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14 Technical Specifications
14. Technical Specifications
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:
Web server/Ember+
Format:
Linear PCM 24-bit (L24)
Channels Per Stream:
2
Frames Per Packet:
48
Transmit Streams:
1 (fixed)
Sample Rate:
48 kHz
Ember+ Interface Connection
Interface Type:
Provider
Network Interface:
Ethernet port and AoIP port
Port: 9000
Timing Synchronisation
Profile Support:
Default, AES67 Media & Custom profiles
Timing Protocol:
PTPv2, IEEE1588-2008
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
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
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:
1 x XLR-5 pin female (electronically balanced
input)
GPIO:
15-way ‘D’-type socket
Network:
2 x gigabit Ethernet, RJ45 1 x SFP
Mains AC Input:
Universal filtered IEC, continuously rated
85-264VAC, 47-63Hz, 20W
DC Input:
4 pin 7.5A power jack socket, 10-14VDC
Fuse Rating:
Anti-surge fuse 2A 20mm x 5mm
Equipment Type
AVN-TB6:
6 channel freestanding talkback intercom
control unit with RAVENNA AoIP
AVN-TB6D:
6 channel desktop talkback intercom control
unit with RAVENNA AoIP
