Sonifex AVN-TB6D User manual

Manufacturers of Audio Products for AV,
Installed Sound, Broadcast Radio & Broadcast TV
AVN-TB6
6 Button Talkback Intercom (Freestanding)
HANDBOOK
AVN-TB6D
6 Button Talkback Intercom (Desktop)

AVN-TB6 & AVN-TB6 Handbook
This handbook is for use with the following product:
AVN-TB6 & AVN-TB6D 6 Button Talkback Intercom
AW10890A,
Stock Code: 30-371
Revision 1.01, July 2018
©Sonifex Ltd, 2018
All Rights Reserved
Sonifex Ltd, 61, Station Road, Irthlingborough,
Northants, NN9 5QE, England.
Tel: +44 (0)1933 650 700
Fax: +44 (0)1933 650 726
Website: http://www.sonifex.co.uk
Information in this document is subject to change without notice and does not represent a
commitment on the part of the vendor. Sonifex Ltd 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 Sonifex
Ltd. Unless otherwise noted, all names of companies, products and persons contained herein are
part of a completely fictitious adaptation and are designed solely to document the use of Sonifex
product.
Made in the UK by
For the latest Sonifex handbook information please visit the
Sonifex website at www.sonifex.co.uk

Contents & Figures
Contents
Product Warranty - 2 Year Extended i
Sonifex Warranty & Liability Terms & Conditions i
1. Definitions i
2. Warranty i
Unpacking Your Product ii
Repairs & Returns iii
Conformity iii
Safety & Installation of Mains Operated Equipment iii
Voltage Setting Checks iii
Fuse Rating iii
Power Cable & Connection iii
WEEE Directive iv
Atmosphere/Environment iv
1. AVN-TB6 & AVN-TB6D 6 Button Talkback Intercom 1
Introduction 1
2. Installation 3
Network Connection 3
Microphone 4
GPIO 4
Power Supply 4
3. Front Panel Controls, Connections & Indicators 5
Status Indicators 6
AoIP 6
Ethernet 6
Talk 6
AGC 6
Clock 6
AC PSU 6
DC PSU 6
Channel 1 to 6 Intercom Call Buttons 7
Listen Button 7
Page Button 7
Rotary Encoder Control 7
Reset Switch 7
Mon Button 7
User Button 7
LS Mute Button 7
Mic Mute Button 7
Microphone Input Connector 7
+48V Phantom Power Indicator 8
Headset Connector (AVN-TB6D only) 8
Headphone Output Connector 8
Power Switch 8
4. Rear Panel Connections 9
Headset Connector (AVN-TB6 only) 10
GPI/O 10
Ethernet 1GB & AoIP 1GB Network Interfaces 10
AoIP SFP Interface 10
12V DC Input 10
Mains Fuse 11
Mains AC Input 11
5. Quick Start Guide 12
6. Intercom Calls 13
Making a Call 13
Receiving a Call 13
During a Call 13
Ending a Call 13
Group Calls 13
Call Signal 13
Auto Answer 14
Listen Button 14
Call Functions 14
7. Intercom Calls with IFB 15
8. Non-Intercom Calls 16
9. Page 17
Making a Page 17
Receiving a Page 17
During a Page 17
Ending a Page 17
10. Volume Control 18
Speaker & Headphone Volume 18
Call Channel Volume 18
Monitor Volume 18
Call Signal Volume 18
11. Network Address Announcement 19
12. Embedded Web Server 20
Information Tab 20
Device Information Web Page 20
Audio Assignments Web Page 22

