ADTRAN DE-4E specifications FT1 DP Product Specifications

	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	135Ω
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	Operating (Standard): -40° to +70° C; Storage: -40° to +85° C
Temperature
Relative Humidity	Up to 95%, non-condensing
Part Number	1245207L2

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