Axel Macrotel D1 User manual

User Manual
(Rel. 1.3)
Via Caduti Di Sabbiuno 6/F - 40011 Anzola Emilia - Bologna - Italy
Tel. [phone] - Fax. [phone]
e-mail: [e-mail] - web site: www.axeltechnology.com
MACROTEL
D1 - D2
DIGITAL TELEPHONE HYBRIDS

Pag. 2
This manual is for use with the following products :
Macrotel D1
Macrotel D2
Axel Technology SRL
All Rights Reserved
Revision 1.3, October 2005
Via Caduti Di Sabbiuno 6/F - 40011 Anzola Emilia - Bologna - Italy
Tel. [phone] – + 39 051 736154
Fax. [phone]
e-mail: [e-mail] - web site: www.axeltechnology.com
Information in this document is subject to change without notice and does not represent a commitment on the part of the
vendor. This manual images could differ a bit from the equipment actual design. Axel Technology SRL shall not be liable for
any loss or damage whatsoever arising from the use of information or any error contained in this manual.
No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including
photocopying, recording, information storage and retrieval systems, for any purpose other than the purchaser’s personal use,
without the express written permission of Axel Technology SRL.

TABLE OF CONTENTS ENG
Pag. 3
1 TABLE OF CONTENTS
1TABLE OF CONTENTS........................................................................................................................3
2INTRODUCTION...................................................................................................................................4
2.1 WHATIS ATELEPHONE HYBRID .................................................................................................4
2.2 THEMACROTEL D1 &D2..............................................................................................................4
2.3 MAIN FEATURES ..........................................................................................................................5
2.4 AVAILABLEOPTIONS(MACROTELD1 AND MACROTEL D2)........................................................5
3SAFETY WARNINGS / ISTRUZIONI PER LA SICUREZZA ..................................................................6
3.1 FOREWORD..................................................................................................................................6
4SAFETY WARNINGS............................................................................................................................7
5CONSIGNES DE SÉCURITÉ IMPORTANTES......................................................................................8
6ISTRUZIONI IMPORTANTI PER LA SICUREZZA.................................................................................9
7WICHTIGE SICHERHEITSHINWEISE.................................................................................................10
8INSTRUCCIONES IMPORTANTES DE SEGURIDAD.........................................................................11
9FIRST INSTALLATION RECOMMENDATIONS..................................................................................12
9.1 POWER SUPPLY CABLE.............................................................................................................12
9.2 AC MAINS VOLTAGE SETTING (230 V/115 V)............................................................................12
9.3 FUSEREPLACEMENT ................................................................................................................13
9.4 PROTECTIONAGAINST LIGHTNING..........................................................................................13
9.5 VENTILATION..............................................................................................................................13
10 EQUIPMENT DESCRIPTION...........................................................................................................14
10.1 FRONT PANEL.........................................................................................................................14
10.2 REAR PANEL...........................................................................................................................16
11 BLOCK DIAGRAM – MACROTEL D1.............................................................................................17
12 BLOCK DIAGRAM – MACROTEL D2.............................................................................................18
13 SETTINGS & CONFIGURATION.....................................................................................................19
13.1 DIP SWITCHES SETTING ........................................................................................................19
13.2 FRONT PANEL POTENTIOMETERS........................................................................................21
13.3 TRAINING THEECHO CANCELLER........................................................................................22
13.4 TRAINING THEMIX-MINUS .....................................................................................................22
14 OPERATION...................................................................................................................................23
14.1 HOOKINGTHE LINE ................................................................................................................23
14.2 USING THEEXTERNALTELEPHONE SET..............................................................................23
14.3 ADJUSTING THEMONITOROUTPUT LEVEL..........................................................................23
14.4 MIX-MINUS &AUTO MIX-MINUS..............................................................................................24
14.5 USING THEMIC PREAMPLIFIER.............................................................................................24
14.6 CONFERENCING BETWEENTHECALLERS...........................................................................24
15 AUDIO CONNECTIONS..................................................................................................................25
15.1 SOME PRELIMINARY NOTES…..............................................................................................25
15.2 MONITOR HEADPHONES JACK..............................................................................................25
16 THE REMOTE INTERFACE ............................................................................................................26
16.1 INTERFACEPIN-OUT..............................................................................................................26
16.2 ‘LATCHED’ OR‘MOMENTARY’ HOOK MODE..........................................................................27
16.3 INTERFACECABLE BETWEENMACROTEL D1AND OXYGEN5CONSOLE............................27
16.4 INTERFACECABLE BETWEENMACROTEL D2AND OXYGEN5CONSOLE............................28
17 TELEPHONE LINE CONNECTION..................................................................................................29
18 TECHNICAL SPECIFICATIONS......................................................................................................30
19 WARRANTY....................................................................................................................................30

