Optimum Pre-Emphasis and De-Emphasis Networks for Transmission of Television by PCM Abstract: The advantages attendant to the use of pre-emphasis and de-emphasis networks in a PCM television system are examined. pre emphasis:-boosting the higher frequencies before transmission at the transmiter side is knowns as pre emphasis De emphasis:-Reducing the certain frequency in the recevier side is known as de emphasis The ASNT6119-KMF from ADSANTEC is an up to 32.5Gb/s transmitting amplifier featuring 4-tap digital pre-emphasis / de-emphasis. The 4-taps, spaced at T/2 where T is the width of the highest De emphasis is the inverse process of preemphasis, used to attenuate the high frequency signal that is boosted at the transmitter section. The deemphasis network at the receiver section restores the original amplitude Vs frequency characteristics of the information signal, after the demodulation process. PRE-EMPHASIS & DE-EMPHASIS TRAINER Pre-emphasis network; De-emphasis network; Required numbers of patch cords and operating manual. (The CD pre-emphasis is defined by two time constants: 50?S and 15?S). For these reasons, Stereo Lab includes a very accurate implementation of the CD de-emphasis filter which may be used to correct music files with pre-emphasis applied. ANALOG & DIGITAL COMMUNICATIONS LABORATORY LIST OF EXPERIMENTS Part A (Analog Communication Lab): 1. Amplitude Modulation and Demodulation. 2. Frequency Modulation and Demodulation. 3. Characteristics of Mixer. 4. Pre-Emphasis & De-Emphasis. 5. Pulse Amplitude Modulation and Demodulation. 6. Pulse Width Modulation and Demodulation. 7. Matlab Program For Pre-Emphasis. 1/23/2017 0 Comments engineering college tirunelveli department of electronics and communication engineering ec2307- communication systems lab. A time constant of 75. The combined effect of pre- emphasis and de- emphasis is to increase the high- frequency PSPICE LAB MANUAL ECE-BEC 1 PSPICE LAB MANUAL LAB CODE:EC 262