Digital STL Audio & Video Transmission System Studio Link
The 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 standard configuration STL system equipment has a transmission distance of 60 kilometers in line of sight. The transmission system consists of STL transmitter, transmission filter, transmitting antenna & feeder cables, receiving antenna & feeder cables and STL receiver.
1. Working Frequency:100MHz～1000MHz, continuously adjustable, stepping amount 10KHz
2. Frequency stability:2ppm
3. Transmitting power:2W @ shoulder >45dB, out-of-band spurious <-80dBc
4. Modulation type:Stereo audio signal 32QAM@1M; ASI signal 15MBit/S@5M
5. Receive sensitivity:32 QAM/-78dBm @80dB S/N
6. Input/output audio signal:Analog audio signal or digital audio signal (AES/EBU)
7. Input/output video signal:ASI
8. Working temperature：-10℃~+50℃
Audio Technical
* Specifications：Signal to noise ratio>85dB @1KHz,0dBm
* Distortion：<0.05% @30Hz～15000Hz,0dBm
* Audio frequency response：±0.1dB @30Hz～15000Hz,0dBm
* Leftand right channel separation：>80dB @30Hz～15000Hz,0dBm
Video Technical Specifications
* Band Shoulder：>50dB
* MER：>45
Power Demand
* Power Supply Voltage：90～260VAC full range
* Power Consumption：50W
Mechanical Dimensions
* Transmitter：height 2U
* Receiver：19 inches, height 1U
* Cooling system：forced air cooling, three anti-treatment
* Noise：<50dB
Input & Output
* Audio Mono Analog Audio（MPX）：15dBm～+15dm，600Ω, XLR interface
* Audio stereo dual channel：-15dBm～+15dm，600Ω, XLR interface
* Digital Audio AES/EBU：-39dBFS～0dBFS，110Ω, XLR interface
* Digital Video ASI：1Vp-p，BNC interface
* RF input and output interface：N (Female)
1. The STL transmitter and the STL receiver are continuously adjustable for operating frequencies from 100 MHz to 1 GHz;
2. Select the center frequency of the output filter according to the operating frequency;
3. Select the transmit and receive antennas according to the operating frequency (the antenna working bandwidth is 20MHz);
4. Select the length of the transmit and receive cables according to the distance between the transmitter and receiver and the antenna;
5. Flexible selection of input and output audio signals based on actual needs is analog or digital.
6. The ordering description as follows:
RS RADIO 658T-1A3D/345.895
STL Transmitter (Input Signal: 1way Analog Audio + 3way Digital Audio, Central Frequency 345.895MHz)
RS RADIO 658T-2D1S/758.975
STL Receiver (Output Signal: 2way Digital Audio + 1way ASI, Central Frequency 758.875MHz)