INTRODUCTION ENG
Pag. 4
2 INTRODUCTION
2.1 WHAT IS A TELEPHONE HYBRID
Telephone hybrids are required to interface an analog telephone line with a mixer. Audio from the phone
interlocutor can then go on-air together with the speaker voice, who goes also to the phone interlocutor.
It seems counter-intuitive, but the main goal of a studio hybrid is to make the people in the studio sound
better. If the hybrid isn’t working well, people speaking from the studio will sound ‘hollow’ or like they are
‘talking into a barrel’. This is due to the strange effect of mixing microphone audio with telephone ‘bleed-
through’. Of course, Macrotel D1 & D2 hybrids also improve the audio of callers, filtering out hum and noise
as well as adjusting levels between loud and soft speakers.
2.2 THE MACROTEL D1 & D2
Macrotel D1 and Macrotel D2 are digital telephone hybrid, especially designed to fit all TV and radio station
requirements.
With the variety of telephone systems in the world today, from cellular mobile phones to analog and to digital,
it’s increasingly difficult to have all callers sound the same on-air in a broadcast environment.
The Macrotel D1 and Macrotel D2 use digital signal processing (DSP) technology to continually adapt to
telephone-line conditions and to deliver the maximum isolation between the send and receive audio (> 55
dB).
With no echo and no "bottom of the barrel" sound, the Macrotel D1 and Macrotel D2 are thus ideal when the
very best audio quality and uniformity is required for talk shows, news feeds, production, recording studios,
and even internet applications.
Several functions (selectable from front panel DIP switches) greatly expand their operation. Automatic gain
control (AGC) allows each call to be delivered at the same level. Built-in caller Ducking stage reduces the
caller's audio level when the announcer speaks. Auto mix-minus feature allows easy installation to consoles
with no mix-minus capability.
Additionally, the hybrid can automatically answer the telephone line after the first ring and automatically
disconnect it after the caller hangs up. The REC Output can be configured to contain a mix of send and caller
audio or caller audio only.
It has been also added a headphone amplifier so you can connect hedphones directly to the unit and monitor
callers. The Send input can accept either Line or Micro levels, so that creating a ‘Telco’ place fitted with – for
example – an headphone and a micro can be achieved with no need for external mixers or mic preamplifiers.
The Macrotel D2 performs the functions of two digital hybrids in a single rack mount unit. The two internal
hybrids contain a common send audio input and the two telephone lines are internally conferenced.
Both callers audio can be combined as a single input on your console or as two separate outputs to two
console inputs.
In accordance to mainland Europe, USA, Canada, and UK compliance standards, the Macrotel D1 & D2 are
perfect for your telephone application wherever You are.

INTRODUCTION ENG
Pag. 5
2.3 MAIN FEATURES
-
Easy to install, simple to operate
-
The very best audio quality and the deepest, most reliable send/receive separation
-
Continual adaptation to telephone line conditions
-
On/Off control via front panel and rear panel remote connection
-
Variety of selectable functions from the front panel Dip Switches
-
Analog receive filter for telephone line noise reduction
-
Selectable auto-answer / auto-disconnect
-
Selectable AGC to ensure every caller is at the same audio level
-
Cross conferencing between callers on the Macrotel D2 lines
-
Auxiliary output for recording
-
Selectable automatic mix-minus
-
Selectable caller control (ducking)
-
Headphone socket for easy monitoring of Receive audios
-
Selectable Mic or line Send input
-
Worldwide compliant
2.4 AVAILABLE OPTIONS (MACROTEL D1 AND MACROTEL D2)
The Macrotel D1 and Macrotel D2 are available in different versions, depending on the Country they will be
used.
In particular, three main versions are available: Europe, Australia and America.
In the event of orded, please inform Axel Technology representative about the destination Country.
This appliance is connected to telephone networks indirectly through interface (in-house
telephone exchange). Direct connection to the public telephone net is under sole
responsibility of the user.

