The APT MULTI-CHANNEL CODEC can transport multiple channels of audio over T1 or E1 links. In its 1U Frame, it can accommodate up to 3 slimline audio cards delivering simplex/duplex and analog/digital audio via a universal 37-way D-type connector.
Based on a rock-solid DSP-based architecture designed for round-the-clock operation, this modular unit offers hot-swappable cards for uninterrupted audio, redundant power supplies and exceptional audio quality with linear, aptX® Enhanced and many other coding schemes.
The MCU module controls the operation of all other modules in the system, allocating them time slots on the backplane and sending configuration information. It enables:
The T1/E1 module is one of the most common choices for audio transport due to the reliability and widespread availability of T1 and E1 circuits.
Key advantages include:
The slimline universal audio module for the APT E1/T1 MULTI-CHANNEL CODEC offers a 37-way D Type connection. Four physical slots on the 1U chassis allow the population of up to three payload modules (Audio or Aux) and one T1/E1 transport card.
This results in 12 simplex and 6 duplex channels. Each module offers four audio channels which can be either four encode, four decode or two encode and two decode.
Offering a high level of flexibility and channel density, the universal audio card can provide either dual stereo or quad mono channels in simplex mode. Individual channels can be enabled and disabled or routed to different destinations. For example, on a T1/E1 link, stereo A can go to the main T1/E1 link and stereo B on the secondary, the drop and insert circuit.
The E1 module is available with both RJ45 and BNC connectors.
With a modular, single-platform approach, multiple layers of redundancy and exceptional scalability and flexibility, the APT E1/T1 MULTI-CHANNEL CODEC is the perfect solution for Studio-Transmitter Links, Studio-Studio Links, Remote broadcast, backhaul and studio linking applications.
«It’s been my experience that the audio quality of devices built by APT is unsurpassed, and the multi-channel codec is no different. It’s a real pleasure to listen to. The unit is built extremely well, and I have the utmost confidence in it.»
Doug Irwin CPBE, DRB, AMD, RF Engineer /Project Manager, iHeartMedia, Los Angeles & Technical Editor, Radio Magazine, USA
|Universal Audio Module|
|Audio Inputs / Outputs||Analog and AES/EBU on 37 pin D-Type connector, delivered with XLR breakout cable|
|Audio Modes||Simplex: 2x stereo Input or 2x stereo output, Duplex: 1x stereo Input and Output|
|Impedance||Digital, 110/110 Ω transformer balanced, Analog, Hi/Lo or 600 Ω (order option)|
|Digital Ref Input||AES, transformer balanced, Imp. 110 Ω|
|Digital Operation||Output FS, 32 kHz, 44.1 kHz, 48 kHz|
|Audio Bandwidth||10Hz to 20kHz mono & stereo|
|Standard Coding Algorithms||aptX Enhanced 16 & 24 Bit, Linear PCM 16, 20 & 24 Bit, MPEG 1/2 Layer II*, ITU G.57, J41*|
|Coding Delay||min. 2ms on aptX Enhanced and higher depending on chosen algorithm|
|Dynamic Range||16 Bit >85dB, 24 Bit >110dB|
|T1/E1 Line Ports||2x RJ45, transformer balanced / 1x RJ45 ext. BITS clock|
|T1/E1 Modes||Drop/Insert or Dual Line (one Clock domain)|
|Data Port||X.21 (DCE) Data rates 64 kbps to 1984 kbps|
|Payload Rate||E1: 31TS (1.984kbps) / T1: 24TS (1.536kbps)|
Internal, BITS, Loop-Timing
|Framing||E1: ITU G.703/704 (CRC-4 MF, DF) / T1: ESF and SF/D4|
|Aux/GPIO Data Module|
|Serial Data (5 ports)||5x RS232 ≤ 9.600 Baud @ 64 kbps|
|GPIO||8 opto-coupler inputs / 8 relay contact closures|
|System Controller (MCU)|
|Ethernet Port||100BaseT for Management access|
|Alarm Relays||7 Relays for user defined alarms|
|Control||APT NMS, SNMP, ext. preset switches (loads up to four configuration presets)|
|19” rack mount 1U, Dimensions (H/W/L)||44mm x 482mm x 370mm / 1.75” x 19” x 14.5”|
|Payload Capacity||3x Universal Audio Module OR ; 2x Universal Audio Module, 1x AUX/GPIO Module|
|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)|
* Cost option
|STP00032||MCU System controller and NMS Software for APT Codec frame 1U (E1/T1 version only)|
|E1/T1 Transport Modules (4HP)|
|STP00037-A0||E1 multiplexer RJ45, 2 Line Ports and ext. Clock (120 Ohm), X.21Data Interface|
|STP00037-A2||E1 multiplexer BNC, 2 Line Ports and ext. Clock (75 Ohm), NO Data Interface|
|STP00052-A0||T1 multiplexer RJ45, 2 Line Ports and ext. Clock (120 Ohm), X.21 Data Interface|
|STP00052-A2||T1 multiplexer BNC, 2 Line Port, ext. Clock (75 Ohm), NO Data Interface|
|Universal Audio Modules (4HP)|
|STP00040-A0||4Ch. Audio Card (front/rear) analog/digital, analog Imp. HI/LO (with breakout cable)|
|STP00040-A1||4Ch. Audio Card (front/rear), analog/digital, analog Imp. 600 Ω (with breakout cable)|
|CD00126||MPEG Layer II option (per audio card)|
|CD00125||ITU J.41/J.57 option (per audio card)|
|CD00127||ITU J.41/J.57 and MPEG Layer II option (per audio card)|
|Aux//GPIO Data Module (4HP)|
|STP00043||Auxiliary Data Card|
|TFP0109-A0||APT Codec Frame with AC/AC PSU|
|TFP0109-A1||APT Codec Frame with DC/DC PSU|
|TFP0109-A2||APT Codec Frame with AC/DC PSU|