
The APT MULTI-CHANNEL CODEC is a compact and efficient solution for the transport of multiple channels of audio or MPX content over IP links. It can support up to 16 channels of audio within a single unit of rackspace – and even more IP streams when using multicast or multiple unicast technology.
The 1RU frame can accommodate up to 4 AoIP modules, each equivalent to a stand-alone stereo duplex codec combining audio, dual IP transport and auxiliary data on board. It offers the entire range of audio formats and modes meeting the audio industry’s requirements: simplex, duplex, AES/EBU, AES/EBU with analog backup, analog with HI/LO or 600Ω impedance.
- Transports up to two stereo audio channels per module
- Deliver up to 24 IP audio streams per module
- 192kHz Sampling supports Digital MPX over AES and fully digital transfer*
- Simplex and duplex operational modes
- Analog MPX I/O interface allows transport of two analog MPX signals or one MPX signal in duplex mode
- Point-to-Point and Point-to-Multipoint operation
- Four Independent Clock Domains per module
- Supports Dynamic DNS for global accessibility by hostname rather than IP address
- Supports UPnP IGD protocol for configuration of UPnP enabled gateways (routers)
- Forwarding of audio or non-audio (such as PAD or HD Exporter data) UDP Streams
- Supports “Diffserv” Quality of Service (QoS) on variable DSCP values
- Support of VLANs and virtual IP interfaces enables multi-network integration for streaming and management
- Performance monitoring on each individual IP stream
- User selectable packet size for each stereo audio channel
- Configurable delay-jitter buffer for each receive IP stream (1 ms to 5000 ms)
- Headphone socket for audio monitoring
- Supports APT’s award winning SureStream for high quality audio over open Internet links
Interfaces | |
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Ethernet: | Dual physical Ethernet ports, RJ45 for management and streaming |
Virtual Network: | Virtual Interfaces and VLAN tagging |
Analog I/O: | Electronically balanced, capacitive isolated on 37 pin D-Type connector1) Imp. Hi/Lo and 600 Ω |
Digital Audio I/O: | AES-3, 24 Bit, transformer balanced, on 37 pin D-Type connector#2 Imp. 110 Ω |
Digital Ref Input: | AES, transformer balanced, on 37 pin D-Type connector#2, Imp. 110 Ω |
Serial Aux Data and GPIO: | 15 pin HD-Type, 2x serial on RS232 level, 4x opto-coupled inputs and relay contacts |
Management: | Web GUI, APT NMS, SNMP, XML API (available with a later release) |
Audio | |
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Asymmetric Audio: | Independent audio modes for sent and receive, independent clock domains |
Audio Modes: | Simplex: 2x stereo Input or 2x stereo output; Duplex: 1x stereo Input and Output |
Digital Operation: | Output FS, 32/44.1/48/96/192* kHz – software configurable |
Audio Bandwidth: | 10Hz to 20kHz mono & stereo 85kHz for digital MPX over AES* |
Standard Coding Algorithms: | aptX Enhanced 16 & 24 Bit, Linear PCM 16 & 24 Bit, MPEG 1/2 Layer II, MPEG4: AAC-LC/LD/ELD, MPEG2/4: HE-AAC v1/v2 |
Coding Delay: | min. 2ms on aptX Enhanced and higher depending on chosen algorithm |
Dynamic Range: | 16 Bit >85dB, 24 Bit >110dB |
Network and IP | |
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IP Protocols Supported: | RTP/UDP/IP, RTCP, DNS, Dynamic DNS, DHCP, ICMP, IGMP, VLAN#, UPnP (IGD), NTP, SNMP, SMTP, HTTPS (management) |
IP Statistics: | Complete IP Statistics for each stream |
Casting Modes: | Unicast, multiple unicast, multicast, multi- multicast |
De-Jitter Buffer: | Buffer size 1 - 5,000ms adjustable, automatic packets re-sequencer |
RTP/UPD Streaming and Modes: | Multiple Tx-Streams, 2x Rx Streams, UDP stream forwarding, Auto-Detection of received Stream, Auto-Reply to sender |
Quality of Service: | DiffServ, with separate DSCP values per stream, SureStream Technology and Error Concealment |
Backup Features: | SD Card for audio file storage |
Network Security: | Service Filter and Firewall Features |
Data | |
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Serial Data Rates (embedded): | 11200, 2400, 4800, 9600 Baud (2 channels per AoIP module) |
Serial Data Rates via IP: | 1200 - 115,200 Baud (2 channels per AoIP module) |
AUX Data via UDP: | UDP forwarding PAD or private Data |
GPIO: | 4 switch inputs, 4 relays; GPI transmitted as separate UDP stream or embedded in aptX Enhanced |
Physical specification | |
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19” 1U Dimensions (H / W / L): | 44mm x 482mm x 370mm 1.75” x 19” x 14.5” |
Weight: | 5Kg / 11lbs |
Dual Power Supply: | 90-250 VAC / 47-60 Hz or 36-72VDC, AC/AC, AC/DC, DC/DC (order options) |
Power Consumption: | < 60W |
Guaranteed Working Temperatures: | 0°C - +45°C |
Humidity: | Up to 95% relative humidity (non-condensing) |
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