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Meyer Sound Documentation

User Guide — Nebra

In this section:
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Software Tools Platform

Nebra is part of the Meyer Sound Tool Box, enabling AVB Milan connection management, loudspeaker telemetry reporting, and firmware updates.

The latest version of Nebra is compatible with macOS 13 (Ventura) and Windows 11 Professional.

Included functions:

  • AVB Connection Manager: To establish Milan AVB connections, a simple drag-and-drop interface is used. Rather than presenting all of the possible connection points of all devices, Nebra only presents the available channels of the two devices. Milan-certified network switches are required for Milan connections and digital audio transport. Visit avnu.org for a listing of certified network switches.

  • Telemetry Monitoring: Nebra monitors the telemetry data from Milan-based devices over standard Ethernet, including Meyer Sound loudspeakers with equipped with Milan end-points. For Meyer Sound loudspeakers using RMS technology, Nebra functions in parallel with Compass software and the RMServer hardware. A Milan-certified network switch is not required for this function.

  • Updates: When a computer running Nebra is connected to the Internet, if new versions of Nebra or device firmware are available, they will be automatically downloaded. Notifications advise users if action is needed or recomended.

User Guide — Nebra
Software tools platform
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Nebra is part of the Meyer Sound Tool Box, enabling AVB Milan connection management, loudspeaker telemetry reporting, and firmware updates.

The latest version of Nebra is compatible with macOS 13 (Ventura) and Windows 11 Professional.

Included functions:

AVB Connection Manager: To establish Milan AVB connections, a simple drag-and-drop interface is used. Rather than presenting all of the possible connection points of all devices, Nebra only presents the available channels of the two devices. Milan-certified network switches are required for Milan connections and digital audio transport. Visit avnu.org for a listing of certified network switches.

Telemetry Monitoring: Nebra monitors the telemetry data from Milan-based devices over standard Ethernet, including Meyer Sound loudspeakers equipped with Milan end-points. For Meyer Sound loudspeakers using RMS technology, Nebra functions in parallel with Compass software and the RMServer hardware. A Milan-certified network switch is not required for this function.

Updates: When a computer running Nebra is connected to the Internet, if new versions of Nebra or device firmware are available, they will be automatically downloaded. Notifications advise users if action is needed or recommended.

Get started with Nebra
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Nebra software is free to download from software.meyersound.com. To get started using Nebra:

1. Download and install Nebra software

2. Connect to a network switch

3. Open Nebra

1. Download and install Nebra software
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Open https://software.meyersound.com/nebra, then click Download.

macOS_Icon.png macOS

  1. Locate the downloaded .zip file in Finder (usually in Downloads), then select it to expand the .zip file.

  2. Select the Nebra-2.x.x.pkg installer file to open the installer.

  3. Select Agree to the terms of the software license.

  4. Select Install to use the default file path, or select another location.

  5. When the installation completes, and you've selected Close, open Nebra from Applications.

windows-icon.png Windows

  1. Locate the downloaded .msi file in Explorer (usually in Downloads, then select it to show the contents.

  2. Select the Nebra-2.x.x.msi installer file to launch the installer.

  3. Progress through the Nebra Setup Wizard and accept the End-User License Agreement (EULA).

  4. Click Next to install the software in the default file path or select another location.

  5. Select Yes to allow the app to make changes.

    A pop-up may appear if Nebra does not find the AVDECC driver. Select OK to install the driver.

    A notification may open asking for permission to make changes to osascript. Allow the change, then select OK.

2. Connect to a network switch
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You'll need a standard 100bT, IPv6-enabled Ethernet switch to transport device telemetry data. An Avnu-certified AVB network switch is not required.

For Milan digital audio transport, an Avnu-certified AVB network switch is required. These switches support Milan functions. A list of Avnu-certified hardware, including network switches, is available on the Avnu Alliance website.

For more information about network switches, see Recommended Network Switches for Milan AVB Systems

3. Open Nebra
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  • Ensure your computer is connected to the Internet and to the same network as the Milan AVB devices.

  • Launch the Nebra application and enter your meyersound.com login credentials.

  • Nebra will automatically discover the devices connected to the network, including:

    • Avnu-certified network switches

    • Galileo GALAXY processors

    • Milan endpoint loudspeakers

    For more information about Meyer Sound Milan AVB-enabled devices, see User Guide — Managing AVB Networks.

Workflow
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User Interface Overview
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  1. Hamburger Menu: Sign Out, links to Help, Support, and View Logs

  2. Device Manager

  3. Connection Manager

  4. Snapshots

  5. Settings: Network display, Media Clock Master selection, Notifications preferences, and Display Settings options

  6. System Health Indicator and Event Log

  7. Workspace Focus indicator

  8. Application Search

  9. Hide/Show Properties Sidebar

Getting Started
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Modify the default Device Names

Select DEVICES (1.svg below). Click on a device type header (Processor, Milan Loudspeakers, etc.) to expand/collapse the list of devices by type. For each listed device, double-click the name and modify the text (2.svg below). These names are stored in the devices and are used to correlate devices listed in software to the physical devices.

Tip

For arrays, a good strategy is to start each name with a number to indicate position in the array followed by a letter or combination of letters to denote the array. This aids when searching for devices and sorting columns. The number at the end of the default name is the serial number of the loudspeaker. For example:

01 Left Main Panther

02 Left Main Panther

Note

  • For network switches, the last three octets of the Milan identity name match those of the device's MAC address. If renaming, including the last three octets may be helpful. For example:

    FE-A0-6B-64, renamed: FOH Primary A0-6B-64

  • Duplicate device names within the same group name are not allowed.

