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E1+1Channel Stereo Audio Codec

Type:FCA-E1A1-B Message

Description:E1 audio codec ,can transfer a bidirectional stereo audio channels in a channel E1

Product Description
             E1 Audio Codec is designed by using FPGA digital codec and clock recovery technology. It is applied to broadcasting program source transmission equipment. Audio codec is to frame the stereo audio input signals or AES digital audio signal after A/D digital codec conversion or data format forming a serial data stream output from E1. Audio codec will accept E1 serial data after clock recovery and the split frame recover audio signal stereo audio or AES digital audio output.

Functional Properties
Ø Machine design for veneer 
Ø Using FPGA digital codec and clock recovery technology high integration high stability
Ø Using advanced digital processing clock recovery and digital codec chip. The performance is better.
Ø The panel has LED that indicates E1 stereo and digital audio signal operation condition.
Ø Using SDH PDH microwave 2M channel point to point transmission of audio signal source.
Ø Meet the E1 interface Distributor can achieve one transmission more receive broadcast transmission of  audio signal source.
Ø Applied to province city county and town area group network to realize long distance transmission of audio     signal source.
Ø E1 interface complied with protocol G.703 using digital clock recovery and smooth phase-locked technology

Ø Audio interface three-level lightning-protection reached IEC61000-4-5 (8/20μS) DM(Differential Mode): 6KV      Impedance (2 Ohm)

       CM(Common Mode): 6KV Impedance (2 Ohm) standard

Ø AC220V DC-48V/DC24V optional; 

Technical Parameters

u   Ethernet interface 

    Interface Standard:  comply with protocol G.703;

    Interface Rate:  2048Kbps±50ppm;

    Interface Code: HDB3;

    Impedance:   75Ω (unbalance) 120Ω (balance);

    Jitter tolerance: In accord with protocol G.742 and G.823

    Allowed Attenuation: 0~6dBm

u   Audio interface 

    Audio input/output interface: (RCA) unbalanced 0dBm/600Ω
    Maximum input level: ≥ 9.5dBm
    Audio Gain: ± 0.1 dB
    Audio A/D sampling: 24bit
    Audio signal-to-noise ratio (weighted): ≥ 75dB
    Bandwidth:  20Hz~20KHz
    Nonlinear distortion coefficient: ≤ 0.2%
    Frequency: ≤ ± 0.5 dB

u   Power


    Power supply: AC180V ~ 260V;DC –48V;DC +24V

    Power consumption: ≤3W

u   Dimension          

    Product size:        216X138X31mm(WXDXH)
    Simple packaging:  483X138X44mm(WXDXH)

u  Working environment

    Working temperature: -10°C ~ 50°C
    Working Humidity: 5%~95 % (no condensation)
    Storage temperature: -40°C ~ 80°C
    Storage Humidity: 5%~95 % (no condensation)

Application Scheme

E1+1Channel Stereo Audio Codec


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