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FMUSER INTERNATIONAL GROUP INC

Address: Room305, HuiLanGe, No.273 HuangPu Road West, TianHe District., GuangZhou, China, 510620

Address in Chinese: 广州市天河区黄埔大道西273号惠兰阁305

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Home > News > FM Broacast

FMUSER Studio Transmitter Link Equipment Digital STL Video Audio Transmission System For Radio TV Station

Published:2020/12/29 17:21:54 Visits:

1. Functional overview:


The FMUSER digital STL audio and video transmission system is a professional system  which can transmit 4 stereo (or 8 mono) analog/digital audio signals and 1 digital video signal wirelessly from the studio to the transmitting station. The system uses state-of-the-art software-defined radio (SDR) technology, digital code modulation, digital demodulation and decoding to transmit and receive, enabling audio/video signals to be transmitted at very high quality and with virtually no damage.


One set of FMUSER standard configuration STL system equipment has a transmission distance of 60 kilometers in line of sight. The FMUSER transmission system consists of STL transmitter, transmission filter, transmitting antenna & feeder cables, receiving antenna & feeder cables and STL receiver.

The diagram as below:


Specification:

Item

Value

General Technical Specifications

Working Frequency

100MHz1000MHz, continuously adjustable, stepping amount 10KHz

Frequency stability

2ppm

Transmitting power

2W @ shoulder >45dB, out-of-band spurious <-80dBc

Modulation type

Stereo audio signal [email protected]; ASI signal 15MBit/[email protected]

Receive sensitivity

32 QAM/-78dBm @80dB S/N

Input/output audio signal

Analog audio signal or digital audio signal (AES/EBU)

Input/output video signal

ASI

Working temperature

-10~+50

Audio Technical Specifications

Signal to noise ratio

>85dB @1KHz,0dBm

Distortion

<0.05% @30Hz15000Hz,0dBm

Audio frequency response

±0.1dB @30Hz15000Hz,0dBm

Left and right channel separation

>80dB @30Hz15000Hz,0dBm

Video Technical Specifications

Band Shoulder

>50dB

MER

>45

Power Demand

Power Supply Voltage

90260VAC full range

Power Consumption

50W

Mechanical Dimensions

Transmitter

19-inch standard chassis, height 2U

Receiver

19 inches, height 1U

Cooling system

forced air cooling, three anti-treatment

Noise

<50dB

Input & Output

Audio Mono Analog AudioMPX

-15dBm+15dm600Ω, XLR interface

Audio stereo dual channel

-15dBm+15dm600Ω, XLR interface

Digital Audio AES/EBU

-39dBFS0dBFS110Ω, XLR interface

Digital Video ASI

1Vp-pBNC interface

RF input and output interface

N (Female)


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