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Nautel NX5 AM Operation & Maintenance Manual

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3: OPERATION & MAINTENANCE
MANUAL
NX5 AM
T
RANSMITTER
Document ID:
NHB-NX05-OPS
Version:
0.1
Issue Date:
2015-08-01
Status:
Preliminary

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Summary of Contents for Nautel NX5 AM

  • Page 1 3: OPERATION & MAINTENANCE MANUAL NX5 AM RANSMITTER Document ID: NHB-NX05-OPS Version: Issue Date: 2015-08-01 Status: Preliminary...

  • Page 3: Contact Information

    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 2015 NAUTEL. All rights reserved. VERSION 0.1 2015-08-01 PAGE III...

  • Page 5: Table Of Contents

    NX5 OPERATION & MAINTENANCE MANUAL TABLE OF CONTENTS CONTENTS Contact Information 3.1.iii Release Control Record Description 3.1.1 Ac-Dc Power Stage 3.1.2 Exciter Stage 3.1.3 Control/Monitor Stage 3.1.5 RF Power Stage 3.1.7 RF Output Network 3.1.8 Operating the Transmitter 3.2.1 User Interface Options 3.2.4 Viewing Transmitter Log 3.2.22...
  • Page 6 NX5 OPERATION & MAINTENANCE MANUAL TABLE OF CONTENTS Audio Player 3.2.176 Changing Exciter Transfer Settings 3.2.182 Routine maintenance 3.3.1 Upgrading Software 3.3.1 Scheduled Maintenance 3.3.5 Replacing the Air Filter 3.3.6 Performing On-Air Checks 3.3.8 Replacing the Control/Interface PWB Battery 3.3.9 Inspecting Lightning Protection Systems 3.3.11 List of terms...

  • Page 7: Release Control Record

    NX5 OPERATION & MAINTENANCE MANUAL Release Control Record ISSUE DATE REASON 2015-08-01 Initial Release of manual. Supports NX5 hardware NARA66. Supports NX SW version 4.5 and higher. VERSION 0.1 2015-08-01 PAGE 3.VII...
  • Page 8 NX5 OPERATION & MAINTENANCE MANUAL PAGE 3.VIII VERSION 0.1 2015-08-01...

  • Page 9: Description

    NX5 OPERATION & MAINTENANCE MANUAL DESCRIPTION SECTION 3.1: DESCRIPTION This section provides a high-level description of the transmitter’s key sections. The transmitter circuitry is subdivided into five basic stages.  Ac-Dc Power Stage  Exciter Stage - see page 3.1.3 Control/Monitor Stage - see page 3.1.5 ...

  • Page 10: Ac-Dc Power Stage

    NX5 OPERATION & MAINTENANCE MANUAL DESCRIPTION Ac-Dc Power Stage Figure 3.1.5 on page 3.1.13 and electrical schematic SD-1 . The ac/dc power supply stage contains the input power transformer that receives the main ac input to the transmitter. It also contains the transmitter’s low voltage power supplies and rack interface PWB.

  • Page 11: Exciter Stage

    NX5 OPERATION & MAINTENANCE MANUAL DESCRIPTION Rack Interface PWB The rack interface PWB provides various functions for the ac-dc power stage, including: Monitors the B+ voltage and regulates the SCR rectifier’s output via the B+ level control  signal applied to the rectifier’s SCR control board. ...
  • Page 12 NX5 OPERATION & MAINTENANCE MANUAL DESCRIPTION Figure 3.1.1: Exciter Stage Analog/ Digital Modulation RF Drive (A) Analog/ Inputs Digital AM Digital RF Drive 1 Exciter A PDM (A) Modulation Inputs RF Drive 2 PDM 1/3/5 RF Drive (B) Digital AM PDM 2/4/6 Exciter B PDM (B)

  • Page 13: Control/Monitor Stage

    NX5 OPERATION & MAINTENANCE MANUAL DESCRIPTION PDM Distribution The control/interface PWB (A4) accepts the six PDM (1, 2, 4, 5, 7 and 8) signals from the digital AM exciter PWBs (A and B) and splits the active exciter PDM signals into two (+ and -) differential outputs that are provided to the RF power stage.
  • Page 14 NX5 OPERATION & MAINTENANCE MANUAL DESCRIPTION  Accepts customer D-sub connections for digital remote inputs, digital remote outputs and analog outputs. Accepts customer connections to complete the external interlock and transmitter (PDM)  inhibit circuits.  Accepts customer Ethernet connection to allow access to the transmitter’s remote AUI feature. ...

  • Page 15: Rf Power Stage

    NX5 OPERATION & MAINTENANCE MANUAL DESCRIPTION RF Power Stage Figure 3.1.5 on page 3.1.13 and electrical schematic SD-4 . The RF power stage contains two RF power modules (A12 and A13) two fan tray assemblies (A16 and A17), power module interface PWB (A10), rack interface PWB (A9) and RF combiner transformer (A21).

  • Page 16: Rf Output Network

    NX5 OPERATION & MAINTENANCE MANUAL DESCRIPTION RF Output Network Figure 3.1.2, Figure 3.1.5 on page 3.1.13 and electrical schematic SD-5 . The combined RF output is filtered through an RF network consisting of two “T” networks with a shunt third harmonic trap, and then provided to the antenna system.
  • Page 17 NX5 OPERATION & MAINTENANCE MANUAL DESCRIPTION VSWR Protection The transmitter uses an advanced DSP based VSWR protection system. Circuitry in the RF output network (see 3.1.2 on page 3.1.8) samples the RF voltage and RF current at the input to the harmonic filter.
  • Page 18 NX5 OPERATION & MAINTENANCE MANUAL DESCRIPTION Shutback: Shutbacks can be caused by the following alarms: SWR Shutback (exciter), Fast SWR Shutback (controller), Over-Current Shutback (exciter), Over-Voltage Shutback (exciter) and Arc Shutback (controller).  During a single shutback event (see 3.1.3 on page 3.1.10), the transmitter reduces the output power to 0 W, and remains in that state for 100 ms.
  • Page 19 NX5 OPERATION & MAINTENANCE MANUAL DESCRIPTION Cutback: A cutback occurs after multiple shutback events. When three shutback events occur within a 15 s period, the cutback accumulator exceeds its threshold. The transmitter responds by limiting the output power to 85% of the previous power set point or the power at which the shutback event occurred, whichever is lower.
  • Page 20 NX5 OPERATION & MAINTENANCE MANUAL DESCRIPTION Average Reflected Power Foldback If the average reflected power, calculated over a nominal 5 s period, exceeds a limit of 4% of rated power, the output power is gradually reduced in order to maintain a reflected power that is less than this limit.
  • Page 21 AC MAINS TRANSFORMER TRANSFORMED AC INHIBIT SCR BALANCED ANALOG DISCHARGE AES 1 RECTIFIER RECTIFIED AC CURRENT RECTIFIED AC RELAY SENSOR AES 2 FILTER DIGITAL REMOTE INPUTS EXTERNAL +15V (REMOTES) CUSTOMER CONNECTIONS EXTERNAL 10MHz +30V +15V EXTERNAL INTERLOCK B+ LEVEL CONTROL -15V TRANSMITTER INHIBIT RECTIFIER TEMP...