SAFETY WARNINGS / ISTRUZIONI PER LA SICUREZZA
Pag. 6
3 SAFETY WARNINGS / ISTRUZIONI PER LA SICUREZZA
SAFETY WARNINGS
CONSIGNES DE SÉCURITÉ IMPORTANTES
ISTRUZIONI IMPORTANTI PER LA SICUREZZA
WICHTIGE SICHERHEITSHINWEISE
INSTRUCCIONES IMPORTANTES DE SEGURIDAD
(Rel. 1.1)
3.1 FOREWORD
For your own safety and to avoid invalidation of the warranty all text marked with these Warning
Symbols should be read carefully.
Information in this manual is subject to change without notice and does not represent a commitment on the
part of the vendor.
The manufacturer shall not be liable for any loss or damage whatsoever arising from the use of information
or any error contained in this manual, or through any mis-operation or fault in hardware contained in the
product.
It is recommended that all maintenance and service on the product should be carried out by the
manufacturer or its authorised agents. The manufacturer cannot accept any liability whatsoever for any loss
or damage caused by service, maintenance or repair by unauthorised personnel.

SAFETY WARNINGS
Pag. 7
4 SAFETY WARNINGS
The installation and servicing instructions in this manual are for use by qualified personnel only.
- Read All Instructions. All safety and operating instructions must be read before operating the product. They also
must be retained for future reference, as it contains a number of useful hints for determining the best combination of
equipment settings for Yr particular application.
- Heed All Warnings. All warnings on the product and those listed in the operating instructions must be adhered to.
- Heat. This product must be situated away from any heat sources such as radiators or other products (including
power amplifiers or transmitters) that produce heat.
- Power Sources. This product must be operated from the type of power source indicated on the marking label and in
the installation instructions. If you are not sure of the type of power supplied to your facility, consult your local power
company. Make sure the AC main voltage corresponds to that indicated in the technical specifications. If a different
voltage (ex. 110/115 VAC) is available, open the equipment closure and set the voltage switch on the main supply
circuit, located behind the AC socket
- Power Cord Protection. Power supply cords must be routed so that they are not likely to be walked on nor pinched
by items placed upon or against them. Pay particular attention to the cords at AC wall plugs and convenience
receptacles, and at the point where the cord plugs into the product
- Use only with a cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When
a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
- Lightning. For added protection for this product during a lightning storm, or when it is left unattended and unused for
long periods of time, unplug it from the AC wall outlet and the audio connections. This will prevent damage to the
product due to lightning and power line surges
- Installation. Configuration and installation should only be carried out by a competent installation engineer
- Cabling. Using high quality wires, well protected. Make sure the cable integrity.
This symbol alerts you to the presence of dangerous voltage inside the closure – voltage which
may be sufficient to constitute a risk of shock. Do not perform any servicing other than that
contained in the operating instructions. Refer all servicing to qualified personnel
The exclamation point within an equilateral triangle is intended to alert the user to the presence of
important operating and maintenance (servicing) instructions in the literature accompanying the
appliance.
Do not change the voltage setting or replace the mains fuse without first turning the unit off and
unplugging the mains cord.
Make sure the AC main voltage corresponds to that indicated in the technical specifications.
THIS APPARATUS MUST BE EARTHED !
To avoid risk of fire use the correct value fuse, as indicated on the label stuck on the right side of
the unit.
This apparatus uses a single pole mains switch and does therefore not separate the unit completely
from the mains power. To completely separate from mains power (f.i. in the event of danger) unplug
mains power cord. As the MAINS plug is the disconnect device, the disconnect device shall remain
readily operable.

