AM IBOC Exciter Technical Instruction Manual - Nautel · AM IBOC Exciter Technical Instruction Manual Table of contents Page v Contents Release control record vii About this manual

AM IBOC Exciter

Technical Instruction Manual

Document:AM_IBOC-MANUAL

Issue: 0.05 2009-11-12

Status: Preliminary

Nautel Limited10089 Peggy’s Cove RoadHackett’s Cove, NS Canada B3Z 3J4Phone: +1.902.823.3900 orToll 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: [email protected]: www.nautel.com

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 2009 NAUTEL. All rights reserved.

mailto:[email protected]

http://www.nautel.com

AM IBOC Exciter Technical Instruction Manual Table of contents

Page v

Contents

Release control record vii

About this manual ix

Description 1-1

Overview 1-1Physical requirements 1-3Cooling requirements 1-4

Pre-installation tasks 2-1

Parts and tools 3-1

Parts supplied by Nautel 3-1Parts not supplied by Nautel 3-1

Unpacking 4-1

Connecting the AM IBOC Exciter 5-1

Quick setup procedure 6-1

Starting the AM IBOC Exciter 6-2Setting the carrier frequency 6-3Setting the IP address 6-3Configuring presets 6-4Calibrating mag/phase delay and dc offset 6-5

AM IBOC Exciter Technical Instruction Manual Table of contents

Page vi Issue 0.05 2009-11-12

Remote interfacing 7-1

Operating 8-1

User interface 8-2Main menu 8-6Select preset 8-7Edit settings 8-7View status 8-23

Troubleshooting 9-1

LED indications 9-2Network related alarms 9-4Audio related alarms 9-4Checking cable connections 9-5Parts information 9-6

List of terms 10-1

AM IBOC Exciter Technical Instruction Manual

Issue 0.05 2009-11-12 Page vii

Release control record

Issue Date Reason

0.01 2008-11-06 Initial release of manual

0.02 2008-11-19 Incorporated Engineering review edits

0.03 2008-12-02 Updated Section 6: Quick Setup Procedure

0.04 2009-01-28 Incorporated Customer Service review edits

0.05 2009-11-12 Table 7.1: Corrected Day/Night pin assignments

Section 9: added Figures 9-5 and 9-6 for the AM IBOC exciter interface PWB


Page viii Issue 0.05 2009-11-12


Issue 0.05 2009-11-12 Page ix

About this manual

This manual provides information about installing, operating and troubleshooting an AM IBOC Exciter. This manual is intended for use by field technicians and site managers.

Using this manual

Read the task list provided in Section 2, “Pre-installation tasks” on page 2-1. The task list describes the preparations you must make prior to receiving and installing the AM IBOC Exciter.

Later sections of this manual provide reference information regarding physical, cooling, LAN, and synchronization requirements.

Features of this manual

This manual contains a number of useful features:

Online (PDF files)

• Click on blue text (hyperlinks) to jump to a related section or get additional information (for example, to view a definition of a term).

• To find keywords, use Find in Acrobat Reader’s Edit menu.

• To quickly find a specific section, click the section in the PDF file’s Bookmarks list.

Printed

• To find a specific term, go to Section 11, “List of terms” on page 11-1.

Online resources

The Nautel website provides useful resources to keep you up to date on your AM IBOC Exciter.

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 x Issue 0.05 2009-11-12

Online documentation

The website’s NUG section provides online access to all the documentation for your AM IBOC Exciter. Documentation is provided in Acrobat (PDF) format. You can use the documentation online or print the sections that you need.

AM IBOC Exciter Technical Instruction Manual Description

Issue 0.05 2009-11-12 Page 1-1

Section 1: Description

This section provides a description of the AM IBOC Exciter.

• Overview

• Physical requirements - see page 1-3

• Cooling requirements - see page 1-4

Overview

The AM IBOC Exciter is a companion device for the Exporter Plus when installed in certain Nautel AM broadcast transmitters (XR, XL, Jazz and some ND series).

The AM IBOC Exciter’s primary functions are:

• modulating IBOC data received over an Ethernet connection from the Exporter Plus.

• generating Magnitude and Phase outputs on two sets of RJ45 connectors, one set for a day-time transmitter and one for a night-time transmitter.

• (when properly configured) producing an RF output for a linear transmitter.

The AM IBOC Exciter can accept an analog audio input (balanced or AES/EBU format) and be configured to operate as an analog AM exciter. It can also changeover to an audio input, via a backup preset feature (see “Program source changeover” on page 1-2).

There are six programmable presets, two of which that can be configured for selection by the remote ‘day’ and ‘night’ inputs. Each preset has options for setting various parameters including program source, mag/phase delay and dc offset.

The AM IBOC Exciter front panel has a convenient user interface consisting of an LCD graphic display, keypad and LEDs to indicate operational status. All connections are made to the back panel.

Refer to Figure 1.1 on page 1-2 for a typical AM IBOC Exciter configuration.


Page 1-2 Issue 0.05 2009-11-12

Figure 1.1: Typical AM IBOC Exciter configuration

Program source changeover

The AM IBOC Exciter can be set up to switch to a backup audio source in the event of a fault with the Exporter Plus or with Exporter Plus communications.

Any preset can be configured to automatically switch to another preset under the following conditions:

1. HD data is lost

2. HD data is OK

3. audio input is silent

In a simple, single transmitter system, two presets can be configured - one for HD operation (standard) and one for analog operation (backup). The HD preset is configured to change to the analog preset if condition # 1 occurs. Similarly, the analog preset is configured to change to the HD preset if condition # 2 occurs. Condition # 3 is useful if the system is operating as analog only, with two audio inputs - one primary and one backup.

In a day/night configuration, there needs to be two day presets and two night presets. One of each of the day and night presets is for HD operation and the other is for backup analog operation. Note that remote inputs for day/night operation should be assigned to each HD preset.

DigitalAudio

EthernetExporter

Plus

AM IBOCExciterAnalog

Audio

Alternate Program Source

Transmitter (XR, XL, ND,

J1000)

Magnitude

Phase


Issue 0.05 2009-11-12 Page 1-3

Physical requirements

Figure 1.2: AM IBOC Exciter

Dimensions

The AM IBOC Exciter is a rack-mountable unit with the following dimensions:

• Height: 1U, or 4.4 cm (1.75 inches)

• Width: 48.3 cm (19 inches)

• Depth: 63.5 cm (25 inches)

Clearances

Ensure that the clearances at the front and the rear of the AM IBOC Exciter's host cabinet allow sufficient room for easy installation and operation. Allow at least 1U (1.75 inches) of clearance above the AM IBOC Exciter for adequate ventilation. There are no clearance requirements for the space on either side of the AM IBOC Exciter.

Weight

The AM IBOC Exciter weighs approximately 15 lbs (6.8 kg).

CAUTION: Do not block the vents in the top cover. This is especially important in higher ambient temperature environments.


Page 1-4 Issue 0.05 2009-11-12

Cooling requirements

The maximum chassis temperature of the AM IBOC Exciter must not exceed 50°C (122°F). To satisfy this requirement:

• Do not allow the AM IBOC Exciter room ambient air temperature to exceed 30°C (86°F) at sea level. De-rate 3ºC (5.4ºF) per 500 m – or 2ºC (3.6ºF) per 1,000 feet – above sea level.

Example:At 1,600 m (1 mile) above sea level, maximum ambient temperature should not exceed 20.4°C (67°F). Cooler temperatures are recommended, in order to improve the reliability of the AM IBOC Exciter.

• Do not install the AM IBOC Exciter next to other warm equipment.

AM IBOC Exciter Technical Instruction Manual Pre-installation tasks

Issue 0.05 2009-11-12 Page 2-1

Section 2: Pre-installation tasks

This section provides a list of tasks that you must perform prior to delivery and installation of the AM IBOC Exciter.

1. Select a location for the AM IBOC Exciter at the transmitter site. Ensure the AM IBOC Exciter is near a standard 120 - 240 V ac power outlet.

2. Prepare the network (LAN) connection between the AM IBOC Exciter and the Exporter Plus. Consider the AM IBOC Exciter's location and the amount of other networked equipment at the transmitter site.

3. Consult your network manager for IP address information for the AM IBOC Exciter (Exgine), Exporter Plus, and gateway.

4. Order any accessories or optional equipment that you may need. See Section 3, “Parts and tools” on page 3-1.

5. Train your station technicians and operators on the use of the AM IBOC Exciter. For a list of available technical and user documents, see “Online resources” on page ix of this document. For information about Nautel training courses, go to the Nautel website at http://www.nautel.com/Training.aspx

CAUTION: FAILURE TO COMPLY WITH RECOMMENDATIONS MAY VOID

YOUR MANUFACTURER’S WARRANTY. FOR MORE INFORMATION, REVIEW

YOUR WARRANTY DOCUMENTS.

