic ‘1’ (high or rising edge) activates the input; next logic ‘1’ (high or rising edge) de-activates the input.
  • Page 113 2.78, you can configure up to 16 digital outputs that indicate either the presence of various alarms or the status of operator controlled circuits. Nautel presets the digital outputs prior to shipping. See the VS1 Pre-installation Manual for details. Figure 2.78: Digital Outputs Page Select the desired digital output (1 through 16) from the list.
  • Page 114 • Various Alarms . The active logic level indicates that the selected alarm is occurring. Any transmitter alarm can be selected as a digital output. Refer to the VS1 Troubleshooting Manual for a description of each alarm. Configure logic You can configure the active/inactive logic for each of the 16 digital outputs.
  • Page 115 Analog outputs There are four analog outputs that can be remotely monitored. These outputs are factory defined and are not user configurable. Refer to the VS1 Pre-Installation Manual for a list of these analog outputs. Issue 0.3 2010-11-24 Page 2-91...

  • Page 116: Setting Pilot Sample Level

    From the front panel, you can set the level of the pilot sample that is applied to the PILOT SAMPLE OUT (A1J4A) BNC connector on the rear of the VS1. To view the Pilot Sample screen, select User Settings -> Pilot Sample from the Main Menu (see Figure 2.80).

  • Page 117: Front Panel Display Settings

    VS1 Operations and Maintenance Manual Operating the transmitter Front panel display settings Note: Front panel display settings are only available using the front panel display. From the front panel, you can configure the LCD display’s contrast, brightness and backlight settings. To view the LCD Settings screen, select User Settings -> LCD Settings from the Main...
  • Page 118 VS1 Operations and Maintenance Manual Operating the transmitter Figure 2.82: LCD Settings Editing Screens • LCD Contrast: Select a value between 50 (lighter contrast) and 200 (darker contrast). • LCD Backlight: Select a value between 0 and 100%. • LED Timeout: Select disabled (i.e., no timeout) or select a time period between 0 and 1800 seconds (30 minutes).

  • Page 119: Configure Test Signal Generator

    The test signal generator function is only available using the front panel display. From the front panel UI, you can configure the test signal generator output of the VS1. Note that a different menu will appear depending on the currently configured test signal type. To view the Signal Gen screen, select User Settings ->...
  • Page 120 VS1 Operations and Maintenance Manual Operating the transmitter Figure 2.84: Signal Generator Editing Screens • Enable: Select ON or OFF. • Type: Select None, Sine Wave, Sine Sweep or Bandlimited Noise. • Level: Select a value between 0 and 100 %.

  • Page 121: Setting Station Id Parameters

    Station ID settings are only available using the front panel display. In certain applications, the VS1 may be used as a translator to re-broadcast primary information as a secondary station on an alternate frequency. To allow the secondary station to be identified, you can set station ID parameters such as call sign, FSK deviation and repeat interval.
  • Page 122 VS1 Operations and Maintenance Manual Operating the transmitter Figure 2.86: Station ID Editing Screens Page 2-98 Issue 0.3 2010-11-24...

  • Page 123: Using An External 10 Mhz Input

    VS1 Operations and Maintenance Manual Operating the transmitter Using an external 10 MHz input You can configure the VS1 to accept an external 10 MHz input using the remote AUI (see “Using the AUI”) or using the local front panel display (see “Using the front panel”...
  • Page 124 VS1 Operations and Maintenance Manual Operating the transmitter Using the front panel To view the enable/disable screen for the external 10 MHz input (see Figure 2.88), select User Settings -> Ext. 10 MHz Inp from the Main Menu . Figure 2.88: Front Panel - External 10 MHz Input screen Use the up or down arrow to toggle between ON (using external 10 MHz input) and OFF (not using external 10 MHz input), then press the accept (checkmark) button to save the change.

  • Page 125: Routine Maintenance

    Inspecting lightning protection systems - see page 3-8 Scheduled maintenance Scheduled maintenance consists of performing a visual inspection of the VS1 at scheduled intervals. The recommended minimum time between scheduled maintenance visits is three months. Local operating and environmental conditions may dictate more frequent visits, while in remote sites, less frequent visits may be acceptable.

