Sonifex AVN-TB20AR 20 Button Advanced Talkback Intercom, AoIP Portal

AVN-TB20AR 20 Button Talkback Intercom Advanced, Rackmount

The AVN-TB20AR is a 2U rackmount 20 button version of the AVN-TB10AR with the same specification, but more station buttons allowing greater communication for larger facilities. It also has ‘GPI/O’ and ‘Phone’ buttons for remote control of external equipment and Sonifex DHY-04 telephone hybrids, useful in an OB truck or production gallery.

Category: Audio Over IP Products.
Product Function: An advanced talkback/listening/paging intercom unit to enable voice/audio communication between different areas in a facility or building complex.
Typical Applications: OB truck comms, theatre comms, inter-studio comms in a TV or radio station.

Features

:
20 illuminated key-cap Talk buttons plus Listen & Page buttons.
Phone button for remote dialling and control of an external telephone hybrid.
Page button and Group Talk facilities.
Callback button with callback source display.
Three user definable buttons.
Speaker & microphone mute buttons.
Mic & headset inputs (front & rear panel headset connection), headphone & speaker outputs.
Front panel volume control which operates on speaker/headphone outputs and incoming source levels.
+48V phantom power for the mic inputs.
Ethernet webserver and front panel control & configuration.
Front panel display providing source & destination information.
Sources from AoIP, 1 x 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.
GPI/O button for triggering external events, via physical GPIO or network commands.
Front panel LEDs for network audio presence, Talk activity, AGC activity, clock sync and power supply activity.
Two front panel monitor buttons for routing audio directly to the speaker e.g. to take an IFB feed or off-air transmission signal.
Ducking or mixing of inputs to speaker/headphones.
Dual AC & DC power supply inputs.

AVN Talkback Diagram

Webserver Software

Each AVN-TB talkback unit has a built-in webserver for setup and configuration. The webserver is responsive, and resizes depending on the size of your screen, meaning that it can be used on large monitors or small handheld devices such as smart-phones. Help information is shown on the right hand side of the screen so it’s a good place to go to find out how the unit operates.

Talkback Intercoms Using Audio Over IP, RAVENNA/AES 67
Our new range of AVN (Audio/Video/Network) talkback/listening/paging intercoms aid communication between studios, stages, theatres, offices and different areas in a facility or building complex. They have both 4-wire and AoIP sources and destinations, and use RAVENNA/AES67 as the audio transport mechanism, allowing simple CAT 5 cabling and expansion.

Specification For AVN-TB20AR
Audio-Over-IP Specification
Open Standards:	RAVENNA, AES67
Device Discovery:	Bonjour (mDNS / DNS-SD)
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 25, 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:	>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:	>20kΩ
0dBFS Line-Up:	+12dBu
Frequency Response:	20Hz to 20kHz, +0/-0.2dB
THD+N:	<-97dBFS, -30dBFS, 20Hz to 20kHz, unity gain, 20kHz BW
Noise:	-100dBFS, 20kHz BW, Rs=200Ω
Crosstalk:	<-97dB

Balanced Line Inputs
Input Impedance:	>20kΩ balanced
0dBFS Line-Up:	Adjustable +15/+18/+20/+22/ +24dBu
Frequency Response:	20Hz to 20kHz, +0/-0.2dB
THD+N:	<-110dBFS, -30dBFS, 20Hz to 20kHz, 20kHz BW
Noise:	-110dBFS, 20kHz BW, Rs=200Ω
Crosstalk:	<-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:	<-108dBFS, -30dBFS, 20Hz to 20kHz, unity gain, 20kHz BW
Noise:	-110dBFS, 20kHz BW

Unbalanced Line Outputs
Output Impedance:	<50Ω
0dBFS Line-Up:	+12dBu
Frequency Response:	20Hz to 20kHz, +0/-0.2dB
THD+N:	<-95dBFS, -30dBFS, 20Hz to 20kHz, unity gain, 20kHz BW
Noise:	-100dBFS, 20kHz BW

Balanced Line Outputs
Output Impedance:	<50Ω balanced
0dBFS Line-Up:	Adjustable +15/+18/+20/+22/ +24dBu
Frequency Response:	20Hz to 20kHz, +0/-0.2dB
THD+N:	<-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-TB20AR:	20 channel rackmount talkback intercom control unit with RAVENNA AoIP

Physical Specification
Dimensions: (Raw)	48.3cm (W) x 17.5cm (D) x 8.8cm (H)(2U) 19” (W) x 6.9” (D) x 3.6” (H) (2U)
Dimensions (Boxed):	59cm (W) x 28cm (D) x 15cm (H) 23” (W) x 11” (D) x 5.9” (H)
Weight:	Nett: 3.7kg Gross: 4.4kg Nett: 8.1lbs Gross: 9.7lbs

Sonifex AVN-TB20AR 20 Button Advanced Talkback Intercom, AoIP Portal

Webserver Software

Specification For AVN-TB20AR

Audio-Over-IP Specification

Timing Synchronisation

Technical Specification

Microphone and Headset Input

Unbalanced Line Inputs

Balanced Line Inputs

Headphone Output

Unbalanced Line Outputs

Balanced Line Outputs

Loudspeaker

Connections

Equipment Type

Physical Specification