Contents & Figures
GPIO Assignments Web Page 23
Configuration Tab 24
Network Web Page 25
AoIP Stream Settings Web Page 26
PTP Profiles Web Page 27
Channels - Basic Settings Web Page 29
Channels - Advanced Settings Web Page 30
Group Talk Web Page 31
Front Panel - Display Settings Web Page 32
Front Panel - Colour Settings Web Page 32
Front Panel - User Button Settings Web Page 33
Audio - Microphone Settings Web Page 34
Audio - Monitor & Speaker Settings Web Page 35
Page Settings Web Page 36
GPIO Settings Web Page 37
Virtual GPIO Settings Web Page 38
Miscellaneous Settings Web Page 39
System Tab 39
13. Ember+ Interface 42
Connecting to the Ember+ Interface 42
GPIO 42
Type Parameter 43
Input Function Parameter 43
Input Action Parameter 43
Output Trigger Parameter 43
Status Parameter 43
Set Output Function 43
Relay 43
Trigger Parameter 43
Status Parameter 43
Active Function 43
Virtual GPIO Control 44
Type Parameter 44
Input Function Parameter 44
Input Driver Name Parameter 44
Output Trigger Parameter 44
Status Parameter 44
Set Output Function 44
Parameter Value Specification 45
Identity 45
Network 45
AoIP 45
PTP 45
Display 46
Mic 46
Channels 46
Group Talk 47
Page 47
GPIO 47
Relay 48
User 49
Monitors 49
Speaker 49
Power Button 49
AC PSU Status 49
DC PSU Status 49
14. Technical Specifications 50
15. Additional Information 52

Contents & Figures
Figures
Fig 1-1: The AVN-TB6 Front Panel 1
Fig 1-2: The AVN-TB6D Front Panel 1
Fig 2-1: Preferred Network Topology 3
Fig 3-1: AVN-TB6 and AVN-TB6D Front Panels 5
Fig 4-1: AVN-TB6 and AVN-TB6D Rear Panels 9
Table 6-1: Call Functions 14
Fig 12-1: Upper Section of Device Information Web Page 20
Fig 12-2: Lower Section of Device Information Web Page 21
Fig 12-3: Audio Assignments Web Page 22
Fig 12-4: Upper Section of GPIO Assignments Web Page 23
Fig 12-5: Lower Section of GPIO Assignments Web Page 24
Fig 12-6: Network Web Page 25
Fig 12-7: AoIP Stream Settings Web Page 26
Fig 12-8: Upper Section of PTP Profiles Web Page 27
Fig 12-9: Lower Section of PTP Profiles Web Page 27
Fig 12-10: Channels - Basic Settings Web Page 29
Fig 12-11: Channels - Advanced Settings Web Page 30
Fig 12-12: Group Talk Web Page 31
Fig 12-13: Front Panel - Display Settings Web Page 32
Fig 12-14: Front Panel - Colour Settings Web Page 32
Fig 12-15: Front Panel - User Button Settings Web Page 33
Fig 12-16: Audio - Microphone Settings Web Page 34
Fig 12-17: Audio - Monitor & Speaker Settings Web Page 35
Fig 12-18: Page Settings Web Page 36
Fig 12-19: GPIO Settings Web Page 37
Fig 12-20: Virtual GPIO Settings Web Page 38
Fig 12-21: Miscellaneous Settings Web Page 39
Fig 12-22: Update Firmware Section of System Web Page 39
Fig 12-23: Save Configuration Section of System Web Page 40
Fig 12-24: Load Configuration Section of System Web Page 40
Fig 12-25: Save System Log Section of System Web Page 41
Fig 13-1: Ember+ Root Structure 42
Fig 13-2: Ember+ GPIO Branch Structure 42
Fig 13-3: Ember+ Relay Node Structure 43
Fig 13-4: Ember+ Virtual GPIO Branch Structure 44
Table 15-1: DSCP Names & Their Corresponding IP Precedence 52

Warranty Registration
Sonifex Limited 61 Station Road Irthlingborough Northamptonshire NN9 5QE United Kingdom
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: technical.support@sonifex.co.uk Internet: www.sonifex.co.uk
Register Online for an
Extended 2 Year Warranty
As standard, Sonifex products are
supplied with a 1 year back to base
warranty.
If you register the product online, you
can increase your product warranty
to 2 years and we can also keep
you informed of any product design
improvements or modifications.
Product:
Serial No:
To register your product, please go online to www.sonifex.co.uk/register

