Appendix A - Specifications

LTPH-UM-1109-01, Issue 1

 

 

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 Vpk-pkpre-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

 

54

January 9, 2002

H2TU-C-231 List 2