Overview
The AVN-TB products are IP audio based talkback intercom units with an advanced feature set, allowing them to be used in multiple applications. With both 4-wire analogue inputs and outputs, as well as AoIP network audio connectivity, the AVN-TB units can be used with existing legacy 4-wire systems and with new AES67 AoIP networked audio infrastructure. The AVN-TB10AR is a 10 button intercom with 10 illuminated key-cap Talk buttons, Listen & Page buttons, and mic & headset inputs. It also has headphone & speaker outputs with volume control. The unit has sources from AoIP, balanced, 2 x unbalanced or S/PDIF digital inputs, and destinations to AoIP or rear panel balanced & unbalanced outputs. With advanced echo cancellation & mic AGC, acoustic feedback is prevented. It also has dual 1Gb lan ports & 1Gb SFP fibre port, 10 user assignable GPIO ports, and dual AC & DC power supply inputs. The front panel display provides source & destination information and the unit has an Ethernet webserver for control & configuration.
The AVN-TB10AR has a Callback button with source display and allows for communication with other stations on the AoIP network. It uses RAVENNA as the communication method and is compatible with other AES67 systems. The unit has a built-in webserver for settings and configurations and a front panel OLED display for configuration. It can act as a PTP masterclock or slave clock and has front panel LEDs to show the AoIP network status, synchronisation status, and power supply inputs. It also has 10 GPIOs and a programmable relay output for critical states. The AVN-TB10AR has a front panel power button and dual power connectors for both studio and mobile installations. It also has a secondary power source for backup and monitors the status of both power sources.
Included in box
1x TB10AR Intercom
About the Sonifex AVN-TB10AR Intercom
The AVN-TB products are IP audio based talkback intercom units with an advanced feature set, allowing them to be used in multiple applications. With both 4-wire analogue inputs and outputs, as well as AoIP network audio connectivity, the AVN-TB units can be used with existing legacy 4-wire systems and with new AES67 AoIP networked audio infrastructure. Additionally, all audio is at 48kHz sample rate, meaning that it’s broadcast quality audio as standard. 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.
The AVN-TB10AR is a 10 button intercom meaning that 10 other ‘stations’ can be defined, one per button, for communication. Comms can be made as a Talk action, a Listen action or a duplex Talk/Listen action to/from each station. Coloured LEDs in the buttons help to show which action is being used and there is also a Callback button for when you’re unavailable to receive a call. The stations can be from anywhere on the AoIP network and the use of Bonjour Device Discovery means that other stations can be found quickly and sometimes automatically. The Page button is used to speak to all stations (or a defined list of stations) and Group Talk functions can be enabled to page particular groups of stations.
Two monitor buttons allow for routing audio directly to the speaker e.g. to take an IFB feed or an off-air transmission signal. Signals can be ducked or mixed when a talkback input is received to the speakers or headphones. Three user defined buttons can be programmed for different functions, such as for Group Talk.
The speaker mutes automatically when headphones are inserted and the volume level of headphones, speaker and incoming sources can all be controlled with one front panel rotary encoder volume control knob, which shows the level using RGB LEDs around the outside of the knob. Advanced acoustic echo cancellation & built-in microphone AGC (automatic gain control) ensure that there’s no acoustic feedback between microphone and speaker. Buttons are available for microphone mute (cough) and speaker mute actions and these can be controlled remotely by GPI or network commands.
Each unit has a built-in webserver which is where the majority of settings and configurations are made. The front panel OLED display can also be used to configure the unit, although more functionality is available by using the webserver. The webserver is a responsive design meaning that it can be used with small screens on smartphones and tablets. The unit can act as a PTP masterclock or slave clock and supports IEEE1588-2008 PTPv2 media and default profiles.
Front panel LEDs show the AoIP network status, synchronisation status, whether AGC is being used and the status of the AC and DC power supply inputs. The brightness of the OLED display and LED indicators can be adjusted for low or high lighting conditions.
The unit has a front panel power button and dual power connectors – an IEC mains input and a 12V DC input, which allows the AVN-TB10AR to be used for both studio and mobile installations. Also, a secondary power source reduces the effect of power down events. In any case, the unit monitors the status of both power sources and displays this on the front panel. 10 GPIOs (general purpose inputs/outputs) and a programmable relay output can be configured to indicate critical states for the unit, via the 15 way D-type connector, for example, to show loss of DC power, or to show a button press action.