AM IBOC Exciter Technical Instruction Manual Pre-installation tasks

Page 2-2 Issue 0.05 2009-11-12

AM IBOC Exciter Technical Instruction Manual Parts and tools

Issue 0.05 2009-11-12 Page 3-1

Section 3: Parts and tools

This section describes parts associated with the AM IBOC Exciter, and tools needed during installation and routine operation.

Parts supplied by Nautel

Ac power cable

An ac power cable is included with the AM IBOC Exciter.

Documentation

See “Online resources” on page xi. for documents provided with the AM IBOC Exciter.

Parts not supplied by Nautel

Nautel does not supply some parts and materials required to complete installation. The parts you need vary with the installation requirements. The list of parts you normally provide yourself during installation include:

• 19-inch cabinet space (optional)

• Spectrum analyzer

• Digital multimeter (DMM)

AM IBOC Exciter Technical Instruction Manual Parts and tools

Page 3-2 Issue 0.05 2009-11-12

AM IBOC Exciter Technical Instruction Manual Unpacking

Issue 0.05 2009-11-12 Page 4-1

Section 4: Unpacking

To install an AM IBOC Exciter, perform the following tasks:

1. Unpack the AM IBOC Exciter from its shipping box. Make sure that you received all the components – check your packing list.

2. Remove the AM IBOC Exciter’s top cover, then remove any packing material, particularly above the CPU. Make sure that there are no loose components, and that all connectors and PCI cards are properly seated.

3. Install the AM IBOC Exciter at the transmitter site in the cabinet space you have prepared. Provide adequate support at the bottom of the AM IBOC Exciter.

4. Do not connect ac power to the AM IBOC Exciter at this time.

AM IBOC Exciter Technical Instruction Manual Unpacking

Page 4-2 Issue 0.05 2009-11-12

AM IBOC Exciter Technical Instruction Manual Connecting the AM IBOC Exciter

Issue 0.05 2009-11-12 Page 5-1

Section 5: Connecting the AM IBOC Exciter

This section describes the interconnection between the AM IBOC Exciter, Exporter Plus, UPS and associated transmitter. A typical configuration is illustrated in Figure 5.2 (on page 3-3).

Make the following connections:

• Ac and UPS Power ConnectionsUse standard 120 - 240 V ac 60 Hz line cords. A line cord (Nautel Part # JN25) that can accommodate 120 V ac operation is provided with the AM IBOC Exciter.

• Exporter Plus Link Ethernet ConnectionUse the CAT5 Ethernet cable provided with the Exporter Plus to connect to the LAN RJ45 connector.

• Magnitude OutputUse a CAT5 cable (Nautel Part # UA81, provided in the AM IBOC Exciter’s ancillary kit) to connect the MAG RJ45 connector to the associated transmitter.

• Phase OutputUse a CAT5 cable (Nautel Part # UA81, provided in the AM IBOC Exciter’s ancillary kit) to connect the PHASE RJ45 connector to the associated transmitter.

• Backup Program Source ConnectionsAs required, Use the AES/EBU AUDIO or ANALOG AUDIO XLR connector, and associated XLR cable (Nautel Part # 196-4082, provided in the AM IBOC Exciter’s ancillary kit), to accept a backup program input from a separate audio source.

• 10 MHz ConnectionIf the 10 MHz sync signal is not provided over the LAN connection to the Exporter Plus, use the 10 MHz IN BNC connector to accept the Exporter Plus’ 10 MHz output.

• 1 PPS ConnectionIf the 1 PPS signal is required, use the 1 PPS IN BNC connector to accept the Exporter Plus’ 1 PPS output.

• Station InterfaceUse the 8-position terminal block (below the LAN connector) to connect remote inputs and outputs to the AM IBOC Exciter (see Section 7, “Remote interfacing” on page 7-1 for remote connection details). An 8-pole mini-plug (Nautel Part # JU33) is provided in the AM IBOC Exciter’s ancillary kit to facilitate these connections.

AM IBOC Exciter Technical Instruction Manual Connecting the AM IBOC Exciter

Page 5-2 Issue 0.05 2009-11-12

• Transmitter Sample InputsNot used for current configurations.

Figure 5.1: AM IBOC Exciter: back panel

Ac Input

LAN

StationInterface

AES/EBUAudio

Mag Phase RFMonitor

1 PPS

10 MHzInput

InputRS232DebugPort

AnalogAudio

1


Issue 0.05 2009-11-12 Page 5-3

Figure 5.2 AM IBOC Exciter Connections, AM system (XR, XL, NA* series and J1000)

1 PPS IN

MAGMAG

B1980504 VA

120 VAC

1 PPS

LANETHERNET

RF OUT

AM IBOC

PHASE

MONITOR

PHASE

ALTERNATEPROGRAM

FROM 10 MHz

EXCITER

FROM UPS

EXPORTER PLUS 10 MHZ IN TO TRANSMITTER

FROM ANALOGAUDIO SOURCE

AES/EBU AUDIOorANALOG AUDIO

1. UPS is optional, but generally recommended to ensure fastest possible recovery from ac brown-out conditions.

2. Analog audio to the exciter is used as a backup.

1

2

* Upgrade may be required

TRANSMITTER MAG PHASE

J1000 A1A2J2 A1A2J3

ND A2A8J1 A2A8J4

XL A2A5J1 A2A5J4

XR A2A6J10 A2A6J11

Required connection

Optional (not required) connection

AM IBOC Exciter Technical Instruction Manual Quick setup procedure

Issue 0.05 2009-11-12 Page 6-1

Section 6: Quick setup procedure

This section provides information on setting up the AM IBOC Exciter with the goal of being on-air with an IBOC signal.

• Starting the AM IBOC Exciter - see page 6-2

• Setting the carrier frequency - see page 6-3

• Setting the IP address - see page 6-3

• Configuring presets - see page 6-4

• Calibrating mag/phase delay and dc offset - see page 6-5

Note: Refer to Section 8, “Operating” on page 8-1 for a complete hierarchy of all user interface (UI) menu options as well as more detailed information on any of the UI pages referenced in this section.


Page 6-2 Issue 0.05 2009-11-12

Starting the AM IBOC Exciter

Prior to starting this procedure, ensure that the IBOC carriers cannot be broadcast, either by muting the exciter, or by disconnecting the LAN connection from the AM IBOC Exciter.

1. Turn on an audio processor (or audio processors) and verify that the audio is OK

2. Turn on the AM IBOC Exciter using the front panel on/off switch.

The system will boot up (for about ten seconds). During initialization the LEDs on the left-hand side of the AM IBOC Exciter’s UI (see Figure 6.1) will cycle through red/green/blank. Once initialized the LEDs will settle on their actual status.

Figure 6.1: AM IBOC Exciter UI

Note: Refer to Section 8, “Operating” on page 8-1 for detailed information on any of the user interface pages referenced in this section.

Navigational ButtonsLCD DisplayLEDs Cursor


Issue 0.05 2009-11-12 Page 6-3

Setting the carrier frequency

Set the carrier frequency as follows:

Figure 6.2: Setting Carrier Frequency

1. From the UI’s Edit Settings menu, select Carrier Frequency (see Figure 6.2).

2. Verify the carrier frequency is set correctly. If not, adjust it and press the accept (checkmark) button.

Setting the IP address

Set the AM IBOC Exciter’s Exgine IP address as follows:

Figure 6.3: Setting Exgine IP Address

1. From the UI’s Edit Settings - LAN Settings menu, select Exgine IP Address (see Figure 6.3).

2. Set the Exgine’s IP address. Other network parameters such as Exporter Plus IP, netmask and gateway are factory defaulted (see Figure 8.18 on page 8-14); adjust as required.

3. From the UI’s Edit Settings - Link Protocol menu, set Link Protocol to UDP.

4. Verify that all four UI LEDs glow green, indicating that the connection is OK and the associated Exporter Plus is operating normally.

Factory default shown; adjust as required


Page 6-4 Issue 0.05 2009-11-12

Configuring presets

Configure an operating preset and a backup preset for the AM IBOC Exciter as follows:

Figure 6.4: Preset Editing Menu

1. From the UI’s Edit Settings - Edit Presets menu, select Edit Preset 1 through 6 to access the editing menu (see Figure 6.4).

2. From the Signal Settings menu (see Figure 6.5), set or verify signal parameters as desired. Typical settings are shown in “Signal settings” on page 8-10. Adjustments to the Mag/Phase Delay and Mag DC Offset may be necessary during Calibrating mag/phase delay and dc offset - see page 6-5.

