brief introduction
Television modulator, also called adjacent frequency modulator or radio frequency modulator for short, modulates audio and video signals to the required frequency band. The input is audio and video signals, and the output is high-frequency signals in a specific frequency band. It is the main equipment of front-end TV rooms such as hotels, hospitals, saunas, foot baths, large restaurants, rental houses and factory dormitories. Intermediate frequency sound meter filter is used to effectively ensure the residual sideband characteristics and make it suitable for adjacent frequency transmission systems. Aitesits-ITS-T8004 TV modulator adopts passive high-selectivity single-channel filter, which effectively ensures the modulator's good parasitic output suppression performance.
classify
Modulators can be divided into digital modulators and analog modulators. ? According to different classification standards, analog modulators can be divided into: by frequency interval: adjacent frequency modulator, frequency division modulator; According to frequency: low frequency modulator, high frequency modulator; According to the adjustable frequency, it can be divided into agile frequency modulator and fixed frequency modulator; According to the number of integrated channels: single-channel modulator, four-channel modulator and multiplexer. From the current industrial application, the 4-channel T8004 adjacent frequency modulator is a product with high cost performance.
function
The main function of TV modulator is to modulate VIDEO and AUDIO signals provided by signal sources (such as digital TV set-top boxes, satellite TV receivers, telecom IPTV set-top boxes, DVD or VCD players, computers, surveillance cameras, TV demodulators, etc.). ) into a stable high-frequency RF oscillation signal. Video is amplitude modulated and audio is frequency modulated. 1.ATES T8004 adjacent frequency modulator adopts four-channel modulation integration design, which saves space and is convenient for installation and debugging. 2. Strong output signal, long transmission distance, optimized output image and clearer picture. 3. Adopt intermediate frequency acoustic surface filtering and standard residual sideband characteristics.
price
The market price of Dichuang dc- 100 is 1 1.50 yuan; The market price of Dichuang DC- 100AV-RF stereo modulator is 14.90 yuan; The market price of digital analog cable TV spot program AV to RF adjacent frequency modulator in Bandung C68 Hotel is 253.44 yuan; Market price of multi-channel and 20-channel integrated CATV modulator 1800 yuan; Market price of multi-channel 4-channel modulator in front-end of hotel cable TV is 2 10 yuan.
That's what Bian Xiao introduced to you today about TV modulators. The most important thing is to introduce its price, because for our consumers, the price of goods is always one of our most concerned issues. The above mainly lists the prices of several different TV modulators, hoping to give you some reference, but as we all know, because the market price of goods changes rapidly, we still have to take the actual price in the local market as the basis for buying.
Tubatu Online provides you with "every decoration quotation, 1-4 local decoration companies, 3 sets of decoration design schemes" and the decoration pit avoidance strategy for free! Click this link:/Zhu Ye /zxbj-cszy.php? to8to _ from = SEO _ zhidao _ m _ jiare & amp； Wb, you can get it for free ~