Adc HiGain H2TU-C-319 List 4E Uživatelský manuál stáhnout pdf (Strana 81)

LTPH-UM-1049-02, Issue 2 Appendix B - Functional Operation

H2TU-C-319 List 4E January 9, 2002 73

TIMING

The low loop wander (0.3 UI max) of an H2TU-C, when used with compatible regenerators and remote units,

allows the circuit to be used in all critical timing applications, including those that are used to transport Stratum 1

timing.

GROUND FAULT DETECT

The H2TU-C has a Ground Fault Detect (GFD) circuit which detects a ground or a resistive path to ground on any

wire of the HDSL2 loop. This makes the product compliant with the Class A2 requirements of GR-1089.

1 2 ... 76 77 78 79 80 81 82 83 84 85 86 87 88

USER MANUAL 1
LTPH-UM-1049-02, Issue 2 2
CTRL ESC 3
TABLE OF CONTENTS 5
LIST OF FIGURES 7
LIST OF TABLES 8
OVERVIEW 9
COMPATIBILITY 10
APPLICATIONS 10
FRONT PANEL 11
3 or more seconds 15
INSTALLATION 16
VERIFICATION 17
PROVISIONING 18
Loopback Modes 19
Disabling an Alarm 19
USING A MAINTENANCE TERMINAL 20
Figure 3. Logon Screen 21
Table 4. Logon Screen Menus 21
PROVISIONING TASKS 22
Setting Circuit ID Numbers 23
Configuring the System 24
Parameter Threshold Count 30
CV-L (BPV) 133,400 30
ES-L, ES-P, PRM, PDVS-L 648 30
SES-L, SES-P 100 30
UAS-P, UAS-L 10 30
Table 10. SuperFrame Format 33
“Don’t care” bit 35
Test Access 36
Defective H2TU-L 37
Standby H2TU-L 37
Auxiliary 38
Dual DSX-1 Port Option 39
Resetting to Factory Defaults 40
PERFORMANCE 42
SPACEBAR ENTER 43
SPACEBAR 45
USING THE REPORT MENU 58
Table 20. Report Types 59
SYSTEM ALARMS 60
Retiring System Alarms 61
Remote LOS and AIS Response 62
Customer 63
Premises 63
Generic Loopback Commands 64
Special Loopback Commands 64
MANUAL LOOPBACK SESSION 65
-BAND LOOPBACK SESSIONS 67
Figure 32. Loopback Modes 68
A2LB Test Procedures 69
A3LB and A4LB Test Procedures 72
SmartJack Test Procedure 72
APPENDIX A - SPECIFICATIONS 73
POWER CONSUMPTION 74
MAXIMUM POWER DISSIPATION 74
MAXIMUM CURRENT DRAIN 74
Ω, as shown 75
Ω per kft 75
IST 4E CARD-EDGE CONNECTOR 76
Fuse Alarm 77
System Alarm Output Pin 78
CRAFT PORT 79
Mode SEL 80
HMU control 80
HDSL2 SPAN 80
GROUND FAULT DETECT 81
APPENDIX C - COMPATIBILITY 82
APPENDIX D - PRODUCT SUPPORT 83
APPENDIX E - ABBREVIATIONS 84
CERTIFICATION AND WARRANTY 87
´,-Q¶6o¨ 88

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