FPV アナログビデオトランスミッター CVBS オーディオビデオモジュール送信機 400-900MHz UHF vcan1904
目次
概要
This module belongs to UHF Radio communication equipment in the frequency band, which can transmit audio and video within a limited range. Designed for low power consumption, integrated VCO, PLL, and AM broadband video demodulation, The audio carrier frequency makes the module smaller; it adopts a small single-board package, which is convenient for users to miniaturize applications.
The application of this module only needs to simply connect the power supply, audio cable, and video cable, and connect the antenna to use a variety of electronic equipment terminals that support analog TV reception, including mobile phones, TVs, ラップトップ, MP4, and digital photos.
7GHz FPVVRX受信機
7GHz FPV VTX トランスミッター
特徴
- UHF AM broadband emission
- 小型: 17*16.5*4.5ミリ
- Wide voltage operation: 3.3-4.2V
- 低消費電力:3.3V 180mA
- 高出力電力:17dBmの
- Built-in frequency phase-locked loop high stability
- Direct modulation of audio and video signals
- Eight channels can be called flexible
- Chipset ASE373C
応用
- Analog tv handset
- VCD/DVD/DVB オーディオ/Video wireless transmission;
- Baby monitoring;
- Real-time on-site image monitoring;
- Security transmission system;
- PSP game turns the テレビ
- Wireless visual reversing
ピン定義
| ピン | Pin Name | I/O | illustrate |
| 1 | VCC_IN | 入力 | 3.3V power input |
| 2 | GND | 入力 | power ground |
| 3 | VIDEO_IN | 入力 | ビデオ入力, the input impedance is 75 オーム |
| 4 | AUDIO_in | 入力 | 音声入力 |
| 5 | CH1 | 入力 | Channel selection input |
| 6 | CH2 | 入力 | Channel selection input |
| 7 | CH3 | 入力 | Channel selection input |
| 8 | の上 | 入力 | antenna |
The long black cable is the transmitter antenna. 4 ピン, Red cable is power Input, Black cable is GND, Yellow cable is video input and White cable is audio input.
Application Circuit
Frequency selection table:
| 周波数 | CH1 CH2 CH3 ピン | 接続する |
| 775.25 | 0 0 0 | CH1; CH2；CH3 GND |
| 759.25 | 0 0 1 | CH3 GND,CH1；CH2 null |
| 743.25 | 0 1 0 | CH2 GND,CH1；CH3 null |
| 727.25 | 0 1 1 | CH2；CH3 GND,CH1 null |
| 711.25 | 1 0 0 | CH1 GND,CH2；CH3 null |
| 695.25 | 1 0 1 | CH1；CH3 GND,CH2 null |
| 679.25 | 1 1 0 | CH1; CH2 GND,CH3 null |
| 663.25 | 1 1 1 | CH1; CH2；CH3 null |
Specification
| 絶対最大定格 (Exceeding the maximum ratings may cause permanent damage to internal devices) | ||||||
| パラメータ | symbol | working conditions | minimum value | 代表値 | maximum value | ユニット |
| supply voltage | VCC | -0.5 | 4.2 | で | ||
| 入力電圧 | 私たちは | -0.5 | VCC+0.5 | で | ||
| The output voltage | Vo | When the load condition is met | GND | VCC-0.5 | で | |
| 保管温度 | Tstg | Refers only to the module itself, without packaging | -20 | 60 | ℃ | |
| 湿度 | 10% | 50% | 85% | |||
| Recommended working conditions (If the recommended working conditions are not met, the specified electrical performance indicators may not be achieved) | ||||||
| パラメータ | symbol | working conditions | minimum value | 代表値 | maximum value | ユニット |
| supply voltage | VCC | 3.3 | 3.3. | 4.2 | で | |
| Power supply ripple voltage | Vlp | 10 | 25 | mVpp | ||
| 入力電圧 | 私たちは | GND | – | VCC | で | |
| 動作温度 | Facing | Only refers to the module itself, excluding other parts | -20 | 27 | 60 | ℃ |
| Electrical Characteristics (VCC=5.0V, Ta=25°C) | ||||||
| パラメータ | symbol | working conditions | minimum value | 代表値 | maximum value | ユニット |
| supply current | Icc | Vcc=5.0V | 160 | 180 | 200 | ミリアンペア |
| 無線周波数 | ||||||
| 出力電力 | RFo | 50Ω system | 16 | 17 | 18 | dBmの |
| 出力インピーダンス | — | 50 | — | Oh | ||
| Transmit channel frequency | CH1 | — | 775.25 | — | メガヘルツ | |
| CH2 | — | 759.25 | — | メガヘルツ | ||
| CH3 | — | 743.25 | — | メガヘルツ | ||
| CH4 | — | 727.25 | — | メガヘルツ | ||
| CH5 | — | 711.25 | — | メガヘルツ | ||
| CH6 | — | 695.25 | — | メガヘルツ | ||
| CH7 | — | 679.25 | — | メガヘルツ | ||
| CH8 | — | 663.25 | — | メガヘルツ | ||
| frequency stability | Fstb | -100 | +100 | ppm | ||
| ビデオ | ||||||
| Video input impedance | Rvin | 75おお | Oh | |||
| Video input level | come on | negative polarity,75おおload | 0.9 | 1 | 1.25 | Vpp |
| 周波数応答 | Fbdv | 50Hz ~ 6MHz | -5 | +5 | dB | |
| SNR | S/N | 38 | dB | |||
よくある質問
Q1: Can you make this UHF wireless video transmitter with a 10-watt amplifier?
第2四半期: Have you got a working 144.500 144.750 vhf model like this for ham?
A2:
新モデル
周波数: 440~880Mhz optional, 20M step.
チャネル: チャネル 8
力: 2W, 4W
電源: 12ワシントンDCで
現在: 2W@900mA, 1.2A@4W
Launch size: 66*45*15ミリ
Launch weight: 50グラム
Analogue Receiver Board