  • Page 22: Operating The Transmitter

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER SECTION 3.2: OPERATING THE TRANSMITTER This section provides information about operating the NX5 transmitter:  User Interface Options - see page 3.2.4 Front Panel Pushbuttons - see page 3.2.9 – Front Panel UI Screens - see page 3.2.12 –...
  • Page 23 Setting the Clock - see page 3.2.103 – Configuring NTP Servers - see page 3.2.106 – Nautel Phone Home - see page 3.2.109 – Setting Call Sign/ID - see page 3.2.110 – Configure Test Signal Generator - see page 3.2.112 –...
  • Page 24 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER  System Settings - Front Panel UI - see page 3.2.134 Host Reset - see page 3.2.135 – Configuring Host Watchdog - see page 3.2.136 – OS Recovery - see page 3.2.136 –...

  • Page 25: User Interface Options

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER User Interface Options The user can interface with the NX5 using one of four methods:  Locally, using the the front panel push-buttons (RF On, RF Off and Local/Remote, see Front Panel Pushbuttons) and the front panel UI and its navigational buttons (see Front Panel UI, on page 3.2.9).
  • Page 26 Main Menu Home FRONT PANEL UI (see 3.2.10) Screen Select Preset (see 3.2.74) Edit Presets (see Sheet 2 of 2) Reset Alarms (see 3.2.84) View Status View Alarms (see 3.2.30) View Meters (see 3.2.54) View Log (see 3.2.30) User Settings Set Clock (see 3.2.105) Clear Log (see 3.2.30) NTP Sync (see 3.2.107)
  • Page 27 FRONT PANEL UI Select Preset to Edit Presets Edit or Create New Preset **AMSS (see 3.2.82) Output Power (see 3.2.76) Mod Loss Enable Overall Mode (see 3.2.82) (see 3.2.76) Threshold Timeout Configuration Action (see 3.2.77) Preset Copy Another Audio Options Preset AM Source (see 3.2.77)
  • Page 28 SNMP Configuration PDM Settings Critical Parameters Time Setup System Settings Reset NTP Servers (see page 3.2.127) Upgrade Software Nautel Phone Home Exciter Clock Calibration Call Sign/ID RF Monitor Level Remote I/O Power Lockout Inputs (see page 3.2.163) Power Thresholds Outputs...
  • Page 29 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Front Panel Pushbuttons The front panel contains three pushbutton switches that provide local control of the transmitter’s RF on/ off status and the local/remote operational control status (see Figure 3.2.4). Figure 3.2.4: Front Panel Pushbutton Switches Status LEDs RF On RF Off...
  • Page 30 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER LCD Display This display shows all the UI screens. The display’s home screen, used for viewing purposes only, is shown in Figure 3.2.5. Figure 3.2.5: Home Screens LEDs Navigational Buttons Press ‘checkmark’ button to go to Main Menu screen Figure 3.2.6 (see...
  • Page 31 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Navigational Buttons There are six push-buttons on the right-hand side of the LCD display that allow navigation through the UI pages, as well as modifying selected settings.  Up and down - on menu and list screens, moves cursor up and down through the associated page;...
  • Page 32 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Front Panel UI Screens Table 3.2.1 defines the available front panel display screens. Table 3.2.1: Front Panel UI Screens UI Screen Function See Page page 3.2.10 Home Screen Displays basic transmitter parameters Main Menu Choose options and navigate to other screens.
  • Page 33 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Table 3.2.1: Front Panel UI Screens UI Screen Function See Page page 3.2.54 View Status - View Meters View the levels of various transmitter parameters, including forward power, reflected power, PA voltage, PA current and low level dc supply voltages.
  • Page 34 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Table 3.2.1: Front Panel UI Screens UI Screen Function See Page page 3.2.139 System Settings - Run TCXO Calibrate the internal clock to a user supplied external high precision 10 MHz clock reference page 3.2.140 System Settings - Exciter Sync Set synchronization data for the active exciter.
  • Page 35 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Advanced User Interface (AUI) The NX5’s advanced user interface (AUI) (see Figure 3.2.7 on page 3.2.16) is available via remote connection only. To access the AUI, you need a PC (and a web browser) that is connected to the NX5 - directly or through a switch or network - via the control interface PWB’s (A4) LAN connection (J3A).
  • Page 36 The top banner is permanent on all remote AUI pages and includes:  Nautel Logo : From any page, click the Nautel logo to log out and return to the login window. Date & Time : Displays day, month, year and current time (see Setting the Clock, on page 3.2.103).
  • Page 37 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER The bottom banner is also permanent on all remote AUI pages and includes:  RF On : Click to enable the transmitter’s RF power stage.  RF Off : Click to disable the transmitter’s RF power stage. ...
  • Page 38 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Logging in to the Remote AUI The transmitter’s remote AUI provides a means to restrict access to transmitter control functions through the AUI to authorized users only. User accounts can be pre-defined to set access restriction between view only (no control) and full-administrative control (see “User Accounts”...
  • Page 39 Password – In the field, enter the password. Default is blank. : The remote AUI is factory configured with a default login username and password. Nautel NOTE recommends that you change the password to improve overall system security. See “Changing the Password”...
  • Page 40 Exgine interface information, configure SNMP parameters, capture transmitter critical parameters, set the system clock, manage NTP servers, configure the Nautel Phone Home feature and set the station call sign/ID. Menu - Remote I/O Define remote digital inputs/outputs and configure analog outputs.

  • Page 41: Main Menu

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Main Menu From the home page, click the Menu button to view the Main Menu (see Figure 3.2.9). From this page, you can select one of 11 sub-menus. See Remote AUI Pages on page 3.2.20 for a summary of each sub- menu and to a cross-reference page for more detailed information.

  • Page 42: Viewing Transmitter Log

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Viewing Transmitter Log You can view transmitter log information using the remote AUI (see Transmitter Log - Using the Remote AUI) or using the local front panel display (see Transmitter Alarms and Log - Using the Front Panel UI, on page 3.2.30).
  • Page 43 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Viewing Event Logs page displays a “read only” chronological table of log events under the following column Logs headings (see Figure 3.2.10):  Device - identifies the origin device of the alarm (e.g., Controller, Exciter, or RF Module). ...
  • Page 44 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Understanding the Log Manager Window The Log Manager window contains the functions that edit the logs listed in the page. Click the Logs Log Manager button to open a configurable window with the following display options identified by tabs across the top of the screen (see Figure 3.2.12):...
  • Page 45 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Filtering Logs You can change which events are visible on the Logs screen based on the settings in the Filter Logs tab in the Log Manager (see Figure 3.2.13). Click the Select a Device drop-down arrow, and select the desired device type to restrict events shown to only those originating from the selected device.
  • Page 46 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Copying Logs You can create a copy of all the logs in the selected list (copied to the remote user’s computer clipboard) by clicking the Copy Logs button in the Log Manager (see Figure 3.2.14).
  • Page 47 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Deleting Logs You can delete all events or a selection of events by clicking the Delete button in the Log Manager (see Figure 3.2.15).  Delete by date - activates the date and time selection (24-hour clock) where users can click the arrows to establish a date and time.
  • Page 48 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Viewing Log Statistics You can view statistical information on the events being displayed by clicking the Statistics button in the log manager (see Figure 3.2.16). Only events subject to the filtering parameters are displayed on the Statistics screen. NOTE The Statistics screen displays the number of occurrences of each event type that is present within the filtered period as well as the time and date of the earliest and latest event occurrence for each.
  • Page 49 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Viewing the Legend Click the Legend button in the Log Manager (see Figure 3.2.17) to display a legend that describes the symbols shown in the State and Severity columns of the Logs page. Click OK or Cancel to close this window and return to the Transmitter Log page.
  • Page 50 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Transmitter Alarms and Log - Using the Front Panel UI When you select View Status -> View Alarms or View Status -> View Log from the front panel UI’s Main Menu (see Figure 3.2.18), you can view various active or logged events, respectively, of the NX5.

