Perekayasaan Sistem Radio dan Televisi(1)

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PEREKAYASAAN SISTEM RADIO dan TELEVISI 0,3333 V 0,6666 V 0,9999 V 1,3333 V 1,6666 V 1,9999 V 2,3333 V 2,6666 V 2,9999 V 3,3333 V 3,6666 V 3,9999 V 4,3333 V 4.6666 V 5,0000 V 0 0 0 1 0 0 1 0 0 0 1 1 0 1 0 0 0 1 0 1 0 1 1 0 0 1 1 1 1 0 0 0 1 0 0 1 1 0 1 0 1 0 1 1 1 1 0 0 1 1 0 1 1 1 1 0 1 1 1 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 184
PEREKAYASAAN SISTEM RADIO dan TELEVISI Gambar 10.9. Kuantisasi Analog to Digital Converter Gambar 10.10 di bawah adalah sebuah rangkaian analog to digital converter yang menerima sinyal masukan berupa pulsa amplitudo dari PAM. Dalam contoh ini sumber sinyal audio ada dua yaitu sinyal-sinyal yang diumpankan ke CH1 dan CH2. Gambar.10.10 Analog to Digital Converter 2 kanal Setiap pulsa dari pulse amplitudo modulation dalam bentuk diskret diterjemahkan oleh Analog to Digital Converter menjadi pulsa biner. Data keluaran dari ADC sebanyak 8 bit, yang berarti mempunyai interval : u u.ref (4.5) 2 n 1 Maka interval tegangan per tahap adalah: u.ref u n 2 1 5v 0,0196v 8 2 1 185
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Perekayasaan Sistem Radio dan Televisi(1)

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