i
Warranty
Product Warranty - 2 Year Extended
As standard, Sonifex products are supplied with a 1 year back to base
warranty. In order to register the date of purchase and so that we can keep
you informed of any product design improvements or modifications, it is
important to complete the warranty registration online. Additionally, if you
register the product on the Sonifex website, you can increase your product
warranty to 2 years. Go to the Sonifex website at: www.sonifex.co.uk/
register to apply for your 2 year warranty.
Sonifex Warranty & Liability Terms &
Conditions
1. Definitions
‘the Company’ means Sonifex Ltd and where relevant includes companies
within the same group of companies as Sonifex Limited.
‘the Goods’ means the goods or any part thereof supplied by the Company
and where relevant includes: work carried out by the Company on items
supplied by the Purchaser; services supplied by the Company; and software
supplied by the Company.
‘the Purchaser’ means the person or organisation who buys or has agreed
to buy the Goods.
‘the Price’ means the Price of the Goods and any other charges incurred by
the Company in the supply of the Goods.
‘the Warranty Term’ is the length of the product warranty which is usually
12 months from the date of despatch; except when the product has been
registered at the Sonifex website when the Warranty Term is 24 months
from the date of despatch.
‘the Contract’ means the quotation, these Conditions of Sale and any
other document incorporated in a contract between the Company and the
Purchaser.
This is the entire Contract between the parties relating to the subject
matter hereof and may not be changed or terminated except in writing in
accordance with the provisions of this Contract. A reference to the consent,
acknowledgement, authority or agreement of the Company means in
writing and only by a director of the Company.
2. Warranty
a. The Company agrees to repair or (at its discretion) replace Goods
which are found to be defective (fair wear and tear excepted) and
which are returned to the Company within the Warranty Term
provided that each of the following are satisfied:
i. notification of any defect is given to the Company immediately
upon its becoming apparent to the Purchaser;
ii. the Goods have only been operated under normal operating
conditions and have only been subject to normal use (and
in particular the Goods must have been correctly connected
and must not have been subject to high voltage or to ionising
radiation and must not have been used contrary to the
Company’s technical recommendations);
iii. the Goods are returned to the Company’s premises at the
Purchaser’s expense;
iv. any Goods or parts of Goods replaced shall become the
property of the Company;
v. no work whatsoever (other than normal and proper
maintenance) has been carried out to the Goods or any part of
the Goods without the Company’s prior written consent;
vi. the defect has not arisen from a design made, furnished or
specified by the Purchaser;

ii
Warranty
vii. the Goods have been assembled or incorporated into other
goods only in accordance with any instructions issued by the
Company;
viii. the defect has not arisen from a design modified by the
Purchaser;
ix. the defect has not arisen from an item manufactured by a person
other than the Company. In respect of any item manufactured
by a person other than the Company, the Purchaser shall only be
entitled to the benefit of any warranty or guarantee provided by
such manufacturer to the Company.
b. In respect of computer software supplied by the Company the
Company does not warrant that the use of the software will be
uninterrupted or error free.
c. The Company accepts liability:
(i) for death or personal injury to the extent that it results from the
negligence of the Company, its employees (whilst in the course
of their employment) or its agents (in the course of the agency);
(ii) for any breach by the Company of any statutory undertaking as
to title, quiet possession and freedom from encumbrance.
d. Subject to conditions (a) and (c) from the time of despatch of
the Goods from the Company’s premises the Purchaser shall be
responsible for any defect in the Goods or loss, damage, nuisance
or interference whatsoever consequential economic or otherwise or
wastage of material resulting from or caused by or to the Goods. In
particular the Company shall not be liable for any loss of profits or
other economic losses. The Company accordingly excludes all liability
for the same.
e. At the request and expense of the Purchaser the Company will test
the Goods to ascertain performance levels and provide a report of
the results of that test. The report will be accurate at the time of the
test, to the best of the belief and knowledge of the Company, and the
Company accepts no liability in respect of its accuracy beyond that
set out in Condition (a).
f. Subject to Condition (e) no representation, condition, warranty or
other term, express or implied (by statute or otherwise) is given by
the Company that the Goods are of any particular quality or standard
or will enable the Purchaser to attain any particular performance
or result, or will be suitable for any particular purpose or use
under specific conditions or will provide any particular capacity,
notwithstanding that the requirement for such performance, result or
capacity or that such particular purpose or conditions may have been
known (or ought to have been known) to the Company, its employees
or agents.
g. (i) To the extent that the Company is held legally liable to the
Purchaser for any single breach of contract, tort, representation
or other act or default, the Company’s liability for the same
shall not exceed the price of the Goods.
(ii) The restriction of liability in Condition (g)(i) shall not apply to
any liability accepted by the Seller in Condition (c).
h. Where the Goods are sold under a consumer transaction (as defined
by the Consumer Transactions (Restrictions on Statements) Order
1976) the statutory rights of the Purchaser are not affected by these
Conditions of Sale.
Unpacking Your Product
Each product is shipped in protective packaging and should be inspected
for damage before use. If there is any transit damage take pictures of the
product packaging and notify the carrier immediately with all the relevant
details of the shipment. Packing materials should be kept for inspection and
also for if the product needs to be returned.

