ADC HDSL4 user manual Power Consumption, Maximum Power Dissipation, H4TU-C Power Parameters

Page 68

Appendix A - Specifications

LTPH-UM-1031-03, Issue 3

 

 

POWER CONSUMPTION

The three most important power parameters of an H4TU-C are its maximum power consumption, maximum power dissipation, and maximum current drain.

Table 20 describes line-powered and locally powered (remote) circuits on the maximum reach condition (34 kft.) using 26 AWG wire.

Table 20. H4TU-C Power Parameters

 

 

-48 Vdc Power Consumption

Heat Dissipation (Watts)

-42.5 Vdc Current (mA)

 

 

 

(Watts)

 

 

 

 

 

 

 

Number of

Remote Power

Typical

Maximum

Typical

Maximum

Typical

Maximum

Doublers

Source

 

 

 

 

 

 

 

 

 

 

 

 

 

 

None

Locally powered

7.6

8.4

5.9

6.4

179

197

None

Line-powered

11.0

12.1

6.2

6.8

259

285

1

Locally powered

14.6

16.1

6.6

7.2

344

378

1

Line-powered

20.0

22.0

7.1

7.8

471

518

2

Locally powered

26.7

29.4

8.4

9.2

628

691

2

Line-powered

32.9

36.2

9.3

10.3

774

852

 

 

 

 

 

 

 

 

MAXIMUM POWER DISSIPATION

The maximum power dissipation measures the power converted into heat which builds up within the unit. It contributes to the total heat generated in the space around the unit. It is used to determine the maximum number of fully loaded shelves per bay that does not exceed the maximum allowable power dissipation density in watts per square foot to comply with GR-63.

In COs, the maximum power dissipation for open-faced, natural convection-cooled mountings is limited to

134.7watts per square foot per GR-63-CORE. Use this limit and the parameters in Table 21 on page 61 to determine the maximum number of H4TU-C circuits that can occupy one CO bay.

This is a worst case situation since it assumes the entire CO is subjected to the maximum power density. More favorable conditions would permit increasing the number of shelves per bay without jeopardizing the CO thermal integrity.

The thermal loading limitations imposed when using the H4TU-C in a Controlled Environmental Vault (CEV) or other enclosures are determined by applying its power parameters to the manufacturer's requirements for each specific housing.

The -48 Vdc power consumption is the maximum total power that the H4TU-C consumes or draws from the shelf power source. This parameter is needed when the H4TU-C is in a location remote to the CO it is serving. It determines the battery capacity required to maintain an 8-hour, standby battery reserve for emergency situations. Battery capacity, therefore, limits the maximum number of line units which can be installed in a remote enclosure. Use the data in Table 21 to perform this analysis.

