Power Requirements; Alarms; Table 8. Worksheet Pw-1 Factors; Table 9. Power Specifications For Litespan H2Tu-C And H2Tu-R - ADTRAN H2TU-C Installation And Maintenance Practice

Litespan H2TU-C Installation and Maintenance Practice

Power Requirements

When deploying any of the Litespan H2TU-Cs, the power requirements for the application
should also be considered for product mix calculations and maximum number of Litespan
H2TU-Cs within a channel bank assembly. Use Worksheet PW-1 in the Engineering and
planning section of Alcatel practice, OSP TL1 software documentation release 7.1 or higher, to
determine whether a particular combination of channel units is within power-drain specifica-
tions. Table 8 lists the ADTRAN Litespan H2TU-C and H2TU-R factors needed to calculate
channel bank power using Worksheet PW-1.
Configuration
Litespan H2TU-C
The Table 8 power factors are derived from the power specifications listed in

Table 9. Power Specifications for Litespan H2TU-C and H2TU-R

Power Bus
–48 VDC talk battery
Power consumption
Power dissipation

Alarms

The selectable alarm threshold crossing alerts are as follows:
• SNR margin threshold
• HDSL2 and DS1 15-minute ES, SES, UAS thresholds
• HDSL2 and DS1 Daily ES, SES, UAS thresholds
• HDSL2 loop attenuation threshold
• DS1 15-minute CV-L, B8ZSS-L, and PDVS-L thresholds
• DS1 daily CV-L, B8ZSS-L, and PDVS-L thresholds
Additionally, the H2TU-C provides alarms for the following conditions:
• HDSL2 LOSW alarm
• HDSL2 unit failure alarm
• HDSL2 loop continuity alarms
12

Table 8. Worksheet PW-1 Factors

A Column Factor B Column Factor
NA
C Column Factor
NA
Litespan
H2TU-C and H2TU-R
0.150 mA
7.2 watts
4 watts
• HDSL2 circuit reset
• DS1 LOS alarm
• H2TU-R AIS, RAI, INCRAI-CI
D Column Factor
NA 0.150 mA
Table 9.
61221002L1-5F