Figure 6.5: Signal Settings Menu

3. From the Audio Settings menu (see Figure 6.6), configure the audio input source and select the desired low pass filtering (if used).

Figure 6.6: Audio Settings Menu


Issue 0.05 2009-11-12 Page 6-5

4. From the Backup Settings menu (see Figure 6.7), configure the condition which causes a changeover to the backup preset and also select the preset that will serve as the analog backup.

Figure 6.7: Backup Settings Menu

Calibrating mag/phase delay and dc offset

Use a spectrum analyzer to adjust the Mag/Phase Delay and DC Offset values for optimum IBOC operation.

1. If your AM IBOC Exciter is replacing a Nautel NE IBOC-AM exciter, proceed to Step 4. If not, continue to Step 2.

2. Turn off the associated transmitter and remove (disable) its ac power source.

3. Using Table 6.1 on page 6-6 as a guide, perform modifications to your transmitter that are required for IBOC operation. Note that for XL series transmitters, several variations of PWB nomenclature (e.g., NAPE70, NAPE70A and NAPE70B) are listed in the PWB to Modify column. Choose the nomenclature that applies to your transmitter. When modifications are complete, restore the transmitter to operation.

4. In the AM IBOC Exciter UI’s Edit Settings - Edit Presets menu, select the appropriate digital preset (Edit Preset 1 through 6) to access the Mag DC Offset and Mag/Phase Delay screens (see Figure 6.8 on page 6-7).

5. If possible, operate the associated AM transmitter into a suitably rated dummy load and then press RF Off.

6. Turn off the analog modulation source and use the UI’s Digital Carriers menu to turn OFF the digital modulation.

Note: Depending on your transmitter type and whether you are replacing a pre-existing Nautel NE IBOC-AM exciter, you may need to modify the transmitter before proceeding.


Page 6-6 Issue 0.05 2009-11-12

Table 6.1: Transmitter Modifications for IBOC Operation

Transmitter PWB to Modify Modification(s)

XR series

RF Drive Buffer PWB (1) Install EXCTR A jumper (E1) in the EXT position.(2) Install SENSITIVITY jumper (E3) in the LOW position.

Remote Interface PWB (1) Install E19 in the desired SINGLE or DIFF position and apply a ground to J3-23.

J1000

Remote Interface PWB (1) Install EXCITER A jumper (E1) in the HD-R position.(2) Install EXCITER B jumper (E2) in the AUDIO position.(3) Install E7 in the HD-R (B) position.

RF Synthesizer PWB (exciter A)

RF Synthesizer PWB (exciter B), if installed

(1) Remove IC U12 and place in anti-static bag.(2) Install RF DRIVE jumper (E4) in the EXT position.

(1) Install RF DRIVE jumper (E4) in the INT or EXT position, depending on the analog operating mode.

XL Series

Exciter Interface PWB (1) Remove resistor R7.(2) Set switch S1 in the DUAL AUDIO position.

NAPE68 RF Drive PWB (exciter A only)

or

NAPE70 or NAPE70A RF Synthesizer PWB

or

NAPE70B or NAPE70C RF Synthesizer PWB(exciter A only)

(1) Install jumper E1 in the EXT position.(2) Install jumpers E3 and E4 in the RFA position.

(1) Remove IC U12 and place in anti-static bag (exciter A only).(2) Remove resistors R24 and R27 (both exciters)(3) Install RF DRIVE jumper (E4) in the EXT position (exciter A only).

(1) Remove IC U12 and place in anti-static bag.(2) Install RF DRIVE jumper (E4) in the EXT position.

Interphase PDM Driver PWB (exciter A only)

(1) Remove IC U4 and place in anti-static bag.(2) Install jumpers E1 through E5 in the DAB position.(3) Adjust AUDIO GAIN potentiometer R31 four turns counter-clockwise, then two turns clockwise.

ND Series

RF Drive PWB (1) Remove resistor R2.(2) Install jumper E1 in the EXT position.

Modulator Drive PWB (1) Remove IC U4 and place in anti-static bag.(2) Install jumpers E3 through E6 in the DAB position.(3) Adjust AUDIO GAIN potentiometer R34 four turns counter-clockwise, then two turns clockwise.

Note: The modifications in Table 6.1 assume that exciter A is operating as digital (IBOC) and exciter B (as applicable) is operating as analog.


Issue 0.05 2009-11-12 Page 6-7

Figure 6.8: Mag/Phase and Dc Offset Adjustment Screens

Table 6.2: Transmitter Adjustments

7. Verify the Mag DC Offset value is set to 0.0000 V or its pre-defined value, as indicated on the factory provided configuration sheet.

8. Verify the Mag/Phase Delay is set to the initial setting listed in Table 6.2.

9. See Table 6.2 for your specific transmitter. Using a digital multimeter monitor the appropriate test point for the associated AM transmitter. Adjust the appropriate MAG GAIN potentiometer until the multimeter reads the desired voltage. For XR series transmitters, you may need to adjust the AM IBOC Exciter’s output level (see “Signal output configuration” on page 8-19) to achieve 1.4 V on the associated test point.

10. In the AM IBOC Exciter’s UI, set Digital Carriers to ON.

Transmitter Desired Voltage and Test Point Location

Mag Gain Potentiometer

Carrier Gain Potentiometer

Initial Mag/Phase Delay Setting (us)

XR series 1.4 V at TP6 of exciter A’s interphase PDM driver PWB

R127 of remote interface PWB

R31 of exciter A’s interphase PDM driver PWB

125

J1000 1.4 V at TP6 of exciter A’s interphase PDM driver PWB

R36 of remote interface PWB


130

XL Series 1.39 V at TP7 of exciter A’s interphase PDM driver PWB

R7 of IBOC interface PWB


125

ND Series 1.96 V at TP8 of exciter A’s modulator driver PWB

R7 of IBOC interface PWB

R37 of exciter A’s modulator driver PWB

N/A


Page 6-8 Issue 0.05 2009-11-12

11. Press RF On and adjust the associated transmitter to the required power level.

12. Monitor the transmitter’s RF output with a spectrum analyzer set for the carrier frequency, a span of 100 kHz, RBW of 300 Hz, and a VBW of 300 Hz. For initial adjustments, set averaging for a sample detection (or peak, if there is no sample; DO NOT USE RMS). For the final measurement to verify that the output is within FCC limits, set averaging for a 30 second period.

13. Adjust the Mag/Phase Delay value to optimize the digital output spectrum (see Figure 6.9 for an example of an optimized output spectrum).

14. It may be possible to further improve the digital output spectrum. Adjust the Mag DC Offset value in small increments. Note that the transmitter output power will be directly affected by this adjustment and should be corrected (increased or decreased) from the transmitter’s front panel. Do not exceed a Mag DC Offset value of 100 mV.

Figure 6.9: Example of an Optimized Transmitter Output Spectrum

Note: Allow sufficient time for the averaging function to stabilize the spectrum analyzer’s reading between adjustments.


Issue 0.05 2009-11-12 Page 6-9

15. If necessary, adjust the appropriate CARRIER GAIN TRIM potentiometer (see Table 6.2 on page 6-7) to balance the output power between exciter A and exciter B.

16. Verify the transmitter’s output spectrum is within FCC limits.

17. Turn on the analog modulating source and use the UI’s Digital Carriers menu to turn OFF the digital modulation.

18. Adjust the analog modulating source output to maintain proper modulation levels. If the required modulation depths cannot be reached, adjust the Analog Gain value in the AM IBOC Exciter’s UI, also located in the Signal Settings menu.

19. When adjustments are complete, set Digital Carriers to ON.

20. Turn off the transmitter and connect it to the antenna.

21. While continuing to monitor the transmitter’s RF output with a spectrum analyzer, readjust the Mag DC Offset and Mag/Phase Delay to optimize the digital output spectrum.

22. Record all signal settings for future reference.

Note: An Analog Gain setting of 100% corresponds to 0 dB full-scale gain applied to the audio.


Page 6-10 Issue 0.05 2009-11-12

AM IBOC Exciter Technical Instruction Manual Remote interfacing

Issue 0.05 2009-11-12 Page 7-1

Section 7: Remote interfacing

This section describes remote control and monitoring of the AM IBOC Exciter.

The STATION INTERFACE connector (8-position terminal block) on the back of the AM IBOC Exciter contains two digital inputs and three digital outputs. Inputs allow you to select between the day and night presets of the AM IBOC Exciter. Outputs provide status of various HD data and audio alarms.

See Table 7.1 for a list of the digital inputs and outputs, interfacing logic levels, functional description, and STATION INTERFACE pin number.

Install suitable wiring in the 8-pole mini-plug provided (Nautel Part # JU33 in the ancillary kit) and mate it to the STATION INTERFACE connector. Route the other end of the wires to the remote control/monitoring location.

