ADTRAN HDSL2 - Manual (Page 67)

HDSL2 for General Distribution Installation and Maintenance Practice Specifications
61223HDSL2L2-5B 57
Table 16 lists the product specifications for each H2TU-R included in this practice.
Table 16. H2TU-R 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
Refer to the
“HDSL2 Deployment Guidelines”
section.
Single Taps < 2 kilofeet, Total Taps < 2.5 kilofeet
Compliant with T1.418-2002 (HDSL2 Standard)
16.8 ± 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
DS1 Output Level:
DS1 Signal Input Level:
DS1 Line Coding:
DS1 Framing Format:
0 dB, –7.5 dB, –15 dB
0 to –22.5 dB
AMI, B8ZS (default)
SF, ESF (default), Auto, Unframed
Power
Tested with the ADTRAN H2TU-C (1223001L2)
1223024L2 Local Power:
1223026L2 Span Power:
H2TU-R Maximum Heat Dissipation:
Fusing:
–24 to –48 VDC
Powered by an H2TU-C module at –190 VDC;
Class A2 compliant; current limited at 150 mA
3.0 watts
1.00 amp (on-board; not field-replaceable)
Clock
Clock Sources:
Internal Clock Accuracy:
HDSL2 loop derived
± 25 ppm (exceeds Stratum 4); meets T1.101 tim-
ing requirements