DAB+ headend aXemble manual V2 - Broadcast Partners · DAB+ chain overview with aXemble hardware...

DAB+ headend aXemble

manual V2.0

Broadcast Partners

June 2018

Broadcast Partners1 Axelsestraat 58 NL - 4537 AL Terneuzen T. +31 115 683555 www.broadcastpartners.nl

Auteurs: Davy van Delft / Rene van de Kolk

Nummer: Tnz 185070

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ners.

© 2018 Broadcast Partners

1 Broadcast Partners is de handelsnaam van Broadcast Digital Networks B.V. De onderneming is ingeschreven in het handels-

register van de Kamer van Koophandel onder nummer 54982979.

Content

Introduction

Inlog aXemble

1. Audio sources ........................................................................................... 4

2. Services ................................................................................................... 7

3. Multiplexes ............................................................................................. 13

4. Dashboard.............................................................................................. 18

5. Connecting ............................................................................................. 20

Introduction

DAB+ chain overview with aXemble hardware

The aXemble DAB+ headend is a multiplexer that gathers different DAB+ program

streams and their audio sources and produces the necessary signalling and EDI output

required for DAB+ transmission.

The aXemble headend uses a user-friendly web interface to configure audio sources,

program services and the multiplex.

Besides the headend, a standalone aXemble Audio encoder is separate available.

In this document we describe the aXemble DAB+ headend V2.0 released June 2018.

Inlog

To configure the aXemble DAB+ headend from factory preset, connect your device to

the aXemble, open an internet browser and open the following url:

http://10.0.10.15

Username : admin

Password : password

In Settings page, on top an option for future build firmware releases is available.

Backup allows you to make a local backup or restore a upload to the aXemble.

In the license code field, an overview of available services is in overview. Modifications

can be done to activate more services.

http://10.0.10.15/

http://10.0.10.15/

Timezone options can be modified as of customers wishes. An overview of live NTP set-

tings is available in the dashboard below the settings.

In the administration field you can modify inlog on aXemble with a personal password.

The control interface and datainterface can be modified manual on preffered IP ranges.

In the network configuration an overview of live network performance is available.

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Tnz 185070 DAB+manual aXemble

1. Audio Sources

Main page aXemble audio sources:

The audio sources overview can be shown by selecting audio sources from the main

menu on the left.

Press to add a new audio source or press to edit an existing audio source.

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General settings:

NAME: Provide a name for the audio

source for easy selection when adding an audio source to a service. (required) COMMENT: Provide a more detailed de-

scription of the audio source if needed. (optional)

TYPE: Select the type of audio source

used:

- Stream (Icecast of SHOUTcast

stream)

- Stream - PCM (PCM stream from de-

vice)

- AES/EBU (Digital input XLR)

- Analog (Analog input left and right

XLR) This option only in aXemble en-

coder

- Livewire host connection

- aXemble encoder connection

- SDP file configuration for Ravenna /

Dante available

GAIN: gain that can be applied by the

encoder

Audio source types:

1 – Stream

Provide a streaming url (i.e. icecast, shoutcast or other streaming servers)

2 – Stream – PCM

Provide a streaming url from an AoIP encoder which provides a PCM stream.

Select the needed fourcc codec (most common is s16l) and the PCM stream sample rate

(only 48 and 32 kHz supported)

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3 – AES/EBU

Select AES/EBU to use the digital XLR input (currently 1 input available)

4 – Analog

Select Analog to use the 2 analog XLR inputs (currently 1 input available)

5 – Livewire

Select Livewire host to use this AoIP protocol

6- aXemble encoder

Select this option to connect the aXemble separate encoder

unit

7- Ravenna / Dante protocol

Select this option to use this function and define your SDP-

file content parameters

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Note:

Currently only 1 digital or 1 analog input can be used. This option is only for aXemble

encoder.

Although both source types can be selected and used in multiple services, only the last

service and last selected source type will be active.

