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Section 61245207L2-5, Issue 2
61245207L2-5C
Table 8. FT1 DP Product Specifications
Loop Interface
Modulation Type ............................... 2B1Q
Mode ................................................. Full Duplex, Echo Cancelling
Number of Pairs ................................ One
Bit Rate ............................................. 784 kbps
Baud Rate .......................................... 392K baud
Service Range ................................... Defined by Carrier Service Area Guidelines
Loop Loss .......................................... 36 dB maximum @ 200 kHz
Bridged Taps ..................................... Single taps < 2 kft, total taps < 2.5 kft
Performance ...................................... Compliant with Bellcore TA-NWT-001210
Return Loss ....................................... 20 dB (40 kHz to 200 kHz)
DSL Tx Signal Level ........................ 13.5 dBm
Input Impedance ............................... 135
Ω
Return Loss ....................................... 20 dB (40 kHz to 200 kHz)
DS1 Facility Interface
Fully compatible with Nortel DE-4E shelf
Power
Tested 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 Repeaters
FT1 DP Power Dissipation ............... 3.7 watts with FNID
5.2 watts with FNID and FT1 Repeater
6.1 watts with Local Power FNID and two FT1 Repeaters
Span Power ....................................... 137 V or -190 VDC (nominal)
Fusing 1.00 A (not field-replaceable)
Clock Sources
Clock Sources ................................... Internal, DS1 Derived
Internal Clock Accuracy ...................
±
25 ppm, (exceeds Stratum 4). Meets T1.101 timing requirements.
Tests
Diagnostics ........................................ Self-Test, Local Loopback (FT1 DP), Remote Loopback (FNID)
Mechanical
Dimensions ....................................... 6.2" High, 1.1" Wide, 10.2" Deep, 16 ounces, nominal
Plugs into Nortel DE-4E (or equivalent) shelf
Environment
Temperature ...................................... Operating (Standard): -40
°
to +70
°
C; Storage: -40
°
to +85
°
C
Relative Humidity ............................. Up to 95%, non-condensing
Part Number .......................................
1245207L2
