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Tender invited for Development of Train Collision Avoidance System

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ISO 9001: 2008 Effective from 18.06.2012 RDSO/SPN/196/2012 Version 3.1.1<br />

Document Title : Specification <strong>of</strong> <strong>Train</strong> <strong>Collision</strong> <strong>Avoidance</strong> <strong>System</strong><br />

Annexure-IV<br />

Station –to – Loco TCAS units: Packet providing Precise Time Offset Markers & Start<br />

location <strong>for</strong> <strong>Train</strong> Length Measurement:<br />

Field No. <strong>of</strong> bits<br />

PKT_PRIORITY 1<br />

PKT_TYPE 4<br />

PKT_LENGTH 7<br />

FRAME_NUM 15<br />

SOURCE_STN_ILC_IBS_ID 14<br />

SOURCE_STN_ILC_IBS_VERSION 8<br />

DEST_LOCO_ID 14<br />

START_BOUNDARY_LOC 22<br />

REF_START_FRAME_NUM 15<br />

REF_START_OFFSET_INT 8<br />

REF_END_FRAME_NUM 15<br />

REF_END_OFFSET_INT 8<br />

CRC / Checksum 16<br />

Signal Directorate RDSO/Lucknow Page 43 <strong>of</strong> 56

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