digital headend modulator, FM TV modulator

Headend FM TV modulator JM-4G catv Features l Fix Channel 870MHz l Audio/Video dual phase-lock l Excellent SAW filter to get excellent Audio and Video Linearity l High output level, out-band restrain over 60dB l Wide-range SMPS l With T .P-30 dB Testing port l With IF Input/Output A. Specifications l RF specifications l Output freq. range 48 to 870MHz l Output freq. Accuracy ≤ 5KHz l Max. output level ≥ 115 dBμV l Spurious Output Suppression ≥ 60 dB l Picture-audio separation 6500±5 KHzPAL-D/K 6000±5 KHzPAL-I 5500±5 KHzPAL-B/G 4500±5 KHzNTSC l V/A rate 10 to 20 dB l IF Output freq. 38 MHzPAL-D/K 38.9 MHzPAL-B/G 45.75 MHzNTSC l IF output level 90 dBμV B. Video specifications l S/N rate ≥ 50 dB l Differential Phase ≤ 5 ° l Differential Gain ≤ 5% l Inside Band Flatness ≤ 2 dB l Color Brightness Delay ≤45 ns C. Audio specifications Inside Band Flatness ≤ 1.5 dB Audio S/N ≥55dB ·Power supply Input voltage AC 90-265V ±10% Power Max 6W ·Port Audio input Lotus connector Video input Lotus connector RF output FL10 RF test port FL10 IF input FL10 IF output FL10