HC-DM-AU

HC-DM-AU Audio Transmission Device

Overview

HC-DM-AU audio transmission device provides conversion between the audio signal and the framed G.703/E1 signal. The audio signal can be transmitted through the E1 by this device. It’s widely used in high-quality broadcast and other applications like hi-fi audio transmission

Feature

Provide 2 E1 port and support chain or ring connection

Can configured by the CLI through the NM port

Support GUI management

Both 220V AC/-48V DC power supply

Specification

E1 interface:

Provide 2 E1 port

Comply with ITU-T G.703/G.704 standard

Impedance: 75 Ω unbalance/120 Ω balance user-selectable

Connector: BNC for 75 Ω and the RJ45 for the 120 Ω

Audio interface:

Provide 2 audio ports

Audio bandwidth: 10Hz~20kHz

Input and output impedance: 600Ω

Input and output signal’s peak voltage: 1.5V

Sampling frequency: 32k

Input: S/ (N+D): 85dB, (S/N): 89dB

Output: S/ (N+D): 85dB, (S/N): 92dB

Quantization precision: 16 bit

Others

Power supply: both 220V AC and -48V DC

Power dissipation: < 8W

Dimension: 19” 1U

Enviroment

Operating temperature: -5°C~+45°C

Store temperature: -20°C~+70°C

Relative humidity: 5%～90% no coagulation