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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 Draft 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 Buildout ......................................... 0-133 feet ABAM
DSX-1 Line Code .............................................. AMI, B8ZS
DSX-1 Format .................................................... SF, ESF, Unframed
Power
Tested with the ADTRAN H2R (P/N 1221045L1) and the ADTRAN H2TU-R (1222026L6).
Total Power ........................................................ worst case input voltage @ 160 mA with H2TU-R
HTU-C Power Dissipation ................................. 4.25 watts with H2TU-R
Span Power ......................................................... -190 VDC (Internally Generated) Class A2 compliant; 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
CI / Wescom 3192 STS-1 Office Repeater Shelf-Mounted
Dimensions ......................................................... 4.75 in. High x 0.69 in. Wide x 10.25 in. Deep
Weight ................................................................ Approximately 6.5 oz.
Environment
Temperature ....................................................... Operating (Standard) -40°C to +70°C
Compliance
UL Listed
Bellcore NEBS Level 3 (SR-3580)
FCC47CFR Part 15, Class A
Part Number
3192 H2TU-C ..................................................... 1222004L2
61222004L2-5A
Table 9. 3192 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
Section 61222004L2-5, Issue 1
19
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