Table 7.1: Station Interface Connector Digital Inputs

Signal Direction (Level) Function Pin

Day Input (Open/Ground) Selects the day preset. 1 (ground on 2)

Night Input (Open/Ground) Selects the night preset. 3 (ground on 4)

HD Data Missing Output (3.3 V/Ground) Indicates status of HD Data Missing alarm. 5

Audio Inhibited Output (3.3 V/Ground) Indicates status of Audio Inhibited alarm. 6

Audio Missing Output (3.3 V/Ground) Indicates status of Audio Missing alarm. 7

AM IBOC Exciter Technical Instruction Manual Remote interfacing

Page 7-2 Issue 0.05 2009-11-12

AM IBOC Exciter Technical Instruction Manual Operating

Issue 0.05 2009-11-12 Page 8-1

Section 8: Operating

This section provides information about operating the AM IBOC Exciter:

• User interface - see page 8-2

– LCD display - see page 8-2– Navigational buttons - see page 8-2– LEDs - see page 8-2– UI menus - see page 8-5

• Main menu - see page 8-6

• Edit presets - see page 8-9

– Signal settings - see page 8-10– Audio settings - see page 8-11– Backup settings - see page 8-12– Copy another preset - see page 8-13

• Carrier frequency - see page 8-13

• LAN settings - see page 8-14

• Display settings - see page 8-15

• Power switch setting - see page 8-16

• Day/night settings - see page 8-17

• Audio input levels - see page 8-18

• Signal output configuration - see page 8-19

• Calibrate exciter TCXO - see page 8-20

• Configure test signal generator - see page 8-20

• View status - see page 8-23


Page 8-2 Issue 0.05 2009-11-12

User interface

The AM IBOC Exciter’ user interface (UI) is 4 x 20 character LCD display on the front panel (see Figure 8.1). The UI can be controlled by its adjacent keypad. The UI contains a menu-based series of pages that serve specific functions (see“UI menus”).

Figure 8.1: AM IBOC Exciter UI

LCD display

This screen displays all the UI pages. See Figure 8-2 and Figure 8-3 for a complete hierarchy of the UI menus. See Table 8.1 on page 8-5 for a list of the menus and their basic functions.

Navigational buttons

There are six push-buttons on the right-hand side of the LCD display that allow navigation through the UI pages.

– Up and down - move cursor up and down through the associated page– Left - go to the next higher level menu screen, as applicable– Right - go to the next lower level menu screen, as applicable– Checkmark - acts as an “accept” function; display will prompt its use– X - acts as a “cancel” function; display will prompt its use

LEDs

There are four LEDs on the left-hand side of the LCD display that provide operational status. The LEDs can glow green, yellow or red. Typically, green indicates normal operation, yellow indicates a warning, and red indicates a fault or error.

Refer to the Troubleshooting section (section 9) for more detailed information on LED status.

Navigational Buttons

LCD Display

LEDs CursorPreset

FrequencyActive Preset

Output Signal Type

Issue 0.05 2009-11-12 Page 8-3

Figure 8-2: AM IBOC Exciter UI Hierarchy (Sheet 1 of 2)

Select PresetMAIN MENU

AudioSettings

BackupSettings

Edit Settings Edit Preset1-6

SignalSettings Mag/Phase Delay

Mag DC Offset

Upper Primary Level

Lower Primary Level

Analog Gain

Digital Carriers

Input Source

Low Pass Filter

* Pre-emphasis Filter

* AM Mode

* Displayed for analog presets only

Backup Condition

Backup Preset

Copy AnotherPreset

CarrierFrequency

LANSettings Exgine IP Address

Exporter IP Address

Netmask

Gateway

Link Protocol

Issue 0.05 2009-11-12 Page 8-4

Figure 8-3: AM IBOC Exciter UI Hierarchy (Sheet 2 of 2)

Edit Settings DisplaySettings LCD Contrast

LCD Backlight

Backlight Timeout

Test SignalGenerator Test Signal Type

**Test Signal Level

**Start Frequency

**Stop Frequency

**Sweep Time

PowerSwitch

Day/NightSettings Day Setting

Night Setting

Audio InputLevels AES Input Level

Balanced Analog Level

Calibrated Balanced Analog

SignalOutput Output Level

Output Format

CalibrateExciter TCXO

** Displayed for specific test signals only

EQSettings

View Status ViewAlarms

ViewEvents Log

ViewHardware

ViewSoftware

ViewModulation

ViewExgine Stats

Help


Issue 0.05 2009-11-12 Page 8-5

UI menus

Table 8.1: UI Menus

UI Menu Name Function Page

No name (top level) Allows entry to four sub-menus - Select Preset, Edit Settings, View Status and Help.

8-6

Select Preset Select the active programmed preset (1 through 6). 8-7

Edit Settings - Edit Presets

Edit the settings for any of the six presets, including signal settings, audio settings and copying other presets.

8-9

Edit Settings - Carrier Frequency

Set the carrier frequency for the AM IBOC Exciter. 8-13

Edit Settings - LAN Settings

Set the network parameters such as Exgine IP address, Exporter Plus IP address, netmask and gateway.

8-14

Edit Settings - Display Settings

Adjust the LCD display’s contrast, brightness and backlighting. 8-15

Edit Settings - Power Switch

Enable or disable the front panel power switch. 8-16

Edit Settings - Day/Night Setting

Select the preset associated with day and night settings. 8-17

Edit Settings - Audio Input Levels

Configure the levels for the AES and analog input sources. 8-18

Edit Settings - Signal Output

Configure the signal output level and format (mag/phase or RF). 8-19

Edit Settings - Calibrate Exciter TCXO

Perform a calibration of the exciter’s TCXO. 8-20

Edit Settings - Test Signal Generator

Configure the test signal’s type and other applicable parameters such as test signal level, start/stop frequencies and sweep time.

8-20

Edit Settings - EQ Settings

Configured at factory. Not intended for customer use. N/A

Status View status of alarms, event log, hardware settings, software versions, modulation, and Exgine statistics.

8-23


Page 8-6 Issue 0.05 2009-11-12

Main menu

All navigation through the UI begins on the main menu shown in Figure 8.4.

Figure 8.4: Main Menu

This menu has four sub-menu options:

• Select Preset - allows selection of the active preset (see Select preset on page 8-7).

• Edit Settings - allows access to all configurable parameters and settings for the AM IBOC Exciter (see Edit settings on page 8-7).

• View Status - allows monitoring of AM IBOC Exciter status, including alarms, event log, hardware settings, software versions, modulation, and Exgine statistics (see View status on page 8-23).

• Help - provides scrollable text to assist with UI navigation.

Use the up and down buttons to move the cursor to the desired option and then press the right button to open the selected menu.


Issue 0.05 2009-11-12 Page 8-7

Select preset

You can select the AM IBOC Exciter’s active preset using the Select Preset menu (see Figure 8.5).

Figure 8.5: Select Preset Menu

Use the up and down buttons to select the desired preset (1 through 6). Press the accept button to actvate the new preset.

Edit settings

You can configure various parameters of the Exporter Plus in the Settings menu (see Figure 8.6).

Figure 8.6: Settings Menu


Page 8-8 Issue 0.05 2009-11-12

This menu has ten sub-menu options:

• Edit Presets - allows editing of any of six presets, including signal settings, audio settings and copying other presets (see “Edit presets” on page 8-9).

• Carrier Frequency - allows editing of the carrier frequency (see “Carrier frequency” on page 8-13).

• LAN Settings - allows configuration of the AM IBOC Exciter network information such as Exgine IP address, Exporter Plus IP address, netmask and gateway (see “LAN settings” on page 8-14).

• Display Settings - allows setting of the LCD display’s contrast, brightness and backlighting (see “Display settings” on page 8-15).

• Power Switch - allows configuration of the AM IBOC Exciter’s front panel power switch (see “Power switch setting” on page 8-16).

• Day/Night - allows selection of the presets used for day and night (see “Day/night settings” on page 8-17).

• Audio Input Levels - allows for configuration of the levels for the AES and analog input sources (see “Audio input levels” on page 8-18).

• Signal Output - CONSULT NAUTEL BEFORE ALTERING! Allows for configura-tion of the signal output level and format (mag/phase or RF) (see “Signal output configura-tion” on page 8-19).

• Cal. Exciter TCXO - CONSULT NAUTEL BEFORE ALTERING! Allows calibration of the exciter TCXO (see “Calibrate exciter TCXO” on page 8-20).

• Test Signal Gen. - allows for configuration of the test signal’s type and other applicable parameters such as test signal level, start/stop frequencies and sweep time (see “Configure test signal generator” on page 8-20).