To match devices listed in Nebra to physical devices, use the Wink function. Click once on a device in Devices (1.svg below) or a device in the Connections Workspace to open the Sidebar panel. Click the Wink icon (2.svg below) to turn on the device’s Wink LED(s). Conversely, press the Wink button on the device, which will be indicated in Nebra.

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Nebra, Devices – Click Wink Icon to Turn on Device’s Wink LED

Note

  • The Wink function of PANTHER and 2100-LFC loudspeakers automatically times out after several seconds. The Wink function of other loudspeakers and devices is active until the Wink icon in Nebra is clicked or the Wink button on the device is pushed.

  • To change the device name, double-click the device name at the top of the Sidebar panel.

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Nebra, Devices – Double-Click Default Group Name, Type to Modify

Designate a device as the Master Media Clock

Click Settings (1.svg below), click Media Clock (2.svg below), click Set Media Clock ( 3.svg below), and then select a device as the system Media Clock (4.svg below). Click Apply in the dialog to make the designation.

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Nebra, Settings – Set Media Clock – Settings, Media Clock, Set Media Clock, Select Device

Establish Milan connections

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Nebra, Connections – Make Milan Connection Between Talker and Listener

Steps illustrated above:

  • Select CONNECTIONS

  • Click to expand Available Devices

  • Click-drag a Talker (Galileo GALAXY processor) to Workspace

  • Click-drag Lister (loudspeaker), drop on a Talker, Connection Matrix opens (method 1)

  • Select which Talker Output to connect to the Lister

  • Click BACK

  • Select another Listener and drag into the Workspace

  • Select Connect

  • Drag from the Talker to the Listener (method 2)

  • Select which Talker Output to connect to the Lister

  • Click Back

  • Select Delete

  • Click on a connection line to un-make the connection

  • Click on a device to remove the device from the Workspace

    Note

    While making connections, it is normal for the Health Status indicator to indicate device thresholds have been met while the devices are negotiating the network connection. Click the System Health icon to acknowledge. If there are no errors or faults, the indicator will indicate the status is OK.

Once a connection is made, click the connection line between devices to open the Connection Matrix and modify or de-select the routing.

Save a Snapshot

Select Snapshots (4), click + Create new in upper-right of application window. Name the Snapshot, click OK. Saves the devices and Milan connections in the Workspace for later recall.

View Device Telemetry

To view a device’s real-time telemetry data, click the device name in Devices or the device icon in the Workspace to open the Sidebar. Click the Telemetry tab to display the available details.

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Nebra, Sidebar, Telemetry Tab – ULTRA-X20 Telemetry

Note

Hover the pointer on the temperature or voltage gauge to display numeric values.

Click the pop-out icon in the upper-right (highlighted above) to pop out the Sidebar in a separate window from the Nebra application.

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Nebra – Popped Out Standalone Sidebar Window

Download loudspeaker usage data

Loudspeakers equipped with Milan Endpoints store usage data. To download a loudspeaker log to the Nebra computer, right-click the loudspeaker name listed in Devices or right-click the loudspeaker icon in the Workspace to open the pop-up menu and select DOWNLOAD LOG FILES (left, below). The three-dot menu in the Sidebar (if open) includes this option as well (right, below).

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Nebra – Download Loudspeaker Log File

The .log file is listed in a Finder window that opens.

The macOS file location is:

/Users/meyersound/Library/Logs/Nebra/Downloaded_Logs

The Windows file location is: 

C:\Users\Nebra\AppData\Roaming\Nebra\Logs

System monitoring

The System Health indicator will turn from green to yellow (caution) or red (warning) when a device status threshold is met:

StatusIndicators1.png

Click the Health Status icon to acknowledge a caution or warning.

Note

During the connection steps above, it is normal for the System Health indicator to indicate cautions and/or warnings. These are related to the momentary disconnected condition while the connection is established.

When a device status threshold is met, banners that include summary text appear at the bottom of the Workspace to alert users.

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Nebra – Warning and Caution Banner Examples

Both the System Health indicator and the pop-up banners notify users that new Events have been added to the System Status Log.

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Nebra – Events Tab

The macOS file location is:

/Users/meyersound/Library/Logs/Nebra/SystemReportsC:\Users\Nebra\AppData\Roaming\Nebra\Logs\SystemReports

Update firmware
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Nebra can update the firmware of Meyer Sound Galileo GALAXY processors and Milan endpoint loudspeakers.

There are two ways to update the firmware of connected Meyer Sound Milan AVB devices using Nebra:

  • Automatic download

  • Manual install

Automatic download

When you open Nebra, it automatically downloads the latest firmware versions.

If a newer firmware version is available for a device that needs updating, a notification banner displays at the top of the application window.

Procedure. To update connected devices with automatically downloaded firmware:

  1. Select View Details.

  2. Select Install for each device, or Install All to install the current version of device firmware.

Manual install

If you have a firmware file, use the following procedure to individually update devices manually.

Procedure. To update connected device firmware manually:

  1. Copy the firmware file to the computer running Nebra.

  2. In Devices, select a device to open its Details.

  3. Select the three-dots, then select Manual firmware install.

  4. Choose the firmware file, then select Open.