RF Modulator Plug and Play HD Multimedia Interface Input NTSC PAL Output VHF AV Demodulator for CATV System                          Feature:     1. Professional RF modulator, which can effectively adapt to your local CATV system, with stable performance and better signal.      2. The modulator adopts VHF operating frequency controlled by PLL, HD Multimedia Interface input, AV output, RF output.      3.   High definition RF modulator, support NTSC and PAL TV format output, the image is clear, to meet your different needs.      4. No need to install drivers, flexible, plug and play, compact and portable RF modulator, easy to use at any time.       5. This modulator is not only suitable for your TV, but can also be connected to computers, laptops, game consoles, AV equipment, etc.             Specification:             Item Type: RF Modulator  Material: Plastic  TV Standard Format: Compatible with PAL, NTSC at the Same Time  Frequency Range: PAL: 55.25MHz/62.25MHz; NTSC: 61.25MHz/67.25MHz  Output Level:     80±5dBuV      Input Level: 0.77Vp-P for 80%+/-10% Modulation  Sound System: M = 4.5MHz, B = 5.5MHz  Video Input Impedance: 75 Ohms / 1KOhms (Switch Cable)  Sound Input Impedance: 13 ± 3k Ohms  Input Port: HD Multimedia Interface  Output Port: RCA Female  RF Input: F Female  RF Output: F Female  Input Resolution: 1080P, 1080i, 720P, 576P, 576i, 480p  HD Multimedia Interface Version: 1.3  HDCP Version: 1.3  Power Consumption: 500mA (min) / 5V DC  Working Temperature: 0℃～+40℃                    Package List:     1 x RF Modulator           1 x Transmission Cable      1 x Card Manual                           How to use:       Please click the graphic to connect and follow the steps           Step 1: Connect 5V 1A power adapter with USB output;           Step 2: The channel is set to CH3 or CH4, the modulator switch is set to on (set to OFF, the RF part does not work);           Step 3: Connect RF in and RF OUT;           Step 4: Power on the HD Multimedia Interface device and connect the HD Multimedia Interface input signal;           Step 5: Turn on the TV to CH3 or CH4.           Please follow the above steps strictly