  • Page 51: Viewing Instrument Panels

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Viewing Instrument Panels The remote AUI provides up to 12 instrument panels (depending on purchased options) that you can choose to display on the remote AUI’s Home page. Up to four instrument panels can be displayed at one time, including a spectrum analyzer.
  • Page 52 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Describing Instrument Panel Options Table 3.2.3 describes instrument panel options: Table 3.2.3: Instrument Panels INSTRUMENT DESCRIPTION REFERENCE page 3.2.35 Spectrum Displays a spectrum analyzer, capable of monitoring the transmitter’s RF output spectrum and the spectrum of the signal generated by the exciter. page 3.2.37 EQ Frequency Response Displays the frequency response of the exciter’s EQ filter.
  • Page 53 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Viewing Instrument Panels Each instrument panel has a unique tool bar that may be different from other panels (see Figure 3.2.20). Figure 3.2.20: Instrument Panel Tool Bars Backward one step Forward one step Maximize / Minimize Cog (more settings) Peak (jumps cursor to...
  • Page 54 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.21: Instrument Cursor Manipulation Tools to move cursor Cursor and display information Figure 3.2.22: Instrument Panel - Expansion Example Maximize/Minimize buttons PAGE 3.2.34 VERSION 0.1 2015-08-01...

  • Page 55: Available Instrument Panels

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Available Instrument Panels Spectrum Analyzer Figure 3.2.23. The carrier level is normalized to its unmodulated level at 0 dB. The graph center is always at the carrier frequency, as defined by the Exciter’s set Frequency value. Masks are shown based on transmission mode and are defined by the following standards: ...
  • Page 56 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Use the left and right buttons to make fine adjustments to the cursor position. Use the up or down button to maximize (if it was minimized) or minimize (if it was maximized) the panel size.
  • Page 57 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Equalizer Screens The NX5’s exciter includes a fixed equalizer to optimize audio and digital performance. There are three menus available in the instrument panels - EQ Frequency (see Figure 3.2.25), EQ Impulse Response (see Figure 3.2.26 on page 3.2.38) and EQ Filter Delay (see...
  • Page 58 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.26: EQ Impulse Response EQ Impulse Response Figure 3.2.26. 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 (filter tap # and magnitude) is noted in the upper, right-hand corner of the panel.
  • Page 59 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.27: EQ Filter Delay EQ Filter Delay Figure 3.2.27. This panel displays the group 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 (frequency and delay) is noted in the upper, right-hand corner of the panel.
  • Page 60 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER AM-AM and AM-PM Correction Screens The exciter linearizes the transmitter’s magnitude (envelope) path and phase (RF drive) path by using two correction parameters - AM-AM Correction (see Figure 3.2.28) and AM-PM Correction (see Figure 3.2.29 on page 3.2.41), which can be viewed as instrument panels.
  • Page 61 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.29: AM-PM Correction AM-PM Correction This panel displays the phase correction being applied to the RF drive signal. The x-axis represents the input signal amplitude and the y-axis represents the phase shift correction applied for a given amplitude value.
  • Page 62 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.30: Signal Constellation Panel shown maximized Signal Constellation Figure 3.2.30. In IBOC mode only, the exciter continuously measures the transmitter’s output signal and performs basic demodulation of the digital carriers. The Signal Constellation panel displays the phase and amplitude of the symbols being modulated within an OFDM sub-carrier group as dots on a cartesian graph.
  • Page 63 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.31: Lissajous Plot L and R mode I and Q mode Lissajous Plot Figure 3.2.31. This panel displays a Lissajous figure that represents either L (left) and R (right) audio content or a representation of the digital modulation signal [I (in-phase) and Q (quadrature)]. I and Q will be automatically selected unless you are operating in stereo mode or not operating digital.
  • Page 64 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.32: Smith Chart Zoom Zoom Smith Chart Figure 3.2.32. The Smith Chart allows you to visualize the impedance of the transmitter’s load as seen at the combiner, as a function of frequency. The impedance shown on the Smith Chart is normalized to the combiner input impedance.
  • Page 65 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.33: Modulation Levels Modulation Levels Figure 3.2.33. Bar graphs display the percentage of L+R modulation, PDM (magnitude) and I/Q modulation for the transmitter. I/Q bar graphs will show levels in DRM or IBOC mode only. The level shown in yellow represents the currently measured peak modulation level, with the RMS level shown in green.

  • Page 66: Audio Inputs

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.34: Audio Inputs Audio Inputs Figure 3.2.34. Bar graphs display the amplitude (in dB) of the audio inputs selected in the preset. bar graph levels are relative to the input level specified in the preset. The level shown in yellow represents the currently measured peak amplitude, with the RMS level shown in green.
  • Page 67 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.35: Power Distribution Graph Power Distribution Graph Figure 3.2.35. The exciter measures the relative power levels of the signal and determines the probability of exceeding a given power level, relative to the average power. The data is plotted in the Power Distribution Graph as a CCDF (complementary cumulative distribution function).

  • Page 68: Viewing Real-Time Meters

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Viewing Real-Time Meters You can view meters using the remote AUI (see Viewing Real-Time Meters - using the Remote AUI) or using the front panel UI (see Viewing Real-Time Meters - Front Panel UI, on page 3.2.54).
  • Page 69 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Describing the Meter Display The meters displayed on the Home screen of the remote AUI are those selected for display. Each meter is a colour-coded bar with minimum and maximum values (see Figure 3.2.36 on page 3.2.48).
  • Page 70 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Identifying Meter Information on a Specific Sub-device Open the “Meter List View” window, which organizes available meters by transmitter sub-system. Controller  - see Figure 3.2.38) Exciter A  - see Figure 3.2.39 on page 3.2.51 Exciter B ...
  • Page 71 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.39: Meters - Information Display for the Exciter Figure 3.2.40: Meters - Information Display for Rack 1 VERSION 0.1 2015-08-01 PAGE 3.2.51...
  • Page 72 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.41: Meters - Information Display for Modules - Rack 1 On the modules summary screen (Figure 3.2.41), meters for both modules are shown on a page. Individual power modules can be directly inhibited by pressing their button.
  • Page 73 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Managing Meter Lists : Meter lists are associated with user accounts. Lists saved in this screen are only displayed in the NOTE current user account. Setting a list as default will define the meters that will appear when logging into the current account (or after an ac power interruption in the remote AUI if this is the default user account).
  • Page 74 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Viewing Real-Time Meters - Front Panel UI When you select View Status -> View Meters from the Main Menu (see Figure 3.2.44 on page 3.2.54) you can view various metered parameters of the NX5. These parameters are divided into sections. When you select a particular section, the applicable meters are displayed as a list on the appropriate screen.
  • Page 75 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Controller: RF Drive Duty Cycle PDM Duty Cycle Controller Temperature Forward Carrier Power Total B+ DC Current Max Module Temperature Exciter (A/B, as applicable): Forward Carrier Power RF RMS Current Forward RMS Power RF Peak Current Forward Peak Power B+ Sample...
  • Page 76 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Rack 1: B+ Control Setpopint Minimum Module DC Current Minimum Module Low Voltage PS B+ Limit Setpoint Maximum Module DC Current Maximum Module Low Voltage PS B+ Sample Average Module DC Current Average Module Low Voltage PS PDM Input Minimum Module B+ Voltage...
  • Page 77 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Viewing Exgine Statistics - Front Panel UI When you select View Status -> Exgine Statistics from the Main Menu (see Figure 3.2.44 on page 3.2.54) - displayed only if the optional Exgine PWB is installed - you can view various Exgine parameters..