iii
CE Conformity
The product is shipped with the following equipment so please check to
ensure that you have all of the items below. If anything is missing, please
contact the supplier of your equipment immediately.
Item Quantity
Product unit 1
IEC mains lead fitted with moulded mains plug 1
Handbook 1
If you require a different power lead, please let us know when ordering the
product.
Repairs & Returns
Please contact Sonifex or your supplier if you have any problems with your
Sonifex product. Email technical.support@sonifex.co.uk for the repair/
upgrade/returns procedure, or for support & questions regarding the
product operation.
Conformity
The products in this manual comply with the essential requirements of the
relevant European health, safety and environmental protection legislation.
The technical justification file for this product is available at Sonifex Ltd.
The declaration of conformity can be found at:
http://www.sonifex.co.uk/declarations
Safety & Installation of Mains
Operated Equipment
There are no user serviceable parts inside the equipment. If you should
ever need to look inside the unit, always disconnect the mains supply
before removing the equipment covers. The cover is connected to earth
by means of the fixing screws. It is essential to maintain this earth/
ground connection to ensure a safe operating environment and provide
electromagnetic shielding.
Voltage Setting Checks
Ensure that the machine operating voltage is correct for your mains power
supply by checking the box in which your product was supplied. The voltage
is shown on the box label. The available voltage settings are 115V, or 230V.
Please note that all products are either switchable between 115V and 230V,
or have a universal power supply.
Fuse Rating
The product is supplied with a single fuse in the live conducting path of the
mains power input. For reasons of safety it is important that the correct
rating and type of fuse is used. Incorrectly rated fuses could present a
possible fire hazard, under equipment fault conditions. The active fuse is
fitted on the outside rear panel of the unit.
Power Cable & Connection
An IEC power connector is supplied with the product which has a moulded
plug attached.
The mains plug or IEC power connector is used as the disconnect device.
The mains plug and IEC power connector shall remain readily operable to
disconnect the apparatus in case of a fault or emergency.
The mains lead is automatically configured for the country that the product
is being sent to, from one of:

iv
Safety & Installation
Territory Voltage IEC Lead Type Image
UK & Middle East 230V UK 3 pin to IEC lead
Europe 230V European Schuko round 2 pin to
IEC lead
USA, Canada and
South America 115V 3 flat pin to IEC lead
Australia & New
Zealand 230V Australasian 3 flat pin to IEC lead
Connect the equipment in accordance with the connection details and
before applying power to the unit, check that the machine has the correct
operating voltage for your mains power supply.
This apparatus is of a class I construction. It must be connected to a mains
socket outlet with a protective earthing connection.
Important note: If there is an earth/ground terminal on the rear panel of
the product then it must be connected to Earth.
WEEE Directive
The Waste Electrical and Electronic Equipment (WEEE)
Directive was agreed on 13 February 2003, along with the
related Directive 2002/95/EC on Restrictions of the use of
certain Hazardous Substances in electrical and electronic
equipment (RoHS). The Waste Electrical and Electronic Equipment Directive
(WEEE) aims to minimise the impacts of electrical and electronic equipment
on the environment during their life times and when they become waste.
All products manufactured by Sonifex Ltd have the WEEE directive label
placed on the case. Sonifex Ltd will be happy to give you information about
local organisations that can reprocess the product when it reaches its “end
of use”, or alternatively all products that have reached “end of use” can be
returned to Sonifex and will be reprocessed correctly free of charge.
Atmosphere/Environment
This apparatus should be installed in an area that is not subject to excessive
temperature variation (<0°C, >50°C), moisture, dust or vibration.
This apparatus shall not be exposed to dripping or splashing, and no objects
filled with water, such as vases shall be placed on the apparatus.