• EQ Settings - CONSULT NAUTEL BEFORE ALTERING! Not intended for customer use.

Use the up and down buttons to move the cursor to the desired option and then press the right button to open the selected menu.


Issue 0.05 2009-11-12 Page 8-9

Edit presets

From the Edit Presets menu (see Figure 8.7) you can edit any of the six presets.

Figure 8.7: Edit Presets Menu

Use the up and down buttons to move the cursor to the desired preset and then press the right button to open the selected preset’s editing options screen (see Figure 8.8). The assigned operating mode for each preset is indicated in parentheses (e.g., HD or AM). The active preset is indicated by a music note in the upper, right-hand corner of the LCD display.

Figure 8.8: Presets Editing Options Screen

There are four sub-menu options:

• Signal Settings - allows editing of mag/phase delay, mag dc offset, upper and lower primary levels, analog gain, and digital carrier status (on or off) (see “Signal settings” on page 8-10).

• Audio Settings - allows configuration of the audio input source and low pass filtering, as applicable (see “Audio settings” on page 8-11).

• Backup Settings - allows configuration of a backup preset that can become operational if the HD signal on the main preset is lost (see “Backup settings” on page 8-12).

• Copy Another Preset - allows copying the settings of one preset into another (see “Copy another preset” on page 8-13).

Use the up and down buttons to move the cursor to the desired option and then press the right button to open the selected option’s screen.


Page 8-10 Issue 0.05 2009-11-12

Signal settings

When you select Signal Settings from the Preset editing options screen, you can edit various signal parameters (see Figure 8.9). Note the preset being edited is displayed in parentheses [e.g., (P1)].

Figure 8.9: Signal Settings Screen

Use the up and down buttons to move the cursor to the desired parameter and then press the right button to enable editing of the selected parameter. Figure 8.10 shows all the editing screens for the Signal Settings menu. Within any of the editing screens, use the up and down buttons to edit a parameter value, then press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu.

Figure 8.10: Signal Settings Editing Screens

Note: An Analog Gain setting of 100% corresponds to 0 dB full-scale gain applied to the audio.


Issue 0.05 2009-11-12 Page 8-11

Audio settings

When you select Audio Settings from the Preset editing options screen, you can configure audio input characteristics (see Figure 8.11). Note the preset being edited is displayed in parentheses [e.g., (P1)].

Figure 8.11: Audio Settings Screen

Use the up and down buttons to move the cursor to the desired parameter and then press the right button to enable editing of the selected parameter. Figure 8.12 shows the editing screens for the Audio Settings menu. Note that the Premphasis Filter and AM Mode options appear for analog presets only. Within any of the editing screens, use the up and down buttons to edit a parameter setting, then press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu.

Figure 8.12: Audio Settings Editing Screens

Displayed for analogpresets only

Select:Serial I/Q: IBOC,AES: AM, orBalanced Analog: AM

Select:Disabled orany frequency between1000 Hz and 10 kHz.

For analog presets only,Select:ON or OFF

For analog presets only,Select:Mono AM, DCC2, DCC1, Full DAM,Basic DAM, EAMC, AMC, AM StereoC-QUAM.


Page 8-12 Issue 0.05 2009-11-12

Backup settings

When you select Backup Settings from the Preset editing options screen, you can configure a preset that will act as the backup in the event that active preset’s audio is lost (see Figure 8.13). Note the preset being edited is displayed in parentheses [e.g., (P1)].

Figure 8.13: Backup Settings Screen

Use the up and down buttons to move the cursor to Backup Condition or Backup Preset and then press the right button to enable editing of the selected parameter. Figure 8.14 shows the editing screens for the Backup Settings menu. Within either of the editing screens, use the up and down buttons to edit a parameter setting, then press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu.

Figure 8.14: Backup Settings Editing Screens

Select:Loss of HD - switches to backup preset if trueDisabled - will not switch to backup presetLoss of Audio - switches to backup preset if trueReacquired HD - switches back to HD preset if true


Issue 0.05 2009-11-12 Page 8-13

Copy another preset

When you select Copy Another Preset from the Preset editing options screen (see Figure 8.15), you can copy the settings from another preset into the preset that is being edited. Note the preset being edited is displayed in parentheses [e.g., (P1)].

Figure 8.15: Copy Another Preset Screen

Use the up and down buttons to select the preset (1 through 6) that you wish to copy to the selected preset for editing. Press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu.

Carrier frequency

From the Carrier Frequency screen (see Figure 8.16) you can set the AM carrier frequency.

Figure 8.16: Carrier Frequency Screen

Use the up and down buttons to edit the carrier frequency. Press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu.


Page 8-14 Issue 0.05 2009-11-12

LAN settings

From the LAN Settings menu (see Figure 8.17) you can configure the Exgine and Exporter IP addresses, the netmask address, gateway adress and link protocol.

Figure 8.17: LAN Settings Menu

Use the up and down buttons to move the cursor to the desired LAN setting and then press the right button to enable editing of the setting. Figure 8.18 shows the editing screens for the LAN Settings menu. Within any of the editing screens, use the left and right buttons to select the desired characters for editing and use the up and down buttons to edit a setting. Press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu.

Figure 8.18: LAN Settings Editing Screens

Select UDP or TCP

Factory defaults shown; adjust as required


Issue 0.05 2009-11-12 Page 8-15

Display settings

You can configure the LCD display’s contrast, brightness and backlight settings using the Display Setttings menu (see Figure 8.19).

Figure 8.19: Display Settings Menu

This menu has three sub-menu options:

• LCD Contrast - sets the display contrast.

• LCD Backlight - sets the brightness of the display’s backlight during normal use.

• Backlight Timeout - sets a time delay, after a period of non-use, that the brightness of the display’s backlight will dim.

Use the up and down buttons to move the cursor to the desired display setting and then press the right button to enable editing of the setting. Figure 8.20 shows the editing screens for the Display Settings menu. Within any of the editing screens, use the up and down buttons to edit a setting. Press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu.

Figure 8.20: Display Settings Editing Screens

Changes in 5 s intervals


Page 8-16 Issue 0.05 2009-11-12

Power switch setting

You can configure the AM IBOC Exciter’s front panel power switch using the Power Switch screen (see Figure 8.21).

Figure 8.21: Power Switch Screen

Use the up and down buttons to toggle the setting between Enabled, Disabled and Enabled with warning, noting the following:

• Enabled - Allows (enables) the power switch to function normally and switch on or off the AM IBOC Exciter.

• Disabled - Disables the power switch so that it cannot switch on or off the AM IBOC Exciter.

• Enabled with warning - Allows (enables) the power switch to function normally and switch on or off the AM IBOC Exciter. Upon turn-off, a warning screen is displayed, and the power switch must be held for ten seconds before the AM IBOC Exciter switches off.


Issue 0.05 2009-11-12 Page 8-17

Day/night settings

You can configure the active preset for daytime and nightime operation using the Day/Night Setting menu (see Figure 8.22).

Figure 8.22: Day/Night Settings Menu

Use the up and down buttons to move the cursor to Day or Night and then press the right button to enable editing of the active preset (note that currently preset is also displayed). Figure 8.23 shows the editing screens for the Day/Night Setting menu. Within either of the editing screens, use the up and down buttons to change the preset used for that setting. Press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu.

Figure 8.23: Day/Night Settings Editing Screens


Page 8-18 Issue 0.05 2009-11-12

Audio input levels

From the Audio Input Levels menu (see Figure 8.24) you can configure the levels for the AES and analog input sources.

Figure 8.24: Audio Input Levels Menu

Use the up and down buttons to move the cursor to the desired audio input and then press the right button to enable editing of the level. Figure 8.25 shows the editing screens for the Audio Input Levels menu. Within any of the editing screens, use the up and down buttons to edit a level. Press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu.

Figure 8.25: Audio Input Levels Editing Screens

Allows calibration of the analog input. Nautelcalibrates this for 10.000 dBm using anaccurate source. User calibration should not berequired.


Issue 0.05 2009-11-12 Page 8-19

Signal output configuration

From the Signal Output menu (see Figure 8.26) you can configure the type of output from the AM IBOC Exciter. This menu is not intended for customer use. Consult Nautel before editing any parameters in this menu.

Figure 8.26: Signal Output Menu

Use the up and down buttons to move the cursor to Output Level or Output Format and then press the right button to enable editing. Figure 8.27 shows the editing screens for the SIgnal Output menu. Within either of the editing screens, use the up and down buttons to edit the setting. Press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu.