  • Page 78: Presets - Editing Operational Settings

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Presets - Editing Operational Settings You can manage presets using the remote AUI (see Managing Presets - Using the Remote AUI) or using the local front panel display (see Managing Presets - Using the Front Panel, on page 3.2.74).
  • Page 79 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Editing, Creating and Deleting Presets When the Presets page (see Figure 3.2.48 on page 3.2.66, Figure 3.2.49 on page 3.2.66 Figure 3.2.53 on page 3.2.67) is opened from the menu, the Current Settings of the transmitter are displayed.
  • Page 80 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Loading Presets When you enter the Presets page, the Current Settings of the transmitter are displayed. SeeEditing, Creating and Deleting Presets, on page 3.2.59 for more information on Current Settings . If you do not wish to change the current operational state of the transmitter, use the button on the left side of Load...
  • Page 81 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Understanding the Preset Tabs The Presets page consists of tabs across the top with functions on the left-side and parameters displayed in the center and right-side of the window. A separate display appears for each of the following tabs: General (see...
  • Page 82 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Analog Settings (see Figure 3.2.48 on page 3.2.66) AM Source - select the audio source for the AM signal. Options are:   Unused  Balanced Analog (connector J9 on A4)  AES1 (connector J7 on A4) ...
  • Page 83 AMSS - Amplitude Modulation Signalling System. Allows low-bit rate data to be transmitted with  the Analog AM signal. Contact Nautel for assistance with using AMSS. Default is OFF. : The AMSS field is displayed only when the Overall Mode is Analog AM or DRM+AM.
  • Page 84 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Digital Settings (see Figure 3.2.49 on page 3.2.66 through Figure 3.2.52 on page 3.2.67) For DRM and DRM+AM modes: Data Source - Select the source for the OFDM (digital) signal (AES1 or AES2). ...
  • Page 85 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Audio Loss (see Figure 3.2.53 on page 3.2.67) Mod Loss Timeout - Determine if an action should be taken on the loss of a modulating signal.  Select Enabled or Disabled. Default is Disabled. If Enabled, the following sub-fields appear: ...
  • Page 86 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.48: Presets - Analog Settings Figure 3.2.49: Presets - Digital Settings (Overall Mode = DRM) Figure 3.2.50: Presets - Digital Settings (Overall Mode = DRM+AM) PAGE 3.2.66 VERSION 0.1 2015-08-01...
  • Page 87 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.51: Presets - Digital Settings (Overall Mode = IBOC) Figure 3.2.52: Presets - Digital Settings (Overall Mode = IBOC+AM) Figure 3.2.53: Presets Tabs - Audio Loss VERSION 0.1 2015-08-01 PAGE 3.2.67...
  • Page 88 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Preset Examples - IBOC Preset The following examples shows you how to set presets for the IBOC applications with typical values: Output Power Enter field with desired power level. Overall Mode IBOC Under Digital Settings: IBOC Service Mode ...
  • Page 89 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Preset Examples - IBOC Preset with Analog Backup Set two presets similar to the two previous examples. Mod Loss Timeout Enabled Under Audio Loss , set . Several other selectable fields will appear. Action Change Preset Mod Loss Preset...
  • Page 90 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Selecting the DCC mode The NX5 is capable of several DCC modes (see Editing, Creating and Deleting Presets, on page 3.2.59), each with varying performance in terms of energy savings and effects on the reproduced signal. The selectable options are: ...
  • Page 91 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.55: EAMC Figure 3.2.56: Basic DAM VERSION 0.1 2015-08-01 PAGE 3.2.71...
  • Page 92 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.57: Full DAM Figure 3.2.58: DCC1 PAGE 3.2.72 VERSION 0.1 2015-08-01...
  • Page 93 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Guidelines for Selecting the DCC Mode: Observe the following guidelines when selecting the DCC mode for your application. AMC mode (see Figure 3.2.54 on page 3.2.70) should work well for most broadcasters and is generally recommended if you have an IBOC transmission.
  • Page 94 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Managing Presets - Using the Front Panel The Select Preset screen (see Figure 3.2.59) and Edit Presets screen (see Figure 3.2.60) allow users to view operational data (power level, frequency, mode, program input characteristics), plus create and control preset settings.
  • Page 95 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.61: Create New Preset screen Figure 3.2.62: Preset Editing menu Displayed only if the selected preset’s Overall Mode is set accordingly. Within the Preset Editing menu, use the up and down buttons to scroll through the options and press the accept (checkmark) button to enter the selected editing menu/screen.
  • Page 96 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Output Power When you select Output Power from the Preset editing options screen, you change the transmitter’s output power (see Figure 3.2.63). Figure 3.2.63: Output Power screen Use the up and down buttons to edit the output power (in 10 W increments, then press the accept (checkmark) button to save the change.
  • Page 97 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Configuration When you select Configuration from the Preset editing options screen, you can select the desired pre- correction configuration (see Figure 3.2.65). Figure 3.2.65: Configuration screen Use the up and down buttons to locate the desired configuration - e.g., Default Config (1 of 2), My New Settings (2 of 2), etc.
  • Page 98 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.67: Audio Options editing screens Use the up and down buttons to select the desired audio source - AES1, Balanced Analog, Unused, Audio Player or AES2, then press the accept (checkmark) button to save the change.
  • Page 99 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER DCC Settings : This screen is displayed only when the Overall Mode is Analog AM, DRM+AM or IBOC+AM. NOTE When you select DCC Settings from the Preset editing options screen, you can select the DCC mode, as applicable (see Figure 3.2.68).
  • Page 100 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER DRM Settings : This screen is displayed only when the Overall Mode is DRM or DRM+AM. NOTE When you select DRM Settings from the Preset editing options screen, you can select various parameters for a DRM or DRM+AM preset (see Figure 3.2.70).
  • Page 101 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER IBOC Settings : This screen is displayed only when the Overall Mode is IBOC or IBOC+AM. NOTE When you select IBOC Settings from the Preset editing options screen, you can select various parameters for an IBOC or IBOC+AM preset (see Figure 3.2.70).
  • Page 102 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER AMSS Enable/Disable When you select AMSS from the Preset editing options screen, you can enable or disable the Amplitude Modulation Signalling System (see Figure 3.2.71). : This screen is displayed only when the Overall Mode is Analog AM or DRM+AM. NOTE Figure 3.2.71: AMSS menu Use the up and down buttons to select Enable or Disable, then press the accept (checkmark) button to...
  • Page 103 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.73: Mod Loss editing screens Determines whether the mod loss feature is used. Use the up and down arrows to select ON (enable) or OFF (disable), 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 104: Resetting Alarms

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Copy Another Preset When you select Copy Another Preset from the Preset editing options screen, you can copy the settings from another preset into the preset that is being edited (see Figure 3.2.74).

  • Page 105: Viewing Transmitter Status - Remote Aui

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Viewing Transmitter Status - Remote AUI You can view the NX5’s operational status using the remote AUI’s Transmitter Status page - see Figure 3.2.76. This page shows current active alarms to aid in fault diagnosis. To view the Transmitter Status page, click the Status button in the remote AUI’s bottom banner.
  • Page 106 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Viewing Alarm Details Transmitter Status page - see Figure 3.2.76 page 3.2.85 displays a table that lists the active alarm details under the following columns:  Device - identifies the alarms by their originating device (e.g., Controller, Exciter A, Rack, etc.) ...

