... requirement±50PPM(2) Signal coding: HDB3, AMI.(3) Input jitter tolerance: Up to the requirement of ... 2) Unbalance bridging: >750Ω,Balance bridging: >1200Ω(5.3) Unbalance monitoring: 75Ω, 26dB gain,Balance monitoring: 120Ω, ... single, or ratio 10-1 ~ 10-7.(3) Receiver(3.1) SYNCH modeClock source: Internal or external clockPhase ... cable1 pc15Handy-case1 pc16Serial printing lineoptional1 pc E1 BER Tester