Descripción
Product Parameter
Features:
1. Eight channels of audio and video input, one RF output with eight channels.
2. It adopts high frequency modulation and one-time frequency conversion processing, with little out-of-band interference.
3. Both sound and image carrier adopt MCU phase lock technology, with high frequency stability and accuracy.
4. All functional circuits of the whole machine adopt sheet technology, and the whole machine has high reliability.
5. LED display channel. Press the MUNE key to select one of the eight channels, there are eight indicators on the front panel
Indicate which channel you have selected; press the UP or DOMN key to set the output channel of the selected channel.
6. Convenient operation, volume and video modulation can be adjusted on the front panel.
7. The power supply adopts switching power supply with high reliability and high dynamic range.
8. Different systems can be customized according to customer requirements.
Technical Parameters:
A. RF performance:
1. The output frequency range 47MHz, 470 MHz or 470-860MHz is optional
2. Frequency accuracy 5kHz
3. Output level 85db
4. Out-of-band suppression 60dBc max
5. Output impedance 75
6. Output reflection 12dB min any channel
7. Sound-image carrier ratio 18±2dB
B. Video performance:
1. Input level 0.6 1.5Vp-p
2. Video input impedance 75
3. Video input reflection 30dB min
4. K factor 4 max (2T pulse)
5. SNR (weighted) 60dB
6. Delay 40nsec
7. In-band flatness 1dB
8. Differential gain 4 (modulation degree is 87.5)
9. Differential phase 4 (modulation degree is 87.5)
C. Audio:
1. Input level -10 10 dBm
2. Input impedance 10K min
3. In-band flatness 1dB max (40Hz 15kHz)
4. Distortion 1
5. S/N ratio -60dB
6. The distance between image and sound is determined according to the standard
D. power supply:
1. Input AC voltage 100260V
2. Power consumption 15W max
Key operation instructions
(1) Indicator light: used to display the current operating channel number.
(2) LED display: used to display the working channel of the current channel number.
(3) Buttons: the MUNE button is used to select the current channel number; each press of the UP button can increase the working channel of the current channel by one channel; each press of the DOWN button can decrease the current working channel by one channel.
(4) Knob: used to adjust the video and audio modulation of each channel.
About us
Since its inception, the company has always focused on digital television, professional audiovisual, and other professional audio and video signal processing software and hardware equipment and system integration research and development, manufacturing and sales. Through long-term, sustained R & D investment and independent innovation, relying on digital signal processing technology, analog signal processing technology and digital-analog hybrid processing technology, the company has gradually developed a digital TV (front-end equipment and wireless transmission equipment), professional audiovisual, application products, '3 + N' business layout, products covering encoding and transcoding, multiplexing, modulation, coding and modulation, coding and video signal processing software and hardware integration equipment and system integration. The products cover more than ten kinds of product series and hundreds of product models such as coding and transcoding, multiplexing, modulation, coding and modulation, multiplexing and modulation, demodulation and scrambling decoding, terrestrial digital TV broadcasting transmitter, stereo FM broadcasting transmitter, solid-state power source, low-level RF front-end, IPTV management software, intelligent release terminal series, etc., and the business system of multilevel products and system integration, which has become the minority of the domestic products with complete product line layout, We have become one of the few enterprises in China that have a complete product line layout and mastered the mainstream digital TV transmission standards.
We have been adhering to the concept of 'independent research and development, dare to be the first, and continuous innovation', and cultivated a R & D team with high executive force and high innovation, in this team full of vitality, the vast majority of the members graduated from domestic and foreign universities in communications, software, electronics and other key national disciplines, the company has built up a senior, middle-