  • Page 107: User Settings

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER User Settings You can adjust various user settings using the remote AUI or using the local front panel UI. The remote AUI’s User Settings page (see Figure 3.2.78 on page 3.2.88) allows operators to modify various custom user settings such as network and email notifications.
  • Page 108 3.2.92). If you change a network setting on the front panel UI, it will also be reflected on the remote AUI, and vice versa. Nautel recommends that the following network settings be entered/vetted by a qualified NOTE: Network Administrator. If parameters are changed and the remote AUI is reset, record the new values (or see the local front panel UI) to ensure you can log in after changes have been made.
  • Page 109 (checkmark) button to save the change. Press the cancel ( X ) button to discard changes and return to the previous menu. A nameserver (also called a DNS) translates a host name (e.g., mail.nautel.com) to an IP address NOTE:...
  • Page 110 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.79: Network Settings screens All addresses shown are for reference purposes only Displays a number that serves as unique network adapter identifier. This is set by the manufacturer and is displayed for informational purposes only (cannot be user set).
  • Page 111 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Connecting a Laptop Directly to the Transmitter If connecting to the NX5 directly with a laptop, you must set a static IP address on the NX5 and your laptop. From the front panel UI’s Main Menu , go to User Settings -> Network Settings and set the IP address as follows: ...
  • Page 112 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Network Setup - Using the Remote AUI : Nautel recommends that the following network settings be entered/vetted by a qualified NOTE Network Administrator. Refer to Figure 3.2.79 on page 3.2.90 for detailed descriptions of each field.
  • Page 113 3.2.81) allows you to configure email parameters (e.g., email server and port number), and is required if the notification feature is used (see Notifications, on page 3.2.95). : Nautel recommends that the following settings be entered/vetted by a qualified Network NOTE Administrator. Figure 3.2.81: Email Configuration page To configure the email feature, perform the following steps: Open the User Settings page by clicking Menu ->...
  • Page 114 Enter the following parameters:  Email Server : The outgoing mail server. Enter the server name or IP address here. In order to enter a server name (e.g., mail.nautel.com), at least one nameserver IP address must be entered (see Network Setup, on page 3.2.88).
  • Page 115 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Notifications : This function is only available via the remote AUI. NOTE The Notifications feature (see Figure 3.2.82) provides a means for the transmitter to issue emails triggered by user defined alarm events. If you use this feature, you must also configure an email (see Email Configuration, on page 3.2.93).
  • Page 116 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.83: Notifications adding/updating page PAGE 3.2.96 VERSION 0.1 2015-08-01...
  • Page 117 3.2.99). If you change a network setting on the front panel UI, it will also be reflected on the remote AUI, and vice versa. Nautel recommends that the following network settings be entered/vetted by a qualified NOTE: Network Administrator. If parameters are changed and the remote AUI is reset, record the new values (or see the local front panel UI) to ensure you can log in after changes have been made.
  • Page 118 If no gateway is used or assigned, enter 0.0.0.0. Configure the Exgine's IP network parameters as assigned by the local network administrator. The Exgine expects E2X on port 9000. Some non-Nautel Exporters utilize port 11000 instead. PAGE 3.2.98 VERSION 0.1 2015-08-01...
  • Page 119 It is used to filter E2X traffic in case multiple exporters are used in broadcast mode on a single LAN. 0.0.0.0 is also a valid configuration. E2X Port - The Exgine expects E2X on port 9000. Some non-Nautel Exporters utilize port ...

  • Page 120: Snmp Configuration

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER SNMP Configuration The SNMP configuration page (see Figure 3.2.86) provides a means to configure the SNMP agent and associated traps. Figure 3.2.86: SNMP Configuration page - Agent tab shown Agent Settings Using the Agent tab (see Figure 3.2.86), you can configure the SNMP agent as follows: Enter the five fields, noting the following:...
  • Page 121 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER  Trap Receiver IP : Enter the IP address of the computer to which the SNMP agent will send trap notifications. The computer must be running an SNMP application that is configured to receive traps.
  • Page 122 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Capturing Critical Parameters : This function is only available via the remote AUI. NOTE You can capture critical parameter data for the transmitter’s current state using the remote AUI’s Critical Parameters page (see Figure 3.2.88).
  • Page 123 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Setting the Clock The NX5 controller module’s internal clock uses an externally accessible backup battery, and therefore maintains an accurate date and time, even during power outages. The date and time needs to be set when the transmitter is first installed, or after a power outage if the backup battery has failed.
  • Page 124 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER The Time Setup option allows users to set the exact time and date information as well as regional and timezone settings for a transmitter location. Set the time and date as follows: Select the Time Setup option from the left-side of the User Settings page to open a related window on the right-side of the page.
  • Page 125 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Setting the Clock - Using the Front Panel When you select User Settings -> Set Clock from the Main Menu (see Figure 3.2.90) you can set the current time and date. The time appears on the top line of the top level screen (see Figure 3.2.5 on page 3.2.10).
  • Page 126 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Configuring NTP Servers : The following function is only available via remote connection to the AUI; however, the use of NOTE NTP can also be enabled/disabled from the front panel UI (see Enabling NTP, on page 3.2.107).
  • Page 127 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Enabling NTP From the remote AUI, enable the NTP function by selecting the Enable NTP checkbox. Disable by de- selecting the Enable NTP checkbox. Click the Apply button to activate any change. From the front panel UI’s User Settings ->...
  • Page 128 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Monitoring NTP Servers The NTP Server Status section displays tabular information on the NTP servers connected to the network. The table includes remote name, IP address, delay, offset and jitter.  Remote Name: Displays the host name of the referenced time source. An asterisk (*) in the first column marks the reference time source that is currently preferred by the NTP daemon.
  • Page 129 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Nautel Phone Home : This function is only available via the remote AUI. For more information on the Nautel Phone NOTE Home feature, see Section 1.8 of the Pre-Installation Manual. If you are enabling the Phone Home feature, you can set your serial number/call sign and contact email (optional) to identify your transmitter to Nautel Customer Service.
  • Page 130 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Setting Call Sign/ID : This function is only available via the remote AUI. NOTE You can set a name that identifies the transmitter on the remote AUI. To view the remote AUI’s Call Sign/ID page (see Figure 3.2.95), select Call Sign/ID from the User Settings options.

  • Page 131: User Settings - Front Panel Ui

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER User Settings - Front Panel UI You can establish various user settings for the NX5 using the local front panel display. The following options are available:  Set Clock: see Setting the Clock - Using the Front Panel, on page 3.2.105 ...
  • Page 132 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Configure Test Signal Generator : The test signal generator function is only available using the front panel display. NOTE From the front panel UI, you can configure the test signal generator output of the NX5. Note that a different menu will appear depending on the currently configured test signal type.
  • Page 133 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.97: Signal Generator Editing Screens Select a type - None, White Noise, Tone Sweep or Single Tone. Press the cancel (X) button to discard changes and return to the previous menu. Select a level between 0 and 100%.

