Set up is Simple and convenient,no need to renovation the classroom, lines are easy to install and arranged, low carbon and Eco.
2
The displayer may install and fixed on the desk, to avoid students move the displayer here and there so you won’t take time to arrange the displayers.
3
Students' digital language terminals are all installed on the desk, there will be a box on the desk to arrange the circuit to pretect the lines and students could not touch the circuit which will be very safe,also loooks very tidy.
4
Headphone is designed with crystal interface, easy to modify and no need to change the headphone,the line is soft and durable,easy to connect and maintain, the tone is very clear.
5
Desk design is Safe and simple,We can produce the desk as customers requests, and our design will make the installing lines are mostly hide in the desk with a box, so the students couldn’t tough the line or be hurt from the lines.
6
Lines, as our design are adopt with USB 2.0 interface, so our machines just need several data line with USB 2.0 interface, don’t need you to set video line, sound line, network line or other such lines, too many lines will be very complex to set up and manage,
7
The system support difference languages, and the English system is more popular.
8
Heat dissipation is low, adopt aluminium sheet to radiating, low heat without noisy, much better than radiator.
Functions
Teaching function
Digital audio broadcasting
Video broadcast
Screen broadcast
Screen monitor
Online cinema
Voice talk back
Group discussion
Electronic whiteboard
Job Submission
Electronic responder
Digital courseware
Electronic hands
Self-learning function
Audio on demand
Text on demand
IP phone
Electronic dictionary
Change speed without tune changed play
Voice and text synchronous playback
Read and following the record
Automatic leading read in both Chinese and English
Simultaneous translation
Learning exchange
Test function
Independent exam and evaluation
Digital exam mode and test paper sending
Students' answer
Production of examination paper
Management function
Remote control
Black screen silence
Lock teacher’s computer
System settings
Student’s headphone automatically detection
Remote mandatory management
Support network
Network control
monitor
Electronic attendance
Personalized teaching settings
Equipment technical parameter table
Category
Main technical parameters
System reliability
Mean time between failures: Master device controller/student units,10000 hours, system halted and lost connection≤1;
Terminal starting success one time rate is 100%;
Working condition:-10-45°C;relative humidity 20%-80%;barometric pressure 86-106Kpa;Power system alternating voltage is 220V±22V;mains frequency:50±2.5Hz.
The digital audio switch
128 pcs 44.1Khz/16bit audio data transmission at the same time
Electrical connection: standard power is 220V±22V,output voltage is 9V,intelligent switch, all the power of student terminal are supplied by the audio hosted exchange.
SNR ( Signal to Noise Ratio )>80dB,Distortion rate <1%.
Four-in-one network output interface(including power supply,data switch,communication control HD VGA signal).
Digital student terminal
Stepless speed-change without tonal modification range:50%-+200%.
SNR ( Signal to Noise Ratio )>80dB
Frequency response:125Hz-10.0kHz(±2dB), more than 16 bit linear sampling.
Recording session ≥600 minutes;
Directly drive VGA color LCD screen displayer.
Four-in-one network interface(including power, data switch,communication control HD VGA signal),VGA signal output interface(optional)
Headphone with microphone
(2-channel stereo)
Headphone:
a)Frequency response: 125Hz~8000 Hz, ±17 dB(0dB=20uPa)(input power =1mW)
b)Impedance:32Ω±20%;
c) Characteristics of sound pressure level(sensitivity):≥100dB/1mW (0dB=20uPa).
Microphone:
a)Frequency response.
b)Type: electret microphone;
c)Free field sensitivity:-47±2 dB(0 dB=1V/Pa);
d)Directional type; bidirectional.
Sound delay
Broadcast≤1ms;
Talkback≤1ms;
Breakdown time: no
Network
Adopt the multi-channel digital audio real-time packet transmission protocol.
Four-in-one network pattern, audio switch supply power, transmit data, transmit HD VGA signal to student terminal at the same time. through a standard HSYV.
Packaging & Shipping
PE bag with export caton, or customized.
7 days normally,after 30% deposit
Our Services
Supply remote control and installation services
When you contact with me you will get high quality services
Company Information
With 10 years endeavor in this field make Greelan already ahead of the industry at least 3 years.
Greelan is a company pay much attention to charity, Greelan often donate money to some poor school
or poor area regularly, and got the honor of “Love enterprise”,with us, your money in safe, your business in safe.
Greelan digital language lab, you deserve it digital language education equipment
