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Appendix A - Specifications LTPH-UM-1109-01, Issue 1
54 January 9, 2002 H2TU-C-231 List 2
APPENDIX A-SPECIFICATIONS
Power
HDSL2 Span Voltage 0 or -180 Vdc ±5 Vdc
CO Supply -48 Vdc nominal (-42.5 to -56.5 Vdc)
(See “Power Consumption”, “Maximum Power Dissipation”, and “Maximum Current
Drain” on page 55.)
Electrical Protection Secondary surge and power cross-protection on HDSL2 ports. Requires external
primary protection.
Fusing Internal, connected to fuse alarm output on pin 32
Environmental
Operating Temperature -40°F to +149°F (-40°C to +65°C)
Operating Humidity 5% to 95% (non-condensing)
Physical
Height 5.9 in. (15.0 cm)
Width 1.4 in. (3.5 cm)
Depth 10.0 in. (25.4 cm)
Weight 8.0 oz. (0.23 kg)
Mounting 220 mechanics high-density shelf
HDSL2
Line Rate 1.552 Mbps Overlapped Pulse Amplitude Modulation Transmission with Interlocking
Spectra (OPTIS)
Transmission Full duplex
Media One non-loaded, copper, two-wire cable pair
Output +16.8 dBm ±0.5 dBm at 135Ω (0-450 kHz) at CO side;
+16.5 dBm ±0.5 dBm at 135Ω (0-350 kHz) at remote side
Line Impedance 135Ω
Maximum Loop Attenuation 35 dB at 196 kHz, 135Ω
Start-up Time 30 sec. (typical), 1 min. (maximum)
DSX-1
Line Impedance 100Ω
Line Rate 1.544 Mbps ±200 bps
Line Format Alternate Mark Inversion (AMI) or Bipolar with 8-Zero Substitution (B8ZS)
Frame Format Extended SuperFrame (ESF), SuperFrame (SF), or Unframed (UNFR)
Pulse Output 6 V
pk-pk
pre-equalized for 0 to 655 feet of ABAM cable
Input Level +1.5 to -7.5 dB DSX
System
One-way DS1 Delay <400 µs
Wander (Looped) Meets MTIE T1.101 requirements
Wideband Jitter (Looped) 0.2 UI maximum
Narrowband Jitter (Looped) 0.1 UI maximum