... /s framed N×64kbit/s channel error testing Bit error, coding error, frame error, CRC error and E bit error testing Signal loss alarm, AIS alarm ... resistance: >1200Ω Unbalance bridging resistance: >750Ω.(10) Error code insertion: None, single, or ratio 10-1 ~ 10-7.Co-directional 64k Technical Index(1 ...