Audio-Over-IP Specification
Open Standards: RAVENNA, AES67
Device Discovery: Bonjour (mDNS / DNS-SD) & SAP
Audio Delivery: RTP/UDP over IPv4 multicast
QoS: DiffServ
Stream Management: RTSP/SDP
Control: Ember+/webserver
Format: Linear PCM 24-bit (L24)
Channels Per Stream: 2
Frames Per Packet: 48
Maximum Streams: RX 15, TX 5 (fixed)
Sample Rate: 48 kHz
Timing Synchronisation
Profile Support: Default, media & custom profiles
Timing Protocol: PTPv2, IEEE1588-2008
Technical Specification
Microphone and Headset Input
Input Impedance: less than 2.5kΩ balanced
Gain Range: 0dB to +60dB
0dBFS Line-Up: Adjustable in steps of 3dB from -58dBu to +2dBu
Frequency Response: 20Hz to 20kHz, +0/-0.2dB
Noise: -127dBu, 20kHz BW, Rs=200Ω ref. 76dB gain
Unbalanced Line Inputs
Input Impedance: less than 20kΩ
0dBFS Line-Up: +12dBu
Frequency Response: 20Hz to 20kHz, +0/-0.2dB
THD+N: more than -97dBFS, -30dBFS, 20Hz to 20kHz, unity gain, 20kHz BW
Noise: -100dBFS, 20kHz BW, Rs=200Ω
Crosstalk: more than -97dB
Balanced Line Inputs
Input Impedance: less than 20kΩ balanced
0dBFS Line-Up: Adjustable +15/+18/+20/+22/ +24dBu
Frequency Response: 20Hz to 20kHz, +0/-0.2dB
THD+N: more than -110dBFS, -30dBFS, 20Hz to 20kHz, 20kHz BW
Noise: -110dBFS, 20kHz BW, Rs=200Ω
Crosstalk: more than -100dB
Common Mode Rejection: >70dB @ 1kHz
Headphone Output
Output Impedance: Drives 150mW into 32Ω to 600Ω headphones
0dBFS Line-Up: +20dBu
Frequency Response: 20Hz to 20kHz, +0/-0.2dB
THD+N: more than -108dBFS, -30dBFS, 20Hz to 20kHz, unity gain, 20kHz BW
Noise: -110dBFS, 20kHz BW
Unbalanced Line Outputs
Output Impedance: more than 50Ω
0dBFS Line-Up: +12dBu
Frequency Response: 20Hz to 20kHz, +0/-0.2dB
THD+N: more than -95dBFS, -30dBFS, 20Hz to 20kHz, unity gain, 20kHz BW
Noise: -100dBFS, 20kHz BW
Balanced Line Outputs
Output Impedance: more than 50Ω balanced
0dBFS Line-Up: Adjustable +15/+18/+20/+22/ +24dBu
Frequency Response: 20Hz to 20kHz, +0/-0.2dB
THD+N: more than -110dBFS, -30dBFS, 20Hz to 20kHz, 20kHz BW
Noise: -110dBFS, 20kHz BW, Rs=200Ω
Loudspeaker
Power Output: 4W
Volume: Mute to full volume via front panel control
Connections
Microphone: XLR-3 pin female (electronically balanced)
Headphone: ¼ inch (6.35mm) stereo jack socket
Headset: 2 x XLR-5 pin female (front/rear electronically balanced input)
Audio Inputs: 2 x unbalanced stereo, RCA phono
1 x S/PDIF, RCA phono
Audio Outputs: 1 x balanced stereo, RJ45
1 x unbalanced stereo, 2 x RCA phono
1 x loudspeaker output
Audio Input/Output: 1 x balanced stereo input or mono input/output, RJ45
GPIO: 15-way ‘D’-type socket
Network: 2 x gigabit Ethernet, RJ45
1 x SFP fibre
Mains AC Input: Universal filtered IEC, continuously rated 85-264VAC, 47-63Hz, 20W
DC Input: 4 pin 7.5A power jack socket, 9.5-14VDC
Fuse Rating: Anti-surge fuse 2A 20mm x 5mm
Equipment Type
AVN-TB10AR: 10 channel rackmount talkback intercom control unit with RAVENNA AoIP
Physical Specification
Dimensions: (Raw) 48.3cm (W) x 17.5cm (D) x 4.4cm (H)(1U)
19” (W) x 6.9” (D) x 1.8” (H) (1U)
Dimensions (Boxed): 59cm (W) x 28cm (D) x 11cm (H)
23” (W) x 11” (D) x 4.3” (H)
Weight: Nett: 2.4kg Gross: 3.1kg
Nett: 5.3lbs Gross: 6.8lbs
10 illuminated key-cap Talk buttons plus Listen & Page buttons
Mic & headset inputs, headphone & speaker outputs with volume control
Sources from AoIP, balanced, 2 x unbalanced or S/PDIF digital inputs
Destinations to AoIP or rear panel balanced & unbalanced outputs
Advanced echo cancellation & mic AGC to prevent acoustic feedback
Dual 1Gb lan ports & 1Gb SFP fibre port
10 user assignable GPIO ports
Dual AC & DC power supply inputs
Front panel display providing source & destination information
Ethernet webserver and front panel control & configuration
Speaker & microphone mute buttons
Callback button with source display
