Description

HLLY TVX-50M VHF-UHF Analog tv transmitter board + Power + Antenna Package include: 1. HLLY TVX-50M tv transmitter board; 2.12V Power supply; 3. Antenna. About Shipping: SpeedPAK From China, shipping cost is $9.8, shipping time is about 10 to 14 business days! Features : • Integrated on-chip programmable UHF oscillator • No external varicaps diodes/inductor or tuned components • Extremely low external component count • Channel 21–69 UHF operation • VHF range possible by internal dividers (30–450 MHz) • Boosted TVOUT level (82 dB ì V typical) • High-speed read and write I 2 C bus compatible (800 kHz) • I 2 C address selectable by pin (four choices) using external resistor (available only in QFN20 package) • I 2 C bus 5- and 3.3-V compatible • Fixed video modulation depth (93% typical in system L and 82% typical in the other standards) • Peak white clip disabled by bus • Programmable picture/sound carrier ratio (12 and 16 dB) • Integrated on-chip programmable sound subcarrier oscillator (4.5, 5.5, 6.0 and 6.5 MHz)—no external varicaps • Programmable sound reference frequency (31.25 and 62.5 kHz) • Direct RF sound modulator input (FM and AM modulator bypassed) for NICAM or stereo sound applications (available only in QFN20 package) • On-chip video test pattern generator with sound test signal (1 kHz) • Low-power programmable modulator standby mode • Transient output inhibit during PLL lock-up at power-on • Logical output port controlled by bus • ESD protection, minimum 4 KV Attention : 1 Must connect the antenna before power on! 2 Make sure the antenna operating frequency and operating frequency to match the transmitter ， Otherwise it may affect the normal operation of the transmitter because the standing wave is too large! 3 Make sure the power supply is strong enough for the Fm transmitter!