MA05 Series 2Mbit/s Digital Stereo Broadcast Transmission Equipment

Key words

Broadcasting Equipment

With the update of broadcast system, we now use completely digital, big-capacity, highly-reliable, highly-secure digital stereo broadcast equipment to transmit the sound, we develop and produce MA05 series 2Mbit/s digital stereo Broadcast transmission equipment to satisfy the demand of modern broadcasting. This series mainly includes: MA05 digital stereo Broadcast transmission equipment, MA05A digital stereo broadcast receiver,MA05B small-capacity digital stereo Broadcast transmission equipment. MA05 series digital stereo broadcast transmission equipment builds digital stereo broadcast transmission system network via wide and reliable E1 transmission system network, realizing big-capacity, highly-reliable, highly-secure broadcast transmission with strong management capability, eliminating unfriendly interference powerfully. Iit is the accessory transmission equipment for the broadcasting or audio transmission system of broadcasting stations or the highway, etc..

Equipment features

in compliance with standards: encodes or decodes analogue or digital audio per MPEG Layer Ⅱ standards, it features multiplexing/dividing. At E1 interface, it is in compliance with ITU-T G.703standards. digital interface is in compliance with AES/EBU standard.Big transmission capacity: Each 2Mbit/s transmission code flow has Maximum downlink transmission or uplink transfer, the total is 15-line single sound track or 7-line stereo broadcast program.Advanced technology: It adopts advanced MPEG audio compressing technology and DSP technology, FPGA technology; complete modular design, the equipment features anti-interference, reliable.Flexible networking: it can be connected to optical transmission network (SDH,PDH),digital microwave transmission network, satellite transmission network, etc..High security: we have independent intellectual property rights, can have different encryption in the data flow according to the user’s requirements.Multi-interface: encoding equipment not only emulates audio interface, but also has optional AES/EBU digital interface, it can be connected to audio digital equipment at the sampling frequency of 32KHz,44.1 KHz,48 KHz, etc..Ring detection: It has the function of ring detection to facilitate distinguishing responsibilities, remove faults for convenient maintenance. (except for 1U equipment)

Item name	MA05(5U)	MA05A(1U)
Sampling frequency	48KHz	48KHz
Quantity ratio	16bits/sample	16bits/sample
Band frequency response	20-20000Hz±0.4dB	20-20000Hz±1dB
harmonious wave distortion	0.3%, whole band test	0.6%(1KHz,+20 dBm test) <1%( whole band test)
Not weighted Signal/noise ratio without	>70dB	>70dB
Right/left sound track level difference	<0.3dB	<0.5dB
Right/left sound track phase difference	<2°	<5°
Max input level	+ 6dBm
Max output level	+ 20dBm	+ 20dBm(when +6 dBm input)
Input resistance	600Ωbalance
Output resistance	<60Ωbalance	<60Ωbalance
Digital interface	in compliance with AES/EBU standard
power supply:	220V±10%,50Hz
power consumption(standard unit)	60W	15W
Applications environment:	Working temperature:+5°C~ +40°C,humidity:10%~90%
dimension	482.6mm×342.9mm×222mm	482.6mm×342.9mm×44.5mm

Equipment power supply

DC ±24V,-48V;AC220V, power consumption less than 5W

Applications environment

Working temperature -45°C~+85°C;relative humidity<95%