ADTRAN HDSL2 - Manual (Page 65)

HDSL2 for General Distribution Installation and Maintenance Practice Specifications
61223HDSL2L2-5B 55
SPECIFICATIONS
Table 15 lists the product specifications for each H2TU-C included in this practice.
Table 15. H2TU-C Product Specifications
Specification Description
Loop Interface
Modulation Type:
Mode:
Number of Pairs:
Bit Rate:
Baud Rate:
Service Range:
Loop Loss:
Bridged Taps:
Performance:
H2TU-C Tx Pwr (Data) Level:
H2TU-C Tx Pwr (Activation) Level:
Input Impedance:
Maximum Loop Resistance:
Return Loss:
16-TC PAM
Full Duplex,
Partially Overlapped,
Echo Canceling
1
1.552 Mbps
517.333 kbaud
Defined by Carrier Service Area Guidelines
35 dB maximum @ 196 kHz
Single Taps < 2 kilofeet, Total Taps < 2.5 kilofeet
Compliant with T1.418-2002 (HDSL2 Standard)
16.6 ± 0.5 dBm (0 to 450 kHz)
16.3 ± 0.5 dBm (0 to 450 kHz)
135 ohms
775 ohms per span
12 dB (50 kHz to 200 kHz)
Network Interface
DSX-1 Line Build Out:
DS1 Line Coding:
DS1 Framing Format:
0-133 feet (default)
133-266 feet
266-399 feet
399-533 feet
533-655 feet
AMI, B8ZS (default)
Auto, Unframed (default)
Power
Tested with the ADTRAN H2TU-R (1223026L2)
Total Power:
H2TU-C Power Dissipation:
Span Power:
Fusing:
–48 VDC @ 160 mA with an H2TU-R module
4.0 watts with an H2TU-R module
–190 VDC (Internally Generated);
Class A2 compliant; current limited at 150 mA
1.00 amp (on-board; not field-replaceable)
Clock
Clock Sources:
Internal Clock Accuracy:
DSX-1 Derived (with HDSL2 frame bit stuffing)
± 25 ppm (exceeds Stratum 4); meets T1.101 tim-
ing requirements