Pam, Ppm, Pwm Modulation And Demodulation Trainer is an SSI India product in the Communication Trainer category. Key specifications include SKU: PCT-E334A. Analog waveform : Sine wave of Frequencies of output of 250Hz, 500Hz, 1 KHz, and 2 KHz. Wtih Adjustable Amplitude of 0-‐4Vp-‐p. Sampling Frequencies : 4,8,16,32 Khz. Fixed