1
Introduction 1
1. AVN-TB6 & AVN-TB6D 6 Button Talkback Intercoms
Introduction
The AVN-TB6 and AVN-TB6D are 6 channel talkback intercom control units from the Sonifex range of IP based AVN (Audio/Video/Network) products. The
AVN-TB6 is a freestanding version, which can be converted into a 1U rackmount using the AVN-TB6RK rack-kit. The AVN-TB6D is a desktop version that can
be fitted flush into a work surface if required. Both models offers similar functionality.
Fig 1-1: The AVN-TB6 Front Panel
Fig 1-2: The AVN-TB6D Front Panel

2
1 Introduction
These units provide broadcast quality audio communication between
studios, offices and different areas in a facility or building complex, using
RAVENNA/AES67 as the transport mechanism, allowing simple CAT 5 cabling
and expansion.
RAVENNA (of which AES67 is a subset) allows for the distribution of audio
across a network. The AVN range use RAVENNA as the communication
method providing compatibility with other AES67 systems.
Each of the 6 channels on the AVN-TB6 and AVN-TB6D can be configured to
provide communications with other remote networked intercom units or
AoIP streams, and an independently configurable page function can contact
selected units with priority over standard intercom calls if required.
There is a monitor channel that can route the audio from an AoIP source to
the headphones and speaker. This could be used to take an IFB feed or an
off-air transmission signal or simply to listen to any audio source.
A user configurable GPIO system, with 10 physical ports and 10 virtual
ports, can be used to control operational functions on local or networked
units, or drive outputs as selected states change, and a voltage free relay
contact can be used to operate external equipment.
A built-in web server provides complete configuration control of the units
and also allows for firmware updates and configuration backup. An Ember+
interface also gives access to the configuration options as well as providing
remote control and monitoring of the GPIO and virtual GPIO ports.

3
Installation 2
2. Installation
Network Connection
The AVN-TB6 and AVN-TB6D have 2 separate
gigabit network ports:
Upper Port: Configuration and control interface
Lower Port: Audio over IP (AoIP) interface
In an ideal installation, the lower port should
be connected to a dedicated network switch
that handles audio and audio related traffic
only. All other intercom units, AoIP sources and
destinations, and grandmaster clocks should be
connected to this network. The upper port can
then be connected to a separate network to
provide access to the embedded web server. With
this setup, potentially heavy network traffic on a
company LAN does not affect the performance of
the AoIP network.
The AVN-TB6 and AVN-TB6D and any other Sonifex
talkback intercoms can be used with a single
network connection using the lower (AoIP) port
as this also provides access to the embedded web
server. The talkback intercom units, AoIP sources
and destinations, and grandmaster clocks should
still ideally be connected to a dedicated network
switch.
AVN-TB6D
AVN-TB6
AVN-TB10AR
AVN-GMC
Lower
AoIP Port
Upper
Ethernet Port
Lower
AoIP Port
Upper
Ethernet Port
Lower
AoIP Port
Upper
Ethernet Port
Gigabit Ethernet Switch
Other AoIP Sources/Destinations Main Network Switch
Fig 2-1: Preferred Network Topology

4
2 Installation
Microphone
These units have connections for a microphone via a 3 pin XLR on the front
panel, or a headset via a 5 pin XLR. The headset connector is located on
the rear panel of the AVN-TB6. On the AVN-TB6D, the headset connector
is located on the front panel. Only one microphone or headset should
be connected. If phantom power is required, this can be enabled via the
webserver. See Audio - Microphone Settings web page on page 33 for
details.
GPIO
The GPIO connector provides 10 ports, individually configurable as either
inputs or outputs, via a 15 way ‘D’ type connector. Connection details are
shown on page 10 Outputs are open collector driven, and inputs are
active low. See GPIO Settings web page on page 37 for details.
Power Supply
The units can be powered from the mains via the supplied IEC lead, or by
using the optional external 12V DC power supply, part number AVN-DC150.
Please contact Sonifex Ltd sales for more details. Both power supplies can
be connected and powered at the same time to provide redundancy if
required.

