Specifications; Table 19. Ddm+ Htu-C Specifications - ADTRAN HDSL DDM+ HTU-C Installation And Maintenance Practice

SPECIFICATIONS

Specifications for the DDM+ HTU-C are detailed in
Specification
(Tested with the ADTRAN Low-Voltage HRE (P/N 1247041) and the ADTRAN Low-Voltage HTU-R (P/N 1247026L5))
HTU-C M R Power Dissipation:
61247003L6-5A

Table 19. DDM+ HTU-C Specifications

Loop Interface
Modulation Type:
Mode:
Number of Pairs:
Bit Rate:
Baud Rate:
Service Range:
Loop Loss:
Bridged Taps:
Performance:
HDSL Tx Signal Level:
Input Impedance:
Return Loss:
Network Interface
4-Wire DSX-1
DSX-1 Output Level:
DSX-1 Line Buildout:
DSX-1 Line Code:
DSX-1 Format:
DSX-1 Channelization:
Power
Total Power:
Span Power:
Fusing:
Table 19.
Description
2B1Q
Full Duplex, Echo Cancelling
Two
784 kbps per pair
392 k baud per pair
Defined by Carrier Service Area Guidelines
35 db maximum at 196 kHz
Single Taps < 2000 feet, Total taps < 2500 feet
Compliant with Bellcore TA-NWT-001210
13.5 dBm
135 Ω
20db (40 kHz to 200 kHz)
0 dB
0-133 feet;
133-266 feet;
266-399 feet;
399-533 feet;
533-655 feet
AMI;
B8ZS
Auto;
Unframed
Channels 1-12 on Loop 1;
Channels 12-24 on Loop 2
–48 VDC at 200 mA with HTU-R
–48 VDC at 370 mA with HTU-R and HRE
–48 VDC at 510 mA with HTU-R and two HREs
5.2 watts with HTU-R
6.2 watts with HRE and HTU-R
8.6 watts with two HREs and HTU-R
–190 VDC nominal for voltage and current limit at
160 mA ±5% (internally generated)
1.00 amps (not field-replaceable)
Specifications
39