Figure 8.27: Signal Output Editing Screens

Select:Mag/Phase Output orRF Output


Page 8-20 Issue 0.05 2009-11-12

Calibrate exciter TCXO

From the Cal. Exciter TCXO menu (see Figure 8.28) you can calibrate the AM IBOC Exciter’s TCXO. The AM IBOC Exciter must be off-air during this procedure. Nautel performs this procedure at the factory. User calibration should not be required.

Figure 8.28: Calibrate Exciter TCXO Screen

Press the accept (checkmark) button to begin the calibration. The display indicates the progress of the calibration, which takes approximately one minute to complete.

Configure test signal generator

From the Test Signal Gen. menu (see Figure 8.29) you can configure the test signal output of the AM IBOC Exciter. Note that a different menu may appear depending on the currently configured test signal type.

Figure 8.29: Test Signal Generator Menus

Displayed when there is no test signalor when it is set to MA-1 or MA-3

Displayed when test signal is MA-1White Noise, MA-1 Single Tone, WhiteNoise or Single Tone

Displayed when test signal is ToneSweep or MA-1 Tone Sweep


Issue 0.05 2009-11-12 Page 8-21

Use the up and down buttons to move the cursor to the desired line item and then press the right button to enable editing. The following test signals are available:

• None - no test signal

• MA-3 (available for HD mode only)

• MA-1 (available for HD mode only)

• MA-1 White Noise (available for HD mode only) - also allows setting of test signal level and start frequency.

• MA-1 Single Tone (available for HD mode only) - also allows setting of test signal level and start frequency.

• MA-1 Tone Sweep (available for HD mode only) - also allows setting of test signal level, start frequency, stop frequency and sweep time.

• White Noise - adds to audio content; allows setting of test signal level and start frequency (in this case, noise bandwidth).

• Single Tone - adds to audio content; also allows setting of test signal level and start fre-quency.

• Tone Sweep - adds to audio content; also allows setting of test signal level, start frequency, stop frequency and sweep time.

Figure 8.30 on page 8-22 shows the editing screens for the Test Signal Gen. menu. Within any of the editing screens, use the up and down buttons to edit the setting. Press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu.

Note: The options listed above represent internally generated IBOC data that is intended for spectral tests only.


Page 8-22 Issue 0.05 2009-11-12

Figure 8.30: Test Signal Generator Editing Screens

Select:None, MA-3, MA-1, MA-1 White Noise,MA-1 Single Tone, MA-1 Tone Sweep,White Noise, Single Tone, Tone Sweep


Issue 0.05 2009-11-12 Page 8-23

View status

You can view the operational status of the AM IBOC Exciter using the View Status menu (see Figure 8.31).

Figure 8.31: View Status Menu

Use the up and down buttons to select the desired item for viewing and then press the right button to view the details. See Figure 8.32 through Figure 8.37 for the viewing screens associated with each selection.

Press the accept (checkmark) button within the Event Log screen to clear the log entries.

Figure 8.32: View Alarms Screen

Figure 8.33: View Event Log Screen

Press to clear events log


Page 8-24 Issue 0.05 2009-11-12

Figure 8.34: View Hardware Screen

Figure 8.35: View Software Versions Screen


Issue 0.05 2009-11-12 Page 8-25

Figure 8.36: View Modulation Screens


Page 8-26 Issue 0.05 2009-11-12

Figure 8.37: View Exgine Stats Screen

Note: The Exgine Statistics screen is useful for debugging LAN faults.

RUN indicates normal operation. May alsodisplay SYNC or INIT.

Both RX (receive) values should increaseduring normal operation. If not, there may bea poor connection with the Exporter Plus.

MAC address of Exgine card

AM IBOC Exciter Technical Instruction Manual Troubleshooting

Issue 0.05 2009-11-12 Page 9-1

Section 9: Troubleshooting

The fastest way to determine the AM IBOC Exciter’s status is by viewing the front panel user interface (UI). The View Status menu of the LCD display can assist in diagnosing a fault as well as the four LEDs adjacent the display. When there are alarms, or the AM IBOC Exciter is no longer operational, these LEDs will turn red.

The features described above allow the user to determine the AM IBOC Exciter’s operational status at almost any time. In the event that the AM IBOC Exciter becomes non-operational, some simple troubleshooting procedures can be followed to return it to operational status. This section outlines some common errors and warnings that may occur, along with the procedures to correct each problem.

The following troubleshooting information is included in this section:

• LED indications - see page 9-2

• Network related alarms - see page 9-4

• Audio related alarms - see page 9-4

• Checking cable connections - see page 9-5

• Parts information - see page 9-6

• Electrical schematics - see page 9-9

Note: It is highly recommended that troubleshooting personnel be familiar with the operation of the AM IBOC Exciter. Refer to the Operating section of this manual as an aid in troubleshooting.


Page 9-2 Issue 0.05 2009-11-12

LED indications

There are four LEDs on the left-hand side of the LCD display that provide operational status for the AM IBOC Exciter (see Figure 9.1). The LEDs can glow green, yellow or red. Typically, green indicates normal operation, yellow indicates a warning, and red indicates a fault or error.

Figure 9.1: Front Panel LEDs

Table 9.1 on page 9-3 lists possible root causes for LEDs that are in a warning (yellow) or alarm (red) condition).

LEDs


Issue 0.05 2009-11-12 Page 9-3

Table 9.1: LED Status and Root Causes

LED Colour Possible Root Causes

StatusGreen The AM IBOC Exciter is producing a valid output.

Red The AM IBOC Exciter is not producing a valid output.

Lan

Yellow Exgine is initializing.

Red Exgine has initialized, but no Ethernet connection has been detected.

Green There is a successful Ethernet connection.

AudioGreen The selected audio is present.

Red The selected audio is not present.

Red The AM IBOC Exciter is in HD mode, but the Exgine is not providing valid data.

HD Data Green The AM IBOC Exciter is in HD mode and is providing HD data.

Off The AM IBOC Exciter is not in HD mode.


Page 9-4 Issue 0.05 2009-11-12

Network related alarms

There are several network related faults that can affect the operating status of the AM IBOC Exciter. Use the Edit Settings > LAN Settings menu on the UI to check settings.

• Verify that the Exgine IP address matches the destination IP that is configured in the Exporter Plus. If the AM IBOC Exciter is connected to the same subnet as the Exporter Plus, use a PC connected to the network to ‘ping’ the AM IBOC Exciter IP addresses (see Figure 9.2) to verify that the AM IBOC Exciter is accessible.

• Refer to the Exporter Plus Technical Instruction Manual for further troubleshooting.

Figure 9.2: Typical Ping Command

Audio related alarms

There are several ways to check the audio inputs.

1. Use the View Status > View Modulation screens to verify that the audio is present.

2. Use the Edit Settings > Edit Presets > Audio Settings screen to ensure that the correct audio input is selected for the operating preset.


Issue 0.05 2009-11-12 Page 9-5

Checking cable connections

Verify that the AM IBOC Exciter’s internal cables are connected properly as follows:

1. Remove the AM IBOC Exciter’s top cover.

2. Inspect the cables and connections. If a connector is unseated or disconnected, ensure it is reconnected to its mate as identified in Table 9.2. If necessary, see Figure 9.3 on page 9-7 to identify the exporter's sub-assemblies.

Table 9.2: Connector Mating Information

Connector Mate

P1 A1J15

P2 A2J3

P3 A1J16

P4 A2J4

P5 A1J13

P6 A2J5

P7 A1J18

P9 U2H1

W1P1 A1J17

W1P2 A2J2

W2P1 U3

W2P2 A2J1

W3P1 A1J19

W3P2 A2J8


Page 9-6 Issue 0.05 2009-11-12

Parts information

For the purposes of identifying parts and possibly ordering replacements, the AM IBOC Exciter’s internal assemblies are identified in Table 9.3 and Figure 9.3 on page 9-7. The table provides the reference designation, a description, and the Nautel part number for each item. The figure shows the location of the major components.

