9500 MXC User Manual
3DB 23063 ADAA - Rev 004 July 2007
Vol. II-3-95
• Transmitter path failure, Hot-standby and Space Diversity:
• Tx synthesizer not locked
• Tx transceiver failure
• Tx power failure
• Tx ODU IF synthesizer not locked
• Tx RAC IF synthesizer not locked
• Modulator not locked
• ODU cable unplugged
Transmitter switching is also
remote-end
initiated in the event of an undetected
‘silent transmitter’ failure.
• This occurs when
both
online receive RACs are in receive alarm, whereupon a
switching command is returned to the local-end transmitter
12
.
• This remote-initiated switch is designed to prevent a
silent
transmit failure
(failure cannot be detected by the local hardware/software) from causing the
link to go down indefinitely.
A silent Tx switch is initiated when both the demodulators have lost lock or both
receivers have lost frame synchronization (demodulator not locked alarm).
Transmit Switching Criteria, Frequency Diversity
:
Both transmitters are operational. A switch only affects the online status of the
RACs, which for frequency diversity is the RAC controlling transmit
synchronization.
Online RAC Tx switching is initiated for the following conditions:
• RAC plug-in is missing or incorrect
• RAC software load failure
12
Where
both
RACs are in receive path alarm because of a path problem, no signal is received in either
direction. In such situations the ‘silent Tx’ switch command will be prompted by receive path alarms at
both ends of the link, but will not be received at the transmit ends of the link.
Manual return to primary RAC transmit requires a 9500 MXC CT command in the
System/Controls screen. This should be forced for hot-standby installations using
an unequal coupler where the primary RAC is assigned to the low-loss side.
Содержание 9500 MXC
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Страница 29: ...Volume I 9500 MXC Health and Safety Requirements...
Страница 30: ......
Страница 39: ...Volume II 9500 MXC System Description...
Страница 40: ......
Страница 56: ...Chapter 1 9500 MXC System Overview Vol II 1 16 Alcatel Lucent...
Страница 94: ...Chapter 2 9500 MXC Terminals Vol II 2 38 Alcatel Lucent...
Страница 218: ...Chapter 4 Outdoor Units Vol II 4 4 Alcatel Lucent...
Страница 236: ...Chapter 6 9500 MXC Performance and Diagnostic Features Vol II 6 14 Alcatel Lucent...
Страница 237: ...Volume III 9500 MXC Installation...
Страница 238: ......
Страница 268: ...Chapter 2 Outdoor Installations Vol III 2 26 Alcatel Lucent Figure 2 16 BGXZ Surge Suppressor...
Страница 282: ...Chapter 2 Outdoor Installations Vol III 2 40 Alcatel Lucent...
Страница 300: ...Chapter 4 Installing the IDU Vol III 4 6 Alcatel Lucent...
Страница 321: ...Volume IV 9500 MXC CT...
Страница 322: ......
Страница 326: ...Chapter 1 9500 MXC CT Introduction Vol IV 1 4 Alcatel Lucent Figure 1 3 Standardized 9500 MXC Logos...
Страница 332: ...Chapter 1 9500 MXC CT Introduction Vol IV 1 10 Alcatel Lucent...
Страница 362: ...Chapter 2 Setting Up 9500 MXC CT Vol IV 2 30 Alcatel Lucent...
Страница 368: ...Chapter 3 Installation and Configuration Process Vol IV 3 6 Alcatel Lucent Figure 3 1 9500 MXC CT Menu Bar Menus...
Страница 374: ...Chapter 3 Installation and Configuration Process Vol IV 3 12 Alcatel Lucent...
Страница 384: ...Chapter 4 Licensing Vol IV 4 10 Alcatel Lucent...
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Страница 508: ...Chapter 8 Protection Vol IV 8 26 Alcatel Lucent...
Страница 542: ...Chapter 10 Networking Configuration Vol IV 10 18 Alcatel Lucent...
Страница 546: ......
Страница 550: ...Chapter 12 Date and Time Configuration Vol IV 12 4 Alcatel Lucent...
Страница 558: ...Chapter 13 Software Management Vol IV 13 8 Alcatel Lucent...
Страница 561: ...9500 MXC User Manual 3DB 23063 ADAA Rev 004 July 2007 Vol IV 14 3 Figure 14 2 Login Screen for Admin...
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Страница 632: ...Chapter 15 Diagnostics Vol IV 15 70 Alcatel Lucent Figure 15 27 Example Parts Screen...
Страница 636: ...Chapter 15 Diagnostics Vol IV 15 74 Alcatel Lucent...
Страница 637: ...Volume V Commissioning and Troubleshooting...
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Страница 688: ...Chapter 2 9500 MXC Troubleshooting Vol V 2 32 Alcatel Lucent Terminal FAN Alarm Hierarchy FAN Hardware Fan Failure FAN...
Страница 699: ...Volume VI Appendices...
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Страница 706: ...Vol VI A 6 Alcatel Lucent Figure A 2 Excerpt from a Circuit Allocation Sheet for the Example Ring in Figure A 1...
Страница 791: ...9500 MXC User Manual 3DB 23063 ADAA Rev 004 July 2007 Vol VI B 65...
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Страница 836: ...Vol VI D 10 Alcatel Lucent Figure D 3 Static Routing Screen for Node B in Figure D 2 3 192 168 2 1 Lyons Dpt...
Страница 846: ...Vol VI D 20 Alcatel Lucent...
Страница 856: ...Vol VI E 10 Alcatel Lucent...
Страница 873: ...9500 MXC User Manual 3DB 23063 ADAA Rev 004 July 2007 Vol VI F 17...
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