HDSL4 for General Distribution Installation and Maintenance Practice Specifications61223HDSL4L2-5C 63Table 17. H4TU-C Product SpecificationsSpecification DescriptionLoop InterfaceModulation Type:Mode:Number of Pairs:Bit Rate:Baud Rate:Service Range:Loop Loss:Bridged Taps:Performance:H4TU-C Tx Pwr (Data) Level:H4TU-C Tx Pwr (Activation) Level:Input Impedance:Maximum Loop Resistance:Return Loss:16-TC PAMFull DuplexPartially OverlappedEcho Canceling21.552 Mbps261.333 kbaudRefer to the “HDSL4 Deployment Guidelines” onpage 55.Refer to the “HDSL4 Deployment Guidelines” onpage 55.Single Taps < 2 kft., Total Taps < 2.5 kft.Compliant with T1.418-2000 (HDSL4 Standard)14.1 ± 0.5 dBm (0 to 400 kHz)14.1 ± 0.5 dBm (0 to 307 kHz)135 ohmsRefer to the “HDSL4 Deployment Guidelines” onpage 55.12 dB (50 kHz to 200 kHz)Network InterfaceDSX-1 Line Build Out:DS1 Line Coding:DS1 Framing Format:0-133 feet (default)133-266 feet266-399 feet399-533 feet533-655 feetExternal (default if using a Kentrox shelf)AMI, B8ZS (default)ESF (default), SFPowerTested with the ADTRAN H4TU-R (1223426L2)Total Power:H4TU-C Power Dissipation:Span Power:Fusing:–48 VDC @ 200 mA with an H4TU-R–48 VDC @ 330 mA with H4TU-R and one H4R–48 VDC @ 560 mA with H4TU-R and two H4Rs5.1 watts with H4TU-R5.7 watts with H4TU-R and one H4R7.1 watts with H4TU-R and two H4Rs–190 VDC (Internally Generated); Class A2 com-pliant; current limited at 150 mA1.00 amp (on-board; not field-replaceable)