Table 9.3: AM IBOC Exciter Plus Parts List

Reference Designation Description Nautel Part #

A1 AM IBOC Exciter Interface PWB NAPI113 or NAPI113A

A2 Exgine PWB NAPE74A

A3 Digital AM Exciter PWB NAPE78

F1 Fuse, 2A, 250V, 5x20mm, Anti-surge FA39

S1 Switch, MOM, Rocker, SPST, 15A SD68

U1 Power Supply, +/-15V, +5V, 40W, 85-264Vac/120-370Vdc UG51

U2 Display, 4 Line LCD, w Keypad, 5V RS232 UW101

U3 Connector, Coupler, RJ45, Feed-Thru, Shielded JA76

U4 Connector, Power Entry, C14, c/w fuseholder JT91


Issue 0.05 2009-11-12 Page 9-7

Figure 9.3: AM IBOC Exciter Sub-assemblies

U4, F1

A3

A1

U1

U2

A2

U3

A3 LEDsDS1 - on (solid)DS2 - on (solid)DS3 - offDS4 - on (flashing slow)

Normal Operating LED Status

A2 LEDsDS1 (Link) - on (flashing fast)DS2 - offDS3 - offDS4 - offDS5 (PS good) - on (solid)

A1 LEDsDS1 (Health) - on (flashing slow)DS2 - offDS3 - off


Page 9-8 Issue 0.05 2009-11-12

Issue 0.05 2009-11-12 Page 9-9

Figure 9-4: Electrical Schematic - AM IBOC Exciter (NAE98)

RX (-)

TX (+)TX (-)

A2W3P2

W1P2

H1

+3.3V

+5V

(N/U)GND

(N/U)(N/U)

(N/U)(N/U)

(N/U)(N/U)

(N/U)

P5

SPARE

(-)(+)

(+)(-)

P8

W3P1

W1P1

4

12

J7

J6

J5

J2

J1

A1

J3

J9

J9

J21

FS

J20

J2

J1

B

IBOC

A

IBOC

W2P1

250V

W2P2

U2

PWB

P6

GND

GND

(N/U)

P7

3

SHIELDSHIELD

FROM LAN/

RX (+)SHIELD

S2070089 VB

U4

67

4

12

L

AUDIOGPS DISPLAY

J5

J1

J8

EXGINE

COMCOM

AC/DC +5V

+15V

POWER

NIGHT

DAY

AUDIO

BALANCEDANALOG

15

P91

10 MHz

10 MHz

INTERNAL BUS (-)

SERIAL DATA (-)

STREAMING BUS DATA (-)

SERIAL CLOCK (+)STREAMING BUS DATA (+)

SERIAL FRAME (+)

J121

2

J1132

J14

J18

PWBINTERFACE

J19

SPARE

J476

N/C9

N/CN/C7

N/CGND

DEBUG45

N/CN/C2

PHASEB4

J10 MAGNITUDEB4

PHASEA4

J10 MAGNITUDEA4

RF OUTPUT

(N/U) 20

(N/U) 3

GNDGND

1821

GND 9

+5V 24+15V 13

17

2214

8

67

15

1

(N/U)(N/U)

1718

(N/U) 15

(N/U)(N/U)

810

(N/U) 5

GND(N/U)

243

GND 22

GNDGND

1220

GND 7

1CLOCK 2

13

EXPORTER SHIELD

50-60Hz

MODULEAC ENTRANCE

8

5

3

U3

N

J2

-15VV-

+5VU1V+

S11A 1

AES/EBU

16

2

AUDIO

INTERNAL BUS (+)

SERIAL DATA (+)

SERIAL CLOCK (-)

SERIAL FRAME (-)

J13

J4

3

1

EXCITERAM IBOC

J17

8

5

N/C

RXD

(RS-232)

1

6

3

8

A5

B5

A5

B5

(N/U)

GND

GND

23

5

11

-15V

+5V

25

16

12

10

(N/U)

19

1 PPS

2

19

4

(N/U)

(N/U)

(N/U)

(N/U)

11

4

16

6 A3

PWB

GND

GND

GND

DATA

21

14

23

9

25

J8

100-240VAC

76

4

21

2

6UNIVERSAL INPUT

3

8

1

CURRENT SAMPLE

VOLTAGE SAMPLE

EXT 10 MHz

EXT 1 PPS

SHIELD

EXT 10 MHz

4 STREAMING BUSBALANCED AUDIO (-)

ANALOG AES/EBU3

8 8 SERIAL CLOCKSERIAL DATA

6 6 INTERNAL BUS (-)

1 12 2 1.2MHz CLOCK

67

10 10

7 74

8 8

12

5 5

2 23 3

8 8

6 6

3 34 4

1 1 RF DRIVE (+)

DIGITALAM EXCITER

5

8

3

POWER SUPPLY

5

4

IMPORTER 1

2

# INHIBIT -

STATUS BALANCED AUDIO (+)

SHIELD

5 5

SERIAL FRAME

INTERNAL BUS (+)

7 7

8

5

3

9

6

9

6

P2J3 P1 J15

4

1

5

4

1

5

7 7

RF DRIVE (-)2 2

OUTPUT

OUTPUT

SLOW

F12A

P4J4 P3 J16

# AUDIO INHIBITED -# AUDIO MISSING -

# HD DATA MISSING -

Issue 0.05 2009-11-12 Page 9-10

Figure 9-5: Electrical Schematic - AM IBOC Exciter Interface PWB (NAPI113A) (Sheet 1 of 2)

1W

R51100

T3

0.1C69

0.1C44

0.1C43

-15V

1:1

R7656.2

(-)

(-)

(+)

(+)

2W10

R50

2W10

R43

121R84

1W

R44100

1:1

R5227.4

R4527.4

0.1C66

9 15

C381.0

R661000

C53100pF

R621000

C47100pF C59

100pF

4:1

T1

T2

825R54

R6856.2

R5956.2

R6556.2

(+)

(+)

(-)

(-)

3 J11(-)

SHIELD

2 J11(+)

(-)

2 J12(+)

EXT 1 PPS

FROM EXGINE

EXT 10MHzREAR PANEL

+15V

+15V

CURRENT SAMPLE

1 PPS

10 MHz

TO EXGINE10 MHz

13 J20

SHEET 2

2 J20 CLOCK

FS1 J20

10C56

20IREF

14RST

6BCK

4LRCK

21VCOMR

0.1C54

0.1C55 28

VCC2L

0.1C49 2

CHSL

0.1C45

16AGND3R

19AGND1

24AGND2

18IOUTR-

10MUTE

3DEM

26IOUTL-

13ZERO

0.1C64

0.0R94

0.0R93

+5V-5V

0.1C61

-15V +15V

1000R58

0.001C78

0.1C58

-15V

RF OUTPUT

B4J9 PHASE B

MAG B

B5J10

MAG A

J7

J6

1 J11

3 J12

SHIELD 1 J12

J1REAR PANEL

J2

J1610 MHz

0.1C28

220pFC68

R8210.0K

2210R83

-15V

220pFC65

2210R80

1210R85

100R2

R47681

5

6

7U9:B

R49100

5

6

7U10:B

R34100

3

2

1U10:A

6

5

7U20:B

C730.1

VOLTAGE SAMPLE

TO AM EXCITER

TO AM EXCITER

25 J20RF DRIVE

1 J21

+5V

14 J20 DATA

+3.3V

1.0C40

0.1C39

10.0KR67

7SCK

15VCC2R

5DATA

23VCC1

22VOML

C7647

12FMT1

11FMT0

9VDD

0.1C67

-5V

0.1C36

1.0C37

17IOUTR+

8DGND

27AGND3L

1MONO

5

6

7U16:B

25IOUTL+

0.1C52

R751000 1000

R74 100pFC60

R721000

-15V +15V

0.1C48

C411.0

C421.0

4

6

5

3

1

R961000

0.001C77

R571000

8

7

3

2

U14:A

R6922.1K

R7122.1K

1000R70

3

2

1U18:A

1000R61

5

6

7U15:B

R6022.1K

5

6

7U19:B

-15V

0.1C46

A4J9A5J9

B5J9

PHASE A

TP9

B4J10

TP8

A4J10

TP10

A5J10

-15V

R7910.0K

6

4

5

3

1

R35681

2

3

1U20:A

C750.1

1

2

3

U21:A

2

3

1U16:A

0.1C35

R641000

2

3

1U19:A

0.1C30

6

4

5

3

1

1000R55

2

1

7U12:A

R6322.1K

3

2

1U15:A

J8

TP7

S2070090 SHEET 1 OF 2 V1

10J20

39.2R53CURRENT SAMPLE

23J20

22J21

ANALOG AUDIO

10J21

18J21AES AUDIO

4J21

21J21

17J21

+15V

+5V

+15V

DAC_RESET

0.1C57

PCM1798DBU17

0.1C50

+5V

0.1C63

+15V

-15V

22J20

11J20

39.2R46VOLTAGE SAMPLE

CR11274R81

CR10

274R78

BALANCED

8J21BALANCED

100R1 11J21

J15

9J21

8V+

4V-U20:C

OP275GS

+5V

5LE

1VCC+

4VCC-

6GND

TL3016IDU14:B

+5V

CLOCK_1M2

+15V

0.1C51

4VDD

11GNDU9:E

TLV2374ID8

V+4

V-U10:COPA2691ID

8V+

4V-U18:C

OP275GS8

V+4

V-U19:COP275GS

1000R56

5

6

7

U13:B

3

2

1

U13:A

R731000

CR12

CR9

4ENABLE

16VCC

12ENABLE

8GND

DS26C32ATMU21:E

4ENABLE

16VCC

12ENABLE

8GND

DS26C31TMU13:E

4V+

5COMP

6V-

3SHUTDOWN

LT1210CRU12:B

0.1C27

8V+

4V-U15:C

OP275GS8

V+4

V-U16:COP275GS

5

6

7U18:B

Issue 0.05 2009-11-12 Page 9-11

Figure 9-6: Electrical Schematic - AM IBOC Exciter Interface PWB (NAPI113A) (Sheet 2 of 2)