  • Page 126: Replacing A Damaged Air Filter

    VS1 Operations and Maintenance Manual Routine maintenance Checking hardware All hardware must be checked at least once a year. Nautel recommends more frequent checking if the VS1 is subjected to above average thermal cycling, caused by turning the VS1 on and off. •...
  • Page 127 VS1 Operations and Maintenance Manual Routine maintenance Figure 3.1: Air Filter Cleaning or Replacement Filter PVC retaining Grill plate Issue 0.3 2010-11-24 Page 3-3...

  • Page 128: Performing On-Air Checks

    Note: Nautel completes the Proof of Performance document with the transmitter operating at 98 MHz, terminated into a precision 50 ohm load. Measurements made at other operating frequencies may not yield the same readings.
  • Page 129 VS1 Operations and Maintenance Manual Routine maintenance Table 3.1: Expected Transmitter Meter Readings Meter Parameter Meter Value at ... (displayed on front panel 88 MHz 98 MHz 108 MHz UI or remote AUI Forward (forward power) 1250 W 1250 W...
  • Page 130 VS1 Operations and Maintenance Manual Routine maintenance Meter Parameter Meter Value at ... (displayed on front panel 88 MHz 98 MHz 108 MHz UI or remote AUI Delta 10 MHz IPA Fwd 63.7 W 74.9 W 79.6 W Total PA Curr 42.1 A...

  • Page 131: Replacing The Exciter/Control Pwb Battery

    Interval Every 12 months. Parts and tools Replacement battery: 3 V lithium coin cell, 20 mm (Nautel Part # BBLT01, Panasonic # CR2032). Procedure Perform the following steps to replace the battery: 1. Ensure ac power is being applied to the transmitter.

  • Page 132: Inspecting Lightning Protection Systems

    VS1 Operations and Maintenance Manual Routine maintenance Inspecting lightning protection systems You should inspect the lightning protection systems that are connected to your VS1 transmitter, ac power, RF feedline, antenna and tower periodically to ensure that your site, equipment and personnel are fully protected.

  • Page 133: Non-Standard Maintenance

    File list (should highlight in blue) and click Versions . Note the current software revision for Audio Player, AUI, Server, SNMP Agent, Axia Livewire Module, Watchdog and Controller. 2. Contact Nautel for the most recent software revision and download *.tgz file to a laptop or network location.
  • Page 134 VS1 Operations and Maintenance Manual Non-standard maintenance Transferring upgrade file The following steps assume either the laptop will be used to connect directly to the transmitter OR the transmitter and network computer are currently connected to the same network. Transmitter IP configuration 1.
  • Page 135 3. At the transmitter login screen enter: – User: “Nautel” or “****”, where **** is the user assigned user name – Password: leave blank (default) or “****”, where **** is the user assigned password 4. Navigate through the AUI to Menu / Software / Upload Files , select the upgrade files tab and press Browse .
  • Page 136 3. After a successful load (status is 100% complete and a message indicates a successful load), cycle the ac power (turn off, then on) on the VS1. 4. This completes the software upgrade. Restore the former network settings on the transmitter...

  • Page 137: List Of Terms

    List of terms Section 5: List of terms This section defines some of the terms that are used in Nautel documentation. Audio Engineering Society/European Broadcasting Union (AES/EBU) is the name of a AES-EBU. digital audio transfer standard. The AES/EBU digital interface is usually implemented using 3-pin XLR connectors (the same type connector used in professional microphones).
  • Page 138 Look-Up Table. LUT. Refers to the multiplexed baseband signal. Also referred to as the composite signal. MPX. A setting that controls power level, frequency and audio parameters. The VS1 allows you to Preset. pre-program multiple presets. Printed Wiring Board. PWB.

  • Page 140: Issue 0.3 2010-11-24

    Toll Free: +1.877.6NAUTEL (6628835) (Canada & USA only) 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 2010 NAUTEL. All rights reserved.

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