TCSM2 TC1C chassis » History » Version 1
falconia, 07/26/2024 11:31 PM
| 1 | 1 | falconia | h1. TCSM2 TC1C chassis |
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| 3 | "Some photos":https://www.freecalypso.org/members/falcon/pictures/Nokia_TCSM2/TC1C_chassis/ |
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| 5 | TC1C can be regarded as the main chassis for a single logical unit of Nokia TCSM2. It holds the following components: |
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| 7 | * One power supply module; |
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| 8 | * One TRCO card; |
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| 9 | * Up to 14 TR16 or TR12 [[TCSM2_transcoder_cards|transcoder cards]]. |
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| 11 | The power supply module (goes into the slot farthest on the right) takes in -48 VDC and produces +5V and -5V for TR12/16 and TRCO cards. The backplane provides the following functions: |
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| 13 | * Delivers power to all modules; |
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| 14 | * Interconnects the transcoder card bus (4 PCM highways, control signals, microprocessor bus) between those transcoder cards and TRCO; |
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| 15 | * Brings out interchassis signals from TRCO to the dedicated connector on its back face. |
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| 17 | The external back face of TC1C backplane features connector S00 that is the interchassis interface. All signals on this connector come from TRCO card; the TC1C backplane merely connects them front to back. Signals in the upper half of S00 [[TCSM2_interchassis_cable|connect to ET modules]] in [[TCSM2_ET1TC_chassis|ET1TC chassis]]; signals in the lower half of this connector form an alarm bus (supposedly daisy-chained between multiple TC1C units in larger systems) that can be ignored in lab setups. |