60

September 12, 2003

H4TU-C-319 List 1

Image 68
Contents HDSL4 H4TU-C-319 List 1 Line UnitIssue Date Revisions Made2001 Initial release March 15 September 12Using this Manual Inspecting ShipmentInspecting Shipment Table of Contents Appendix B Functional Operation Config Menu List of FiguresNavigational Keys for the Maintenance Terminal Screens List of TablesFeatures OverviewApplications Front Panel H4TU-C-319 List 1 Front PanelFront-Panel Feature Function Front-Panel DescriptionBRG LineFront-Panel Display Messages Message Full Name DescriptionSystem Information Messages a Diagnostic MessagesLoopback Messages Marg Margin Current margin threshold setting measured in dB FRM Frame SF, ESF, UnfrCode Line Code AMI, B8ZS Substitution B8ZSInstallation Installing the H4TU-C-319 List 1 into a ShelfVerification with a Downstream Device VerificationVerification without a Downstream Device Provisioning Using the Mode and SEL PushbuttonsSetting Options through Mode and SEL Resetting to Factory Default Displaying System Parameter SettingsDisabling an Alarm Loopback ModesUsing a Maintenance Terminal Connecting to a Maintenance TerminalNavigational Keys for the Maintenance Terminal Screens Logon ScreenPress this key Menu FunctionsPress this key To access this menu Menu Functions Setting Date and Time Provisioning TasksSetting Circuit ID Numbers Inventory ScreenConfiguring the System Config MenuConfig Menu Standard Options defaults shown H4TU-C-319 List 1 Standard Config Menu Options 60 min38 dB AutoH4TU-C-319 List 1 ADC Config Menu Options ADC Config Menu Screen Selection Description OptionsDIS DEFHDSL4 BER Hber NoneLpbk ALM ENADS1/DSX-1 24-Hour PM Threshold ParameterResetting to Factory Defaults Clearing the History, Alarm, and Event Log Screens Config Menu Master ClearSystem Overview Using the Monitor Screen to View System ActivityMonitoring System Activity and Performance MAL Monitor Screen DescriptionsField Description PRM InslLPF Using the Performance Screens to View Performance Data Performance History at the DS1 InterfaceH4TU-C DS1 25-Hour Performance History H4TU-R DS1 Current Statistics Acronyms Used on the DS1 Performance History Screens Acronym DescriptionPerformance History at the HDSL4 Interface H4TU-C Hdsl Loop 1/Loop 2 31-Day Performance HistoryH4TU-C Hdsl Loop 1/Loop 2 25-Hour Performance History Acronyms Used on the HDSL4 Performance History Screens SESUAS LoswsUsing the Performance Screens to View Alarm Data Alarm History at the DS1 InterfaceScreen Alarm Front-PanelDescription H4TU-C DS1 Alarms on H4TU-R DS1 Alarms on thisRAI Rrai PRM-NE PrmnAlarm History at the HDSL4 Interface HDSL4 Alarms at the H4TU-C onlyUsing the Event LOG to Track System Events System Event LogPRM-FE Event Log Entry Messages ListEvent Log Messages Using the Report Menu Report Menu Full ReportReport Types Type Contains the following informationTesting System AlarmsFront-Panel System Alarms Front-Panel Alarm Description To Inhibit Message aFront-Panel Alarm Description PrmnAlarm Option for DLC Feed Retiring System AlarmsOCT55 Test Pattern with AMI Line Code Remote LOS and AIS ResponseLoopback Operation Loopback SummaryGeneric Loopback Commands Special Loopback CommandsSetting the Loopback Time-Out Option Lbto Manual Loopback SessionLoopback Test Procedures General Troubleshooting TipsLoopback Modes Gnlb Test Procedures Summary of HDSL4 Loopback and Activation CodesLoopback Code Description Test Set Craft Port MODE/SELName A3LB Test ProcedureA3LB Addressable Repeater Loopback Commands A5LB Test Procedure A5LB Addressable Repeater Loopback CommandsTesting LTPH-UM-1031-03, Issue Testing with H4TU-C Bert Generator Bert Signal GeneratorBert Signal Pattern Option DescriptionTesting with H4TU-R Bert Generator H4TU-R Bert Generator ScreenAppendix a Specifications HDSL4Wideband Jitter Looped UI maximum Narrowband Jitter Looped One-way DS1 Delay 700 µs Wander LoopedSystem H4TU-C Power Parameters Power ConsumptionMaximum Power Dissipation HDSL4 Reach Chart Maximum Current DrainLoop ATTENUATION, Insertion LOSS, and Reach 196 KHz dB/kftFuse Alarm Network Management Control BusSystem Alarm Output Pin Craft PortGround Fault Detection Spectrum IssuesAppendix B Functional Operation TimingAppendix C Compatibility Appendix D Product Support Sales AssistanceSystems Integration Online Technical Support Online Technical PublicationsAppendix E Abbreviations Lais LattLbpv LbtoLTPH-UM-1031-03, Issue Certification and Warranty FCC Class a Compliance Limited WarrantyWorld Headquarters For Technical Assistance