  • Page 134: Precorrection Settings

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Precorrection Settings You can control various critical parameter functions using the remote AUI’s Precorrection page(see Figure 3.2.98), which you access from the Menu page . These settings will normally be generated at the factory, based on the desired modes of NOTE: operation, and should not require user adjustment.
  • Page 135 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Mag-Phase Delay The remote AUI’s Mag-Phase Delay page (see Figure 3.2.99) allows for setting the difference in delay between the magnitude (PDM) path and phase (RF drive) path in the exciter. Changing this delay can help to level out and minimize spectral regrowth, providing improved spectral performance and increased margin under the mask.
  • Page 136 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER B+ Setpoint The remote AUI’s B+ Setpoint page (see Figure 3.2.100) allows you to identify the B+ Setpoint (nominally 400 V). This value does not normally require user adjustment. Figure 3.2.100: Precorrection - B+ Setpoint Enter the value and click Apply .
  • Page 137 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER AM-AM Correction The AM-AM Correction page (see Figure 3.2.101) allows you to load or capture a set of AM-AM correction curves. You can Load or Delete curves in this list; you can also capture a curve. When you select Capture , the AM-AM Correction window is displayed.
  • Page 138 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER AM-PM Correction The AM-PM Correction page (see Figure 3.2.102) allows you to load or capture a set of AM-PM correction curves. You can Load or Delete curves in this list; you can also capture a curve. When you select Capture , the AM-PM Correction instrument panel is displayed.
  • Page 139 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Envelope Equalization The Envelope Equalization page (see Figure 3.2.103) allows you to load or capture a set of envelope equalization curves. You can Load or Delete curves in the list; you can also capture a curve. When you select Capture , the EQ Frequency Response window is displayed.
  • Page 140 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Configurations The Configurations page (see Figure 3.2.104) allows users to group the parameters that appear within the Precorrection Settings menu. Figure 3.2.104: Precorrection - Configurations Edit button appears for local users in Local mode or for remote users in Remote mode.
  • Page 141 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Once a configuration is created, it can be used in a preset. This allows the user to change the pre- correction settings based on the operating mode via the preset. Configurations are normally established at the factory, based on customer operating modes, and do not require adjustment.
  • Page 142 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Exciter Synchronization The Exciter Synchronization page (see Figure 3.2.105) displays correction curve and configuration settings stored on each exciter and allows users to synchronize the settings between exciters A and B. When AM-AM correction, AM-PM correction and EQ curves and configurations are created, they are stored in the active exciter.

  • Page 143: User Accounts

    The NX5 contains 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”. The default Password is blank (i.e., no password). Nautel recommends that you delete this account once you...
  • Page 144 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Setting User Permission Level There are four levels of permission that can be assigned to users, each with their own specific function. All users have permission to change their own username and password, but are otherwise limited to the following functions: ...
  • Page 145 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Changing the Password To change your password, click the Change Password button. A menu appears that prompts you to enter the old password, new password and confirmation of the new password. Click Apply to save or Cancel to exit this menu (see Figure 3.2.107 on page 3.2.126).
  • Page 146 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: Log in to the remote AUI using the default Username (“Nautel”) and Password (blank). Set up your own Administrator account, with your desired Username and Password.

  • Page 147: System Settings - Remote Aui

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER System Settings - Remote AUI Users can determine critical system configuration parameters using the remote AUI or using the front panel UI. All system settings that can be performed on the remote AUI can also be performed on the front panel UI.
  • Page 148 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Reset The Reset page (see Figure 3.2.109) allows users to reboot two items - the remote AUI and the active exciter. Figure 3.2.109: Reset page  To reset the remote AUI, click the Reboot AUI button. This will function with remote control enabled or disabled.
  • Page 149 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Upgrade Software The Upgrade Software page (see Figure 3.2.110) allows for uploading a suite of software upgrade files (.tgz files) via remote connection. Navigate the page as described below. For additional information on loading software, see Upgrading Software, on page 3.3.1.
  • Page 150 The exciter clock may also be synchronized to a reference source, either an external 10 MHz reference connected to J1B of the control/interface PWB or a Nautel optional GPS sync PWB. The frequency and phase option is applicable for combined systems only. The exciter reference will lock to the external source frequency within 10 mHz (0.01 Hz) using the 10 MHz sync input, to within 2 mHz (0.002 Hz)
  • Page 151 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER RF Monitor Level page allows you to set values for the Gain at Full Power (in dB) (see RF Monitor Level Figure 3.2.112) on the amplifier that drives the RF Monitor output. The RF monitor is factory set to provide a level of 5 V rms into 50 ohm (27 dBm).
  • Page 152 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Power Lockout page (see Figure 3.2.113) allows you to set a high power limit for the transmitter. Power Lockout There is provision to set up to eight different limits (which can be used to accommodate daytime/night- time patterns or different antennae), but only the selected limit is active.
  • Page 153 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Power Thresholds page (see Figure 3.2.114) allows you to set two distinct low forward power Power Thresholds thresholds the transmitter. These thresholds are for monitoring purposes only. The transmitter will not shut back if these thresholds are crossed, but alarm notifications are generated for each of the two Low Forward Power Threshold 1 Low Forward Power Threshold 2 thresholds (...

  • Page 154: System Settings - Front Panel Ui

    Information on this sub-menu is not included in the manual. If necessary, contact Nautel for assistance The following options are available: Host Reset: see Host Reset, on page 3.2.135 ...
  • Page 155 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Host Reset : A host reset can also be performed from the remote AUI, using the Reboot AUI button on the NOTE Reset page (see Reset, on page 3.2.128). Once the host is reset, all users that were remotely connected (logged in) will be logged out.
  • Page 156 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 two USB ports (J3B and J3C) on control/ interface PWB (A4).
  • Page 157 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Updating Firmware : A firmware update can also be performed from the remote AUI, using the Upgrade Software NOTE page in the System Settings menu (see Upgrade Software, on page 3.2.129). From the front panel UI, you can update firmware used in the transmitter. To perform a firmware update, select System Settings ->...
  • Page 158 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Adjusting LCD Display Settings : Front panel display settings are only available using the front panel UI. NOTE From the front panel UI, you can configure the LCD display’s contrast, brightness and backlight settings. To view the LCD Settings screen, select User Settings ->...
  • Page 159 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.121: LCD Settings Editing Screens Select a value between 50 (lighter contrast) and 200 (darker contrast) (in increments of 5). Press the cancel (X) button to discard changes and return to the previous menu. Default setting is 100.
  • Page 160 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Exciter Synchronization : Exciter synchronization settings are only available using the front panel UI. NOTE From the front panel UI, you can configure synchronization settings for the active exciter. Note that a different menu will appear depending on the currently configured source type.
  • Page 161 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.124: Exciter Sync Editing Screens Select a source type - None, 10 MHz Sync input, GPS Sync Card or Combiner. Press the cancel (X) button to discard changes and return to the previous menu. Displayed only when the Source is set to GPS Sync Card.
  • Page 162 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER RF Monitor Settings : You can also adjust the RF monitor gain using the remote AUI (see RF Monitor Level, on page NOTE 3.2.131). The RF Monitor menu allows you to set values for the Gain at Full Power (in dB) on the amplifier that drives the RF Monitor output.
  • Page 163 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Power Lockout Settings : You can also adjust the power lockout settings using the remote AUI (see Power Lockout, on page NOTE 3.2.132). The Power Lockout menu (see Figure 3.2.127 on page 3.2.143) allows you to set a high power limit for the transmitter.
  • Page 164 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER For basic transmitter operation, you must configure and enable at least one of the eight high power Max Power Lockout 1 limits. is factory set for the transmitter’s maximum output power. Set up a power lockout using the front panel UI as follows: Select Active Lockout from the Main Menu ->...
  • Page 165 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Power Threshold Settings : You can also adjust the power threshold settings using the remote AUI (see Power Thresholds, on NOTE page 3.2.133). The Power Thresholds menu (see Figure 3.2.129) allows you to set two distinct low forward power thresholds the transmitter.
  • Page 166 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER PM Inhibit : You can also enable and disable RF power modules using the remote AUI (see Figure 3.2.41 on NOTE page 3.2.52). The PM Inhibit menu allows the user to locally disable any of the four power modules in the transmitter. Use the up and down buttons to move the cursor to the desired power module and then press the right button to enable editing.