CONSIGNES DE SÉCURITÉ IMPORTANTES
Pag. 8
5 CONSIGNES DE SÉCURITÉ IMPORTANTES
- Lire ces consignes
- Conserver ces consignes
- Observer tous les avertissements
- Suivre toutes les consignes
- Ne pas utiliser cet appareil à proximité de l’eau
- Ne pas obstruer les ouvertures de ventilation. Installer en respectant les consignes du fabricant
- Ne pas installer à proximité d'une source de chaleur telle qu'un radiateur, une bouche de chaleur, un poêle ou
d'autres appareils (dont les amplificateurs) produisant de la chaleur.
- Ne pas annuler la sécurité de la fiche de terre, la troisième branche est destinée à la sécurité. Si la fiche fournie
ne s'adapte pas à la prise électrique, demander à un électricien de remplacer la prise hors normes.
- Protéger le cordon d'alimentation afin que personne ne marche dessus et que rien ne le pince, en particulier aux
fiches, aux prises de courant et au point de sortie de l’appareil
- Utiliser uniquement les accessoires spécifiés par le fabricant
- Utiliser uniquement avec un chariot, un support ou une table spécifié par le fabricant ou vendu avec l’appareil. Si
un chariot est utilisé, déplacer l’ensemble chariot–appareil avec précaution afin de ne pas le renverser, ce qui
pourrait entraîner des blessures
- Débrancher l’appareil pendant les orages ou quand il ne sera pas utilisé pendant longtemps.
- Confier toute réparation à du personnel qualifié. Des réparations sont nécessaires si l’appareil est endommagé
d’une façon quelconque, par exemple: cordon ou prise d’alimentation endommagé, liquide renversé ou objet tombé à
l’intérieur de l’appareil, exposition de l’appareil à la pluie ou à l’humidité, appareil qui ne marche pas normalement ou
que l’on a fait tomber.
- NE PAS exposer cet appareil aux égouttures et aux éclaboussements. Ne pas poser des objets contenant de
l'eau, comme des vases, sur l'appareil
Ce symbole indique la présence d'une tension dangereuse dans l'appareil constituant un risque de
choc électrique.
Ce symbole indique que la documentation fournie avec l'appareil contient des instructions
d'utilisation et d'entretien importantes.
Avant de modifier le commutateur de changement de tension ou replacer le fusible il faut débrancher
l’appareil de la prise électrique. Pendant son usage, l’appareil doit etre branchee à la prise de terre
Utiliser le fusible principal AC avec le valeur qui est indiquée sur l'étiquette collée sur le coffret.
Assurez-vous que la tension principale AC correspond à celle indiquée dans les spécifications
techniques.
L’interrupteur d’alimentation interrompt un pôle du réseau d’alimentation excepté le conducteur de
terre de protection. En cas de danger, debrancher le cordon d'alimentation. Parce que la prise du
réseau de alimentation est utilisée comme dispositif de déconnexion, ce dispositif doit demeuré
aisément accessible.

ISTRUZIONI IMPORTANTI PER LA SICUREZZA
Pag. 9
6 ISTRUZIONI IMPORTANTI PER LA SICUREZZA
- Leggere le presenti istruzioni
- Conservare queste istruzioni
- Osservare tutte le avvertenze
- Seguire scrupolosamente tutte le istruzioni
- Non usare questo apparecchio in prossimità di acqua
- Non ostruire alcuna apertura per il raffreddamento. Installare l’apparecchio seguendo le istruzioni
- Non installare l'apparecchio accanto a fonti di calore quali radiatori, aperture per l'afflusso di aria calda, forni o
altri apparecchi (amplificatori inclusi) che generino calore
- Non rimuovere il terminale di connessione a terra sul cordone di alimentazione: esso ha lo scopo di tutelare
l’incolumità dell’utilizzatore. Se la spina in dotazione non si adatta alla presa di corrente, rivolgersi ad un elettricista
per far eseguire le modifiche necessarie.
- Evitare di calpestare il cavo di alimentazione o di comprimerlo, specialmente in corrispondenza della spina e del
punto di inserzione sull’apparato.
- Utilizzare solo dispositivi di collegamento e gli accessori specificati dal produttore.
- Utilizzare l’apparecchio solo con un carrello, un sostegno, una staffa o un tavolo di tipo specificato dal produttore o
venduto insieme all’apparecchio. Se si utilizza un carrello, fare attenzione negli spostamenti per evitare infortuni
causati da ribaltamenti del carrello stesso.
- Scollegare l’apparecchio dalla presa di corrente durante i temporali o quando inutilizzato a lungo
- Per qualsiasi intervento, rivolgersi a personale di assistenza qualificato. È’ necessario intervenire sull’apparecchio
ogniqualvolta si verificano danneggiamenti di qualsiasi natura. Ad esempio, la spina o il cavo di alimentazione sono
danneggiati, è entrato liquido nell’apparecchio o sono caduti oggetti su di esso, l’apparecchio è stato esposto alla
pioggia o all’umidità, non funziona normalmente o è caduto.
- Non esporre a sgocciolamenti o spruzzi. Non appoggiare sull'apparecchio oggetti pieni di liquidi, ad esempio vasi
da fiori.
Questo simbolo indica la presenza di alta tensione all'interno dell'apparecchio, che comporta rischi di
scossa elettrica.
Questo simbolo indica la presenza di istruzioni importanti per l'uso e la manutenzione nella
documentazione in dotazione all'apparecchio.
Non sostituire il fusibile o cambiare la tensione di alimentazione senza aver prima scollegato il
cordone di alimentazione. L’APPARATO DEVE ESSERE CONNESSO A TERRA.
Sostituire il fusibile generale con uno di identico valore, come indicato sulla etichetta applicata sul
mobile dell’apparato.
Assicurarsi che la tensione di rete corrisponda a quella per la quale è configurato l’apparecchio.
Questo apparato utilizza un interruttore di alimentazione di tipo unipolare e l’isolamento dalla rete
elettrica non è pertanto completo. Per ottenere un isolamento totale (ad esempio in caso di pericolo),
scollegare il cordone di alimentazione. Inoltre, poichè la spina di alimentazione è utilizzata come
dispositivo di sezionamento, essa deve restare facilmente raggiungibile.