Save / Delete settings

Remember to save all settings by pressing Save in the right bottom corner.

Optionally you can delete an audio source by pressing Delete

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2. Services

Main page aXemble services:

The services overview can be shown by selecting Services from the main menu on the left.

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Main page edit services:

NAME: Provide a name for the service for

easy selection when adding a service to a multiplex.

(required)

COMMENT: Provide a more detailed descrip-

tion of the service if needed. (optional)

LABEL: Provide a label which describes the

service. The label will be displayed in the services selection list on the display of the DAB+ receiver. Max. 16 characters allowed (required)

SHORT LABEL: Provide a short label of max. 8

characters containing no other than the characters used in LABEL. (case sensitive)

to add a new service or press to edit an existing service. Use to duplicate.

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REGION: Select the region where the DAB

transmitters will operate.

PROGRAM TYPE: Select the desired program

type to identify the programme content for their intended audience.

COUNTRY: Select the country where the

DAB transmitters will operate.

SERVICE ID: Provide a unique ID that identi-

fies the service within a multiplex

LANGUAGE ID: Select the desired language

to identify the programme for the re-ceiver. PROTECTION: Select a desired Equal Error

Protection (*1). EEP-3A is the most com-mon used protection.

BITRATE: Select a desired bitrate. >= 96

kbps is recommended for music. aXemble sets the sample rate, audio mode and SBR to recommended settings.

SAMPLE RATE: Select a desired sample rate.

The DAB+ encoder resamples the input. When using AES input, the chosen sample rate must match the sample rate of the AES input signal.

AUDIO MODE: Select a desired audio mode.

Parametric Stereo is disabled and cannot be used in combination with bitrates above 64 kbps.

See table 1. for recommended settings.

SBR: Spectral Band Replication is an option

to enhance audio or speech codecs, es-pecially at low bit rates. SBR cannot be

used for bitrates above 128 kbps.

CAPACITY: Capacity shows the CU’s

(Capacity Units) that the service occu-

pies in the whole service. 864 CU’s

max.

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Audio Source: Select an audio source needed for the

service. (required) Backup audio source provides the possibility to add a secondary feed. In case of interruption automatisch switchover is availa-ble. Time settings for switchover adjustable from 10 till 60 seconds before watchdog activates backup source switched on air. Manual reset to main feed is the preffered way to manage. (re-ferring to latency times in STL)

PAD: Select the preferred PAD size for the associ-

ated data file

DLS: Provide a text string to run alongside the

DAB+ programme. Dynamic Label Segment is similar to RDS on FM Radio. Slideshow: Select one or more images to be dis-

played on SLS capable DAB+ receivers. Multiple

images will be displayed as a slideshow, chang-

ing at a 10 sec. interval. Images larger than

320x240px or with a file size exceeding 50kb will

be automatically resized

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Table 1: Recommended Audio mode settings

Bitrate

Sam-

ple

rate

Audio

mode

PS

recommen-

ded

PS

availa-

ble

SBR recom-

mended

SBR

availa-

ble

24 32 ste-

reo

√ √ √ √

32 32 ste-

reo

√ √ √ √

40 32 ste-

reo

√ √ √ √

48 32 ste-

reo

√ √ √ √

56 48 ste-

reo

√ √ √ √

64 48 ste-

reo

√ √ √ √

72 32 ste-

reo

√ √

80 32 ste-

reo

√ √

88 32 ste-

reo

√ √

96 48 ste-

reo

√

104 48 ste-

reo

√

112 48 ste-

reo

√

120 48 ste-

reo

√

128 48 ste-

reo

√

136 48 ste-

reo

144 48 ste-

reo

152 48 ste-

reo

160 48 ste-

reo

168 48 ste-

reo

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176 48 ste-

reo

184 48 ste-

reo

192 48 ste-

reo



Optionally you can delete a service by pressing Delete

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3. Multiplexes

Main page aXemble multiplexes:

The multiplexes overview can be shown by selecting Multiplexes from the main menu on

the left.