  • Page 167: Factory Settings

    Factory settings are established at Nautel and should not require adjustment. These settings affect critical system protections. Making changes to these settings may void your warranty. Contact Nautel before making changes. For future reference, record a parameter value before and after making a change.
  • Page 168 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER This section includes the following topics:  Audio Input Calibration, on page 3.2.149  B+ Voltage Calibration, on page 3.2.151 Forward/Reflected Power Calibration, on page 3.2.153   RF Symmetry Adjustment, on page 3.2.154 SWR Threshold Adjustment, on page 3.2.156 ...
  • Page 169 Factory settings are established at Nautel and should not require adjustment. These settings affect critical system protections. Making changes to these settings may void your warranty. Contact Nautel before making changes. For future reference, record a parameter value before and after making a change.
  • Page 170 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Calibrating Audio Inputs - Using the Front Panel UI The front panel UI’s Audio Cal screen (see Figure 3.2.134) displays the level of the analog audio source (in dBm). Figure 3.2.134: Factory Settings - Audio Cal Screen Use the up and down buttons to increase or decrease the audio calibration level between -10 and 12 dBm (in 0.01 dBm increments).
  • Page 171 Factory settings are established at Nautel and should not require adjustment. These settings affect critical system protections. Making changes to these settings may void your warranty. Contact Nautel before making changes. For future reference, record a parameter value before and after making a change.
  • Page 172 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Calibrating B+ Voltage - Using the Front Panel UI The front panel UI’s B+ Settings menu (see Figure 3.2.136) allows for setting of the B+ Limit setpoint (high voltage alarm level; nominally 420 V) or a B+ calibration. The calibration field allows you to enter a measured B+ voltage to calibrate the B+ based on an externally measured B+ level.
  • Page 173 PA impedance (magnitude and phase), the test load impedance and the measured RF current. Nautel sets these values at the factory. Value changes are not typically required unless you are performing a frequency change.
  • Page 174 Factory settings are established at Nautel and should not require adjustment. These settings affect critical system protections. Making changes to these settings may void your warranty. Contact Nautel before making changes. For future reference, record a parameter value before and after making a change.
  • Page 175 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Adjusting RF Symmetry - Using the Front Panel UI The front panel UI’s RF Symmetry menu (see Figure 3.2.140) allows entering RF symmetry values for exciter A or B to attempt to minimize second harmonic content when operating on each exciter. Values are factory set and should not require adjustment.
  • Page 176 Factory settings are established at Nautel and should not require adjustment. These settings affect critical system protections. Making changes to these settings may void your warranty. Contact Nautel before making changes. For future reference, record a parameter value before and after making a change.
  • Page 177 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Attempting to Start the peak Reflected Scale Calibration routine will display the following WARNING, prompting you to confirm your selection. Adjusting SWR Thresholds - Using the Front Panel UI The front panel UI’s SWR Thresholds menu (see Figure 3.2.143) allows the enabling/disabling of the SWR protection circuitry and the setting of various SWR threshold levels.
  • Page 178 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Transmitter Type : This setting is displayed on the NX5’s remote AUI, but is not user adjustable. It is set at the NOTE factory during testing. Figure 3.2.144: Factory Settings - Transmitter Type Page PAGE 3.2.158 VERSION 0.1 2015-08-01...

  • Page 179: Transmitter Frequency

    Factory settings are established at Nautel and should not require adjustment. These settings affect critical system protections. Making changes to these settings may void your warranty. Contact Nautel before making changes. For future reference, record a parameter value before and after making a change.
  • Page 180 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Adjusting Transmitter Frequency - Using the Front Panel UI The front panel UI’s Frequency screen (see Figure 3.2.146) displays the precise carrier frequency of the transmitter. Figure 3.2.146: Factory Settings - Frequency Screen Use the up and down buttons to increase or decrease the carrier frequency between 520 and 1710 kHz (in 1 Hz increments).
  • Page 181 Factory settings are established at Nautel and should not require adjustment. These settings affect critical system protections. Making changes to these settings may void your warranty. Contact Nautel before making changes. For future reference, record a parameter value before and after making a change.
  • Page 182 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Adjusting PDM Settings - Using the Front Panel UI The front panel UI’s PDM Settings menu (see Figure 3.2.148) displays the selected PDM settings. The settings are based on the PDM configuration of the transmitter and are set at the factory during product testing.

  • Page 183: Configuring Remote Inputs And Outputs

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Configuring Remote Inputs and Outputs You can configure your remote input/output interface for the transmitter using the remote AUI (see Remote I/O Settings - Using the Remote AUI) or using the local front panel UI (see Remote I/O Settings - Using the Front Panel UI, on page 3.2.168).
  • Page 184 (i.e., local plus remote). That setting can only be made by a local user using the front panel pushbutton. NX5 Pre-installation Manual Nautel sets digital input defaults prior to shipping. See the for details. If necessary, re-configure the digital inputs as follows: Figure 3.2.151: Remote I/O Input Parameters...
  • Page 185 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Scheduler On/Off – - enables/disables the automatic mode scheduler. Max Power Lockout 1 - 8 – - selects the associated power lockout limit (1 - 8) as active (functions regardless of local/remote mode). Preset: –...
  • Page 186 3.2.166, you can configure up to 16 outputs that indicate either the presence of various alarms or the status of operator controlled circuits. Nautel sets digital output defaults prior to shipping. See the NX5 Pre-installation Manual for details. If necessary, re-configure the remote outputs as follows: Figure 3.2.152: Remote I/O Page - Output Parameters...
  • Page 187 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Main Exciter – - Active logic level indicates that exciter A is selected as the main exciter. Inactive logic level indicates that exciter B is selected as the main exciter. Scheduler On/Off –...
  • Page 188 Unless otherwise noted, these inputs are only accepted by the transmitter if remote control is enabled. That setting can only be made by a local user using the front panel UI. Nautel sets digital input defaults prior to shipping. See the NX5 Pre-installation Manual for details. PAGE 3.2.168...
  • Page 189 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.154: Remote Inputs Screens (Input 1 shown) Use the up and down buttons to select the desired digital input (1 through 10) from the list. Each screen shows the current digital input parameter (e.g., RF On/Off), as well as the polarity (e.g., Falling edge RF On) and current state (e.g., HIGH, LOW) of the corresponding input pin.
  • Page 190 Nautel sets digital output defaults prior to shipping. See the NX5 Pre-installation Manual for details. Figure 3.2.155: Remote Outputs Screens (Output 1 shown) Use the up and down buttons to select the desired digital output (1 through 16) from the list.
  • Page 191 AUI) or using the front panel UI (see Analog Outputs - Front Panel UI). Nautel sets analog output defaults prior to shipping. There are no user configuration options. They are for monitoring purposes only. See the NX5 Pre-installation Manual for details. Analog Outputs - Remote AUI...
  • Page 192 - forward power, reflected power, B+ voltage and total dc current. Nautel sets analog output defaults prior to shipping. There are no configuration options. They are for monitoring purposes only. See the NX5 Pre-installation Manual for details.

