Audio equipment XLR Stereo Audio to E1 Codec

E1 audio codec is designed with digital processing chip and large-scale FPGA, digital codec conversion and clock recovery technology. This device is suitable for broadcast source transmission.The audio encoder converts the input stereo audio signal by A/D digital codec conversion or data format, and then re-frames to form a serial data stream, and output by the E1 port.

● Machine is a single board design;

● Use FPGA, digital encoding and decoding and clock recovery technology, high integration, high stability.

● The audio interface is the XLR card balance interface, the audio power supply is high power toroidal transformer +-18V power supply, high dynamic range;

● Use of advanced digital processing, clock recovery, digital codec chip, its performance is better.

● Panel has LED lights indicate working status in real time E1, a digital audio and stereo signals.

● Use of SDH, PDH, microwave 2M channel, point to point transmission of audio sources.

● Dispenser with E1 interfaces can be implemented out of the overcharged broadcast transmission of audio sources.

● Apply to provincial, city, county, township area network, to achieve ultra-long haul transmission of audio sources.

● E1 interface complies with G.703 recommendation, all-digital clock recovery and smooth phase-locked technology;

● Audio interface three mine, to IEC61000-4-5 (8 / 20μS) differential mode: 6KV, impedance (2Ω); common-mode: 6KV, impedance (2Ω) Standard

● Multiple power mode options: AC220V, DC-48V / DC24V and the like.

● Audio

Signal level:                                 0.5-4Vp-p

Input / output impedance:    600Ω (unbalanced or balanced)

AD / DA-bit wide:                  24Bit

Sampling frequency:                   128K

Bandwidth:                                   20Hz-20KHz

Total harmonic distortion:   <1%

Noise ratio (SNR):                 > 85dB

Connecting terminal:                  XLR (XLR) balanced interface

● E1 Interface

E1 interface protocol: ITU-T G.703, 

Interface Rate: 2048Kbps±50ppm

Interface Code: HDB3;

E1 Impedance:              75Ω (unbalance L9), 120Ω (balance RJ45);

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

Allowed Attenuation: 0~6dBm

● Electrical and mechanical characteristics

Voltage: AC165V ~ 265V; DC -48V; DC + 24V

Power: ≤5W

● Environmental Indicators

Working temperature: -10 ℃ – + 70 ℃

Storage temperature: -40 ℃ – + 85 ℃

Humidity: 0% -95% (non-condensing)

MTBF: > 100,000 hours