NIGHT

DAY

C260.1

+5V-A

+5V-A

59

58

12

41

40

PB5

PB7

TXD1

RXD1

PCO

PC1

TXD0

SCK

PA0

+5V

0.1C4

0.1C1

R42100K

GND

61

60

57

PB6

PD4

PC2

PC3

RXD0

PC4

PC7

+5V-A

R410.0K

47C74

16V

10C71

10C72

10C70

TP3

0.1C3

0.1C5

0.1C2

+15V

274R26

6V-

10C25

TP2

TP1

R391500

+5V-A

475R27

1500R21

10.0KR41

1 J13

3 J4

1 J4

63GND

22GND

R232210

+3.3V

3320R15

PB2

PC6

PC5CR7

18pFC16

Y111.0592MHz

64AVCC

0.1C13

100C14

10V

17

+5V-A

27

35

36

37

3

+5V-A

11

51

20RESET

CPU

3DE

8VCC

1RO

0.1C9

3J19

1J19

8J4

7J4

3J14

1J14+5V

6J22

4J22

3J22

16J21

5J22

+5V-A

EXCITER STREAMING BUS

SERIAL IBOC DATA-

SERIAL IBOC CLK-

SERIAL IBOC FRAME-

RELAY BYPASS HEADER

+5V IN

-15V IN

+15V IN

-15V

0.01C6

8RIN4-

16EN

5RIN3-

4RIN2-

1RIN1-

L3

L2

L1

+5V-5V

-5V

15DOUT1+

10DOUT4+

11DOUT3+

DS90LV047U2

14DOUT2+

12GND

10ROUT4

R7782.5

3 57

K1:A

5C2-

4C2+

1C1+

11T1IN

15GND

+5V

-15V

+15V

+3.3V

+3.3V

3J17

12R1OUT

7T2OUT 9J3

0.1C7 6J3

10T2IN

2J3

13R1IN 5J3

5J18

21J20

12J20

7J20

6J18

SERIAL ON RJ

EXCITER +5V

EXGINE +5V

EXCITER +5V

EXCITER -15V

-5V

R2010.0K

+15V

8 J13

R131000

R1910002 J4

4 J4

GND GND

STPS140ACR14

+5VIN

R406810

53GND

3

2

1U9:A

10

9

8U9:C

R143920

R911500

+5V

10.0KR5

CR4

CR6

10.0KR16

10.0KR17

CR5

24 XTAL1

23XTAL2

0.1C12

52VCC

21VCC

0.1C18

15

16

R89332

R87332

29

28

38

39

210.0KR3

42

4DI

2RE

DS36C278TMU7

0.01C15

0.01C11

0.01C17

BAT54HT1CR1

BAT54HT1CR13

CR2BAT54HT1

15J21

221R18

2J21

6J4

5J4

R810.0

R1010.0

R1110.0

R1210.0

2J14

4J14

LCD TX

2J22

1J22

+5V-A

10.0KR86

SERIAL IBOC DATA+

SERIAL IBOC CLK+

SERIAL IBOC FRAME+

0.1C34

TP5

+3.3V

+3.3V

0.1C8

7RIN4+

13VCC

3RIN2+

2RIN1+

6RIN3+

+5VIN

10C33

TP4

16DOUT1-

13DOUT2-

12DOUT3-

9DOUT4-

R922.1

9EN

11ROUT3

R622.1

15ROUT1

14ROUT2

CR8

14 1210

K1:D

13 119

K1:C

0.1C29

3C1-

2V+

16VCC

TP12

6J17

8J18

9R2OUT

8J37J3

8R2IN

14T1OUT

7J21

4J3

1J3

3J3

6J21

7J18

2J18

9J20

24J20

20J20

47C23

16V

EXGINE +3.3V

DATA

REAR PANEL DSUB

FS

CLK

EXCITER +15V

R3710.0K

C310.11500

R38

TP6 TP11

3320R92

12

13

14U9:DR90332

0.1C22

R722.1

1

16

K1:E

4 68

K1:B

PF0/ADC0

PF1/ADC1

C320.1

PF2/ADC2

PF3/ADC3

POWER SWITCH

ATmega128-16AIU5

18pFC19

-15V

14 J21RS485(-)

7DO/RI RS485(-)

6DO/RI RS485(+)

8 J17

5 J17

REAR PANEL

2 J17

# AUDIO MISSING -

4 J23LCD RX

6 J235 J23

10.0KR88

LCD +5V

1 J23PROGRAM GND

PROGRAM MOSI

6 J13PROGRAM SCK

EXCITER INHIBIT

4 J13POWER INPUT

PROGRAM RESET

3 J13

+5V

8EN

6DIN3

1EN

2DIN1

DS90LV048U4

23J21

12J21

25J21

S2070090 SHEET 2 OF 2 V1

G

DS1

G

DS2

-15VR22

1500

PF4/ADC4

4 13

U6:D

3 14

U6:C

2 15

U6:B

1 16

U6:A

5 12

U6:E0.01C20

0.01C24

+5V-A

+5V-A

1SMB5939B39V

CR3

9COM

8GNDU6:H

MC1413BD

5GND

RS485(+)

1 J17

4 J17

7 J17

0.01C10

# HD DATA MISSING -

# AUDIO INHIBITED -

2 J23

3 J23

LCD GND

5 J13

7 J13

DAC_RESETTO SHEET 1

PROGRAM MISO

PROGRAM VCC

2 J13

5GND

3DIN2

7DIN4

4VCC

+3.3V

19J21

24J21

13J21

G

DS3

0.01C21

ADM3202ARNU1

2 IN

1SHDN

3GND

5ADJ

4OUTLT1764AEQU8

3VCC

1GND

2RESETADM803MAKS

U3

2 V_IN

1GND

3V_OUTMC7905CTU11

AM IBOC Exciter Technical Instruction Manual List of terms

Issue 0.05 2009-11-12 Page 10-1

Section 10: List of terms

This section defines some of the terms that are used in Nautel documentation.

AES-EBU. Audio Engineering Society/European Broadcasting Union (AES/EBU) is the name of a digital audio transfer standard. The AES/EBU digital interface is usually implemented using 3-pin XLR connectors (the same type of connector used in professional microphones). One cable carries both left- and right-channel audio data to the receiving device.

Cat-5. Short for Category 5. Network cabling that consists of four twisted pairs of copper wire terminated by RJ45 connectors.

EXGINE. An HD™ Radio component which resides in the exciter. The Exgine decodes the Exciter link data and produces the appropriate I/Q modulation.

GPS. The Global Positioning System is a system of satellites and receiving devices used to compute positions on the Earth.

HD™ Radio. High definition (HD) Radio is another term for In Band On Channel (IBOC) technology. HD Radio is a trademark of the Ibiquity Digital Corporation.

IBOC. Nautel In-Band-On-Channel technology provides high quality digital audio over existing AM and FM radio channels.

LAN. Local Area Network.

MPS. Main Program Service

PAD. Program-Associated Data.

SPS. Supplemental Program Service. Sometimes called SAC. In initial tests, NPR called this Tomorrow Radio.

STL. Studio-transmitter Link. A studio-transmitter link sends a radio station's audio signals from a broadcast studio to a transmitter located some distance away from the studio.

TFTP. Trivial File Transport Protocol.

TSL. Transmitter-studio Link. A transmitter-studio link returns data (e.g., monitoring information) from a transmitter site to a broadcast studio located some distance away from the transmitter.

AM IBOC Exciter Technical Instruction Manual List of terms

Page 10-2 Issue 0.05 2009-11-12

UDP. User Datagram Protocol. A core internet protocol whereby programs on networked computers can send short messages between one another.

UI. User Interface

VNC. Virtual Network Connection.

XLR. A 3-pin connector used for a balanced audio cable. Used in pro-audio equipment and AES/EBU digital audio.

AM IBOC Exciter

Technical Instruction Manual

Document: AM_IBOC-MANUAL

Issue: 0.05 2009-11-12

Nautel Limited10089 Peggy’s Cove RoadHackett’s Cove, NS Canada B3Z 3J4Phone: +1.902.823.3900 orToll 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: [email protected]: www.nautel.com© Copyright 2009 NAUTEL. All rights reserved.

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http://www.nautel.com

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