... YDN-EM2202C is a low bit rate encoding, DVB-C modulation integrated device to convert four channels A/V signals ... audio *4Sample rate48KHzBit rate64kbps, 96kbps,128kbps, 192kbps, 256kbps, 320kbpsDVB-C modulator sectionStandardJ.83A , J.83B, J.83CMER≥42dBRF frequency30~960MHz ... , 1KHz stepRF output level-30~ -10dbm(81~97 dbµV), 0.1db stepJ.83AConstellation16/32/64/128 ...