Table 10. Ddm+ H2Tu-C Specifications - ADTRAN DDM+ H2TU-C Installation And Maintenance Manual

Loop Interface
Modulation Type ...................................................... 16-TC PAM
Mode ......................................................................... Full Duplex, Partially Overlapped, Echo Cancelling
Number of Pairs ........................................................ One
Line Rate ................................................................... 1.552 mbps
Baud Rate ................................................................. 517.333 K baud
Service Range ........................................................... Defined by Carrier Service Area Guidelines
Loop Loss ................................................................. 35 dB maximum @ 196 kHz
Bridged Taps ............................................................ Single Taps < 2000 feet, Total Taps < 2500 feet
Performance .............................................................. Compliant with ANSI T1.418-2000 (HDSL2 Standard)
H2TU-C Transmit Power (Data) Level ................... 16.6 ±0.5 dBm (0 to 450 kHz)
H2TU-C Transmit Power (Activation) Level .......... 16.3 ±0.5 dBm (0 to 350 kHz)
Input Impedance ....................................................... 135 Ω
Maximum Loop Resistance ...................................... 900 Ω per span
Return Loss ............................................................... 12 dB (50 kHz to 200 kHz)
Network Interface
DSX-1 Output Level ................................................ 0 dB
DSX-1 Line Build Out ............................................. 0-133 feet ABAM
DSX-1 Line Code ..................................................... AMI, B8ZS
DSX-1 Format .......................................................... Auto, SF, ESF, Unframed, FFFC (see footnote 1 on page 6)
Power
Tested with the ADTRAN H2R (P/N 1222045L1) and the ADTRAN H2TU-R (1222026L1).
Total Power .............................................................. -48 VDC @ 160 mA with H2TU-R
HTU-C Power Dissipation ....................................... 4.0 watts with H2TU-R
Span Power ............................................................... -190 VDC (Internally Generated) current limited at 150 mA
Fusing ....................................................................... 1.00 A (not field replaceable)
Clock
Clock Sources ........................................................... Internal, DSX-1 Derived (with HDSL2 frame bit stuffing)
Internal Clock Accuracy .......................................... ± 25 ppm (exceeds Stratum 4). Meets T1.101 timing requirements.
Tests
Diagnostics ............................................................... Self-Test, Local Loopback (H2TU-C), Remote Loopback (H2TU-R)
Physical
23 in. DDM+ Extension Shelf-Mounted
Dimensions ............................................................... 3.5 in. High x 5/8 in. Wide x 10.25 in. Deep
Weight ....................................................................... Approximately 5oz.
Environment
Temperature .............................................................. Operating (Standard) ...... -40° C to +70° C
Compliance
UL Listed
Bellcore NEBS Level 3 (SR-3580)
FCC 47CFR Part 15, Class A
Part Number
DDM Plus H2TU-C .................................................. 1222003L1
20

Table 10. DDM+ H2TU-C Specifications

134-266 feet ABAM
267-399 feet ABAM
400-533 feet ABAM
534-655 feet ABAM
Storage ............................ -40° C to +85° C
61222003L1-5, Issue 1 61222003L1-5A