... , Data storage, PC supported E1 tester 2M Transmission Analyzer Always in stock!Specifications ItemDescription2MInternal Clock2048kb/s ± 10ppmFrequency Deviation±999ppmLine Interface75Ω (Unbalanced), 120 ... Impedance >2KWLine CodeHDB3, AMIFramingUnframed, PCM30, PCM30CRC, PCM31, PCM31CRCReceive Sensitivity> -43dB Tx Clock SourceInternal, Interface and External 2MHz clock or signal Pulse ...