15Section 61245207L2-5, Issue 261245207L2-5CTable 8. FT1 DP Product SpecificationsLoop InterfaceModulation Type ............................... 2B1QMode ................................................. Full Duplex, Echo CancellingNumber of Pairs ................................ OneBit Rate ............................................. 784 kbpsBaud Rate .......................................... 392K baudService Range ................................... Defined by Carrier Service Area GuidelinesLoop Loss .......................................... 36 dB maximum @ 200 kHzBridged Taps ..................................... Single taps < 2 kft, total taps < 2.5 kftPerformance ...................................... Compliant with Bellcore TA-NWT-001210Return Loss ....................................... 20 dB (40 kHz to 200 kHz)DSL Tx Signal Level ........................ 13.5 dBmInput Impedance ............................... 135ΩReturn Loss ....................................... 20 dB (40 kHz to 200 kHz)DS1 Facility InterfaceFully compatible with Nortel DE-4E shelfPowerTested with the ADTRAN FT1 Repeater (P/N 1245211L1) and the ADTRAN FNID (P/N 1245201L1)Total Power ....................................... -48 VDC @ 125 mA with FNID-48 VDC @ 215 mA with FNID and FT1 Repeater-48 VDC @ 300 mA with Local Power FNID and two FT1 RepeatersFT1 DP Power Dissipation ............... 3.7 watts with FNID5.2 watts with FNID and FT1 Repeater6.1 watts with Local Power FNID and two FT1 RepeatersSpan Power ....................................... 137 V or -190 VDC (nominal)Fusing 1.00 A (not field-replaceable)Clock SourcesClock Sources ................................... Internal, DS1 DerivedInternal Clock Accuracy ................... ± 25 ppm, (exceeds Stratum 4). Meets T1.101 timing requirements.TestsDiagnostics ........................................ Self-Test, Local Loopback (FT1 DP), Remote Loopback (FNID)MechanicalDimensions ....................................... 6.2" High, 1.1" Wide, 10.2" Deep, 16 ounces, nominalPlugs into Nortel DE-4E (or equivalent) shelfEnvironmentTemperature ...................................... Operating (Standard): -40° to +70°C; Storage: -40° to +85°CRelative Humidity ............................. Up to 95%, non-condensingPart Number .......................................1245207L2