Nortel Optical Multiservice Edge 6130, Planning Manual, Page: 135 / 292

Technical specifications 7-33
Planning Guide NT6Q92MA Rel 1.0 Iss 1 Standard September 2006
Electrical specifications
Table 7-29 to Table 7-33 lists the electrical specifications for the E1, E3, DS3,
DS1, and STM-1e interfaces.
Table 7-29
E1 electrical specifications
Parameter Value
Line rate 2048 kbit/s +/- 50 ppm
Line code HDB3
Framing application CRC4
Impedance 75 ohm or 120 ohm (see Note )
Output voltage (nominal) 75 ohm: 2.37 V (mark), 0 ± 0.237 V (space)
120 ohm: 3.00 V (mark), 0 ± 0.300 V (space)
Minimum output return loss 6 dB (51 kHz to 102 kHz), 8 dB (102 kHz to 3072 kHz)
Cable loss to input 0 dB to 6 dB at 1024 kHz
Minimum input return loss 12 dB (51 kHz to 102 kHz), 18 dB (102 kHz to
2048 kHz), 14 dB (2048 kHz to 3072 kHz)
Note: A termination panel must be used for 75 ohm E1 applications.
Table 7-30
E3 electrical specifications
Parameter Value
Line rate 34368 kbit/s +/- 20 ppm
Line code HDB3
Framing application G.832
Impedance 75 ohm
Output voltage (nominal) 75 ohm: 1.0 V (mark), 0 ± 0.1 V (space)
Cable loss to input 0 dB to 12 dB at 17184 kHz
Minimum input return loss 12 dB (860 kHz to 1720 kHz), 18 dB (1720 kHz to
34368 kHz), 14 dB (34368 kHz to 51550 kHz)
Table 7-31
DS1 electrical specifications
Parameter Value
Line rate 1544 kbit/s +/- 50 ppm
Line code B8ZS
Framing application Extended Super Frame (ESF)
Impedance 100 ohm ± 5%