WICHTIGE SICHERHEITSHINWEISE
Pag. 10
7 WICHTIGE SICHERHEITSHINWEISE
- Diese Hinweise LESEN
- Diese Hinweise AUFHEBEN
- Alle Warnhinweise BEACHTEN
- Alle Anweisungen BEFOLGEN
- Dieses Gerät NICHT in der Nähe von Wasser verwenden
- KEINE Lüftungsöffnungen verdecken. Gemäß den Anweisungen des Herstellers einbauen
- Nicht in der Nähe von Wärmequellen, wie Heizkörpern, Raumheizungen, Herden oder anderen Geräten
(einschließlich Verstärkern) installieren, die Wärme erzeugen
- Die Schutzfunktion des Schukosteckers NICHT umgehen. Bei Steckern für die USA gibt es polarisierte Stecker,
bei denen ein Leiter breiter als der andere ist; US-Stecker mit Erdung verfügen über einen dritten Schutzleiter. Bei
diesen Steckerausführungen dient der breitere Leiter bzw. der Schutzleiter Ihrer Sicherheit. Wenn der mitgelieferte
Stecker nicht in die Steckdose passt, einen Elektriker mit dem Austauschen der veralteten Steckdose beauftragen
- VERHINDERN, dass das Netzkabel gequetscht oder darauf getreten wird, insbesondere im Bereich der Stecker,
Netzsteckdosen und an der Austrittsstelle vom Gerät
- NUR das vom Hersteller angegebene Zubehör und entsprechende Zusatzgeräte verwenden.
- NUR in Verbindung mit einem vom Hersteller angegebenen oder mit dem Gerät verkauften Transportwagen, Stand,
Stativ, Träger oder Tisch verwenden. Wenn ein Transportwagen verwendet wird, beim Verschieben der
Transportwagen-Geräte- Einheit vorsichtig vorgehen, um Verletzungen durch Umkippen
- Das Netzkabel dieses Geräts während Gewittern oder bei längeren Stillstandszeiten aus der Steckdose
ABZIEHEN.
- Alle Reparatur- und Wartungsarbeiten von qualifiziertem Kundendienstpersonal DURCHFÜHREN LASSEN.
Kundendienst ist erforderlich, wenn das Gerät auf irgendwelche Weise beschädigt wurde, z.B. wenn das Netzkabel
oder der Netzstecker beschädigt wurden, wenn Flüssigkeiten in das Gerät verschüttet wurden oder Fremdkörper
hineinfielen, wenn das Gerät Regen oder Feuchtigkeit ausgesetzt war, nicht normal funktioniert oder fallen gelassen
wurde.
- Dieses Gerät vor Tropf- und Spritzwasser SCHÜTZEN. KEINE mit Wasser gefüllten Gegenstände wie zum
Beispiel Vasen auf das Gerät STELLEN.
Dieses Symbol zeigt an, dass gefährliche Spannungswerte, die ein Stromschlagrisiko darstellen,
innerhalb dieses Geräts auftreten.
Dieses Symbol zeigt an, dass das diesem Gerät beiliegende Handbuch wichtige Betriebs- und
Wartungsanweisungen enthält.
Vor Änderung der Netzspannung oder Sicherungswechsel Netzkabel trennen.
Das Gerät muss für den Betrieb geerdet werden.
Hauptsicherung nur mit einer gleichwertigen austauschen
(s. entsprechende Etikette).
Vor Einschalten Netzspannungseinstellung am Gerät überprüfen bzw. anpassen.
Inpoliger Netzschalter. In Notfälle oder für Wartungsarbeiten Netzkabel trennen. Der Netzstecker
fungiert auch als Trennelement muss deshalb zugänglich bleiben