5
Front Panel Controls, Connections & Indicators 3
3. Front Panel Controls, Connections & Indicators
Fig 3-1: AVN-TB6 and AVN-TB6D Front Panels
Rotary
Encoder
Control
Microphone
Input
Connector Loudspeaker
Status
Indicators
Reset
Switch
Phantom Power
Indicator
Headphone
Output
Power
Button
Channel 1 to 6 Intercom
Call Buttons
Page
Button
Listen
Button
Status
Indicators
Microphone
Input Connector
Headset
Connector
Phantom
Power Indicator
Power Button
Headphone
Socket
Channel 1 to 6 Intercom
Call Buttons
Page
Button
Reset
Switch
Rotary Encoder
Control
Loudspeaker
Mon Button
User Button
LS Mute Button
Mic Mute Button
User
Button
Mic Mute
Button
Mon
Button
LS Mute
Button
Listen
Button

6
3 Front Panel Controls, Connections & Indicators
Status Indicators
The RGB status indicators are located on the left side of the front panel.
AoIP
Indicates the status of AoIP services on the network as follows:
Green All transmit AoIP streams are available and at least one
external AoIP service is available.
Amber Either the transmit AoIP stream has not started or there
are no external AoIP services available.
Off The transmit AoIP stream has not started and there are
no external AoIP services available. The indicator will
also be off if there is no link on the AoIP network port
(lower network connector).
The AoIP network interface is configured via the embedded web server. See
the Network web page on page 25.
Ethernet
Indicates the link status of the Ethernet network port (upper network
connector) as follows:
Green The link is up.
Off The link is down.
The Ethernet network interface is configured via the embedded web server.
See the Network web page on page 25.
Talk
Illuminates green if an intercom call or page is active.
AGC
Indicates the status of the automatic gain control as follows:
Green The AGC is enabled.
Red The audio source level for one of the outputs is too high
and is being limited. The monitored outputs are the
headphone/headset output and the speaker output.
Clock
Indicates the status of PTP clock as follows:
Green The unit is a PTP slave with a clock offset of less or
equal to ±1µs or the unit is the PTP master.
Amber The unit is a PTP slave with a clock offset of between
±1µs and ±10µs.
Flash Amber The unit is in a listening state and is not yet acting as the
master or a slave.
Red The unit is a PTP slave with a clock offset of greater
than ±10µs.
Flash Red The unit is a PTP slave and no master is available.
AC PSU
Indicates the status of the internal AC-DC power supply as follows:
Green AC-DC generated voltage is within normal operating range
of +11V to +13V. This is the normal condition.
Amber AC-DC generated voltage is less than +11V or greater than
+13V. This indicates a warn condition.
Red AC-DC generated voltage is less than +10V or greater than
+14V. This indicates a fault condition.
DC PSU
Indicates the status of the DC power input as follows:

7
Front Panel Controls, Connections & Indicators 3
Green DC voltage is within normal operating range of +11V to
+13V. This is the normal condition.
Amber DC voltage is less than +11V or greater than +13V. This
indicates a warn condition.
Red Not connected or DC voltage is less than +10V or
greater than +14V. This indicates a fault condition if a DC
power source is connected.
Channel 1 to 6 Intercom Call Buttons
These buttons initiate an intercom call to a pre-configured target intercom
unit or AoIP stream. The channels are configured via the embedded web
server. See the Channels - Advanced Settings web page on page 30.
Listen Button
This button is used when making an intercom call to change the default call
type. See Listen Button on page 14 for more details.
Page Button
The page button initiates a talk only call to a pre-configured list of target
intercom units. The button flashes red when active. The target intercoms are
selected via the embedded web server. See the Page Settings web page on
page 36
Rotary Encoder Control
The rotary encoder control is used to set the volume levels for the
headphones, speaker and the input levels for the various audio inputs. See
Volume Control on page 18 for details.
Reset Switch
The recessed reset switch, located below the rotary encoder control, initiates
a full hardware reset.
Mon Button
This button activates the monitor channel. The monitor can be set to
provide audio from any AoIP source. To configure the monitor, see the
Audio - Monitor & Speaker Settings web page on page 34 for details.
User Button
This button is configurable and can be used to control various functions on
the unit. To configure this button, see the Front Panel - User Button web
page in on on page 32.
LS Mute Button
This button mutes the audio feed to the speaker. The button illuminates red
when the mute function is active. The operational mode of the button is
user configurable, see the Audio - Monitor & Speaker Settings web page on
page 34 for details.
Mic Mute Button
This button can be used to temporarily mute the microphone/headset
input. The button illuminates red when active. The operational mode of the
button is user configurable, see the Audio - Microphone Settings web page
on page 33 for details.
Microphone Input Connector
This 3 pin XLR socket is the connection for the microphone. The connections
are as follows:
Pin 1: Ground
Pin 2: Microphone Phase
Pin 3: Microphone Non-Phase
Phantom power can be supplied if required. To change the mic settings, see
the Audio - Microphone Settings web page on page 33 for details.