  • Page 193: Preset Scheduler

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Preset Scheduler If the scheduler is enabled (see Enabling the Scheduler on page 3.2.175), you can program a yearly preset schedule for the transmitter. Use the Scheduler page (see Figure 3.2.158) to set the dates and times at which presets take effect.
  • Page 194 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.159: Rule Explorer window When you click in the Rules list, you have the option to edit or delete an existing rule, or to create a new rule. Click the New or Edit button to display the Rule Explorer window (see Figure 3.2.159).
  • Page 195 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Enabling the Scheduler You can enable or disable the scheduler using the remote AUI (see Enabling the Scheduler - Remote AUI) or using the local front panel UI (see Enabling the Scheduler - Front Panel UI, on page 3.2.175).

  • Page 196: Audio Player

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Audio Player The built-in audio player (see Figure 3.2.162) 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 197 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Playlist The Playlist tab (see Figure 3.2.163) displays the audio files and sequence that currently make up the playlist. Only audio files that are supported (e.g., .wav or .mp3 files) will be played. For .mp3 files, using files with bit rates equal to or less than 96 kbps achieves best audio results.
  • Page 198 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER You should not change an active (playing) playlist nor should you attempt to delete or move a NOTE: song that is currently playing. To make changes to the playlist, the audio player must be off (inactive) - or at least not being used as the active preset’s source.
  • Page 199 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.164: Audio Player page - Streams tab Streams The NX5 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.
  • Page 200 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.165: Adding Audio Streams Shoutcast Type Livewire Type Adding an Audio Stream From the Streams tab (see Figure 3.2.164 on page 3.2.179), click the Add button. Use the drop-down menu to select the desired Type of audio stream - Shoutcast or Livewire (see Figure 3.2.165).
  • Page 201 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Editing or Deleting an Audio Stream From the Streams tab (see Figure 3.2.164 on page 3.2.179), select the desired audio stream from the list. Click the Edit button to modify the audio stream or the Delete button to remove the audio stream.

  • Page 202: Changing Exciter Transfer Settings

    NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Changing Exciter Transfer Settings If your transmitter contains dual exciters, you can control the auto exciter transfer function using the remote AUI (see Exciter Changeover Settings - Using the Remote AUI) or using the local front panel UI (see Exciter Changeover Settings - Using the Front Panel, on page 3.2.183).
  • Page 203 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Exciter Changeover Settings - Using the Front Panel From the front panel UI, you can set the active exciter, main exciter and auto changeover status. To view the Changeover screen, select Changeover from the Main Menu (see Figure 3.2.167).
  • Page 204 NX5 OPERATION & MAINTENANCE MANUAL OPERATING THE TRANSMITTER Figure 3.2.168: Changeover Editing Screens Select the transmitter’s active exciter - Exciter A or Exciter B. Press the cancel (X) button to return to the previous menu. Select the transmitter’s main exciter - Exciter A or Exciter B. Typically, the main exciter is the exciter that operates until an automatic changeover occurs.

  • Page 205: Routine Maintenance

    NX5 OPERATION & MAINTENANCE MANUAL ROUTINE MAINTENANCE SECTION 3.3: ROUTINE MAINTENANCE This section provides instructions for performing routine maintenance on the NX5 transmitter. This section includes the following topics:  Upgrading Software  Scheduled Maintenance - see page 3.3.5 Replacing the Air Filter - see page 3.3.6 ...
  • Page 206 Using a web browser go to ftp://www3.nautel.com/NX_Series/ to make sure your software version is the latest available. Check the existing software version . Contact Nautel for the most recent software revision and download *.tgz file to a laptop or network location. 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.
  • Page 207 3.3.2. The transmitter login screen should appear. 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 Navigate through the remote AUI to Menu ->...
  • Page 208 - this confirms the upgrade was successful. If the upgrade was not successful, repeat Step 1 through Step 5. If still unsuccessful, contact Nautel. PAGE 3.3.4 VERSION 0.1 2015-08-01...

  • Page 209: Scheduled Maintenance

    NX5 OPERATION & MAINTENANCE MANUAL ROUTINE MAINTENANCE Scheduled Maintenance Scheduled maintenance consists of performing a visual inspection of the NX5 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 210: Replacing The Air Filter

    Take the following steps to replace an NX5 air filter: Order a new filter, as necessary. You can order a standard sized filter from Nautel (Nautel Part # HR142) or from the manufacturer (18” x 24” x 2” American Air Filter PerfectPleat HC M8 MERV 8 or equivalent) or obtain one from any local supplier of HVAC supplies.
  • Page 211 NX5 OPERATION & MAINTENANCE MANUAL ROUTINE MAINTENANCE Figure 3.3.1: Replacing the Air Filter 4 quarter-turn Bracket fasteners to (filter behind remove filter bracket bracket) NOTE: Air flow direction is back to front VERSION 0.1 2015-08-01 PAGE 3.3.7...

  • Page 212: Performing On-Air Checks

    NX5 OPERATION & MAINTENANCE MANUAL ROUTINE MAINTENANCE Performing On-Air Checks You should check the on-air quality of the transmitter’s signal periodically. This check can be done locally at the transmitter site, or remotely from another location in the transmitter’s coverage area. Interval Every 12 months, or as required by law.

  • Page 213: Replacing The Control/Interface Pwb Battery

    Interval Every 12 months. Parts and Tools Replacement battery. 3 V lithium coin cell, 20 mm (Nautel Part # BBLT01, Panasonic # Panasonic CR2032). Procedure Perform the following steps to replace the battery: Ensure ac power is being applied to the transmitter.
  • Page 214 NX5 OPERATION & MAINTENANCE MANUAL ROUTINE MAINTENANCE Figure 3.3.2: Replacing the Battery CONTROL/ INTERFACE PWB (LOWER) COMBINER CONTROL (UPPER) R158 A (TOP) - INPUTS REMOTE I/O BALANCED AES 2 AES 1 B (BOT) - OUTPUTS R159 ANALOG AUDIO CR18 CR22 CR28 CR32 CR35...

  • Page 215: Inspecting Lightning Protection Systems

    NX5 OPERATION & MAINTENANCE MANUAL ROUTINE MAINTENANCE Inspecting Lightning Protection Systems You should inspect the lightning protection systems that are connected to your NX5 transmitter, ac power, RF feedline, antenna and tower periodically to ensure that your site, equipment and personnel are fully protected.
  • Page 216 NX5 OPERATION & MAINTENANCE MANUAL ROUTINE MAINTENANCE PAGE 3.3.12 VERSION 0.1 2015-08-01...

  • Page 217: List Of Terms

    NX5 OPERATION & MAINTENANCE MANUAL LIST OF TERMS SECTION 3.4: LIST OF TERMS This section defines some of the terms that are used in Nautel documentation. Analog to Digital Converter. ADC. Audio Engineering Society/European Broadcasting Union (AES/EBU) is the name of a digital AES-EBU.
  • Page 218 NX5 OPERATION & MAINTENANCE MANUAL LIST OF TERMS A complete loss of RF output power, caused by any one of a variety of faults, including high Shutback. VSWR, low B+ voltage, high RF current, RF drive failure, external interlock or spark gap. An electrical panel that protects equipment from electrical surges in the Surge protection board.
  • Page 220 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 2015 NAUTEL. All rights reserved.

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