The product is using special balance characteristic impedance conversion transmission and audio analog audio spread spectrum isolation technology, it has anti-interference and EMI capabilities.
It can solve the problems of super length audio input line or ground electricity position which caused by equipment distortion and audio noise, and elimination of audio background noise.

Features

• One way MIC audio twisted pair transmission.
• Unbalanced switching transmission mode is adopted with strong resistance to common mode interference.
• Support passive or active microphone (48V magic synchronization), transmission distance up to 268m.
• Special audio spread spectrum isolation technology is adopted.
• Broadcast level hi-fi ground loop,ground loop audio isolation.
• No power required, works continuously all day, stable and reliable performance

Specification

• One way Stereo high fidelity audio transmitter
• Applied range:High fidelity distribution display, set top box,HI-FI home theater, big screen video meeting,republic video broadcast system,Distance multimedia education,classroom and hospital,Military field, HDMI video media advertise transmission display
• Band width: 20Hz~20KHz
• Peak value of input signal: 1.25Vp-p
• Input and output impedance: 600 Ω minimum (signal source)
• Insert loss:＜2dB
• Signal reflectivity:＞15dB
• CMRR:＞60dB
• Phantom synchronous transmission distance:268 meters
• Signal structure:
  • Audio: Pins 1(R) 2(T) | Pins 7  8 (Overhang)
  • Power: Pins 4 6 (48V) | Pins 3 5 (GND)
• Standard twisted pair characteristics:
  • Characteristic impedance:100Ω
  • Distributed capacitance:20 pf/ft
  • Reduce:6.6 dB/305m @1 MHz
• Interface characteristics: 1 x XLR connector | 1 x RJ45 network port
• Humidity: 0-95

IMPORTANT NOTE : 48V Phantom electricity dialing switch state; Wrong use ways will be able to destroy mic-phone, The equipment does not have 48V; Phantom electricity supply; Only support 48V phantom electricity transmission.