8
3 Front Panel Controls, Connections & Indicators
+48V Phantom Power Indicator
This indicator illuminates red when the phantom power supply is enabled. .
To change the phantom power setting, see the Audio - Microphone Settings
web page on page 33 for details.
Headset Connector (AVN-TB6D only)
This 5 pin XLR socket is the connection for the headset. The connections are
as follows:
Pin 1: Microphone Non-Phase
Pin 2: Microphone Phase
Pin 3: Ground
Pin 4: Headphone Left
Pin 5: Headphone Right
Phantom power can be supplied if required. To change the headset settings,
see the Audio - Microphone Settings web page on page 33 for details.
Headphone Output Connector
The headphone connection is via a 6.35mm (¼ inch) jack socket. The
connections are as follows:
Tip: Headphone Left
Ring: Headphone Right
Sleeve: Ground
When headphones are connected, the speaker mute is automatically
activated.
Power Switch
The power switch turns the unit on and off. When the unit is on, the
indicator is green. When the unit is off, the indicator is red. The power
switch can be disabled if required, see the Miscellaneous Settings web page
on page 39 for details.

9
Rear Panel Connections 4
Headset
Connector
Ethernet
Network
Interface
12V DC
Input
Mains
Fuse
Mains AC
Input
AoIP
SFP
Interface
4. Rear Panel Connections
Fig 4-1: AVN-TB6 and AVN-TB6D Rear Panels
GPI/O
Ethernet
Network
Interface
AoIP
SFP
Interface
GPI/O 12V DC
Input
Mains
Fuse
Mains AC
Input
AoIP
Network
Interface
AoIP
Network
Interface

10
4 Rear Panel Connections
Headset Connector (AVN-TB6 only)
This 5 pin XLR socket is the connection for the headset. The connections are
as follows:
Pin 1: Microphone Non-Phase
Pin 2: Microphone Phase
Pin 3: Ground
Pin 4: Headphone Left
Pin 5: Headphone Right
Phantom power can be supplied if required. To change the headset settings,
see the Audio - Microphone Settings web page on page 33 for details.
GPI/O
This 15 pin ‘D’ type socket provides 10 configurable general purpose inputs
or outputs and a voltage free switching relay contact. The connections are
as follows:
Pin 1 GPIO Port 1
Pin 2 GPIO Port 2
Pin 3 GPIO Port 3
Pin 4 GPIO Port 4
Pin 5 GPIO Port 5
Pin 6 Relay – Normally Open Contact
Pin 7 Relay – Normally Closed Contact
Pin 8 Relay – Common
Pin 9 GPIO Port 6
Pin 10 GPIO Port 7
Pin 11 GPIO Port 8
Pin 12 GPIO Port 9
Pin 13 GPIO Port 10
Pin 14 Fused (200mA) +12VDC Supply
Pin 15 Ground
GPIO ports configured as an output are open collector type. GPIO inputs are
active low. See the GPIO Settings web page on page 37 for details on how
to configure the GPIO and relay settings.
Ethernet 1GB & AoIP 1GB Network
Interfaces
These RJ45 connectors are the gigabit network ports. The upper connector
is the configuration and control port and the lower connector is the audio
over IP (AoIP) port.
AoIP SFP Interface
This SFP (small form-factor pluggable) connector allows an alternative
interface type to be used for the AoIP port, for example fibre. If a SFP
interface is used, the AoIP network port cannot be used at the same time.
12V DC Input
This 4 pin connector allows an external +12V power supply to be used to
power the unit. When looking at the rear of the unit, the pin locations and
connections are as follows:
Location Connection
Pin 1 Upper Left +12V DC
Pin 2 Upper Right +12V DC
Pin 3 Lower Left 0V
Pin 4 Lower Right 0V
Both the 12V DC input and the mains AC input can be connected at the
same time.
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