If a multiplex is configured, press to activate the multiplex and start the EDI

transport stream or press to stop a multiplex.

Press to add a new multiplex or press to edit an existing multiplex.

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Main page aXemble edit multiplexes:

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NAME: Provide a name for the multi-

plex.

COMMENT: Provide a more detailed

description of the multiplex if needed. (optional)

DABMODE: Currently only DAB transmis-

sion mode I is supported. Choose to operate the transmitter in MFN mode (Multi Frequency Network) or SFN mode (Single Frequency Network). MFN is chosen for a single transmitter and SFN is needed if more than 1 transmitter will operate in a network. COUNTRY: Select the country where the

DAB transmitters will operate.

ENSEMBLE ID: Provide a 4 digit ID to

identify the multiplex. For test pur-poses this ID can be anything but when used on-air this ID must be unique among other multiplexes.

LOCAL TIME OFFSET: Choose a system

time offset if needed. Auto is the pre-ferred selection. LANGUAGE ID: Choose

the language used for services in the

multiplex

LABEL: Provide a label which describes

the multiplex. The label will be dis-played in advanced information

menu’s of the DAB+ receiver. Max. 16

characters allowed (required)

SHORT LABEL: Provide a short label of

max. 8 characters containing none other than the characters used in LABEL. (case sensitive)

Services:

To add services to the multiplex, select a configured service and click

The horizontal bar will show how many capacity units are used and how many are avail-

able

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Multiplex destinations

The generated multiplex (EDI transport stream) can be sent to multiple transmitters.

Both unicast and multicast streams can be used.

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DESTINATION PORT: Provide a destination port on which the transmitter will listen. The

destination port is used for all destinations

REED SOLOMON EDI-FEC: FEC is a Forward Error Correction mechanism to detect and correct

multiple symbol errors in the transport stream. FEC 0 can be used on LAN networks,

for other networks FEC 5 is recommended.

Destinations

Select type (unicast/multicast) and add a description and a destination IP-address and

press to add the destination to the multiplex.

Press to remove a destination entry.



Optionally you can delete a multiplex by pressing Delete

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4. Dashboard

Finally at the main dashboard overview, general performance of the aXemble multiplexer

with the channels on air in the multiplex is available. At this main page also the logout

is available for the user interface. At dashboard in one overview of all services including

audio indication, live DLS and SLS monitoring. Also live refresh of all SLS pictures is

shown at this page. On the top of the dashboard live viewing of logs regarding aXemble

performance is available.

All the necessary IP network settings can be changed in the network

preferences. For security password reset can be done in the administration tool.

In the maintenance section, the availability of updating firmware is one option.

aXemble functionality will be updated and it is possible to update aXemble

remote webbased, in cooperation.

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5. Connecting

The aXemble headend is configured with the following IP-addresses:

Control interface (CTRL) : IP 192.168.12.34

Data interface (DATAT) : IP 10.0.0.10

When assigning a static IP address on the laptop or PC in the range of one of

the above IP-addresses, i.e. 10.0.0.15, the web interface can be opened

To logon, the username and password are admin and password

Then from the settings menu in the top right corner, the network settings can

be changed.

Reboot after changes to the ip-adress(es) have been made.

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The aXemble headend is configured with a Multiplex which can be found when

selecting Multiplex from the left-side menu

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Choose Edit to change the output destination of the Multiplex EDI stream

(transmitter EDI input IP and port)

Step 1 : add a unicast or multicast destination

Step 2 : add destination to the list.

Step 3 : change Port number to the listening port of the EDI device

Step 4 : Save

Step 5: In the Multiplex overview: choose Deactivate to stop the active mul-

tiplex, and after that press Activate to start the multiplex with the new set-

tings.

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DAB+ headend aXemble manual V2 - Broadcast Partners · DAB+ chain overview with aXemble hardware...

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