Download High Frequency Track Circuits

Table of Contents
SECTION
1.0
1.1
1.2
2.0
2.1
3.0
3.1
3.2
3.3
3.3.1
3.3.2
3.3.3
4.0
TOPIC
PAGE
GENERAL INFORMATION ......................................................................... 1-1
INTRODUCTION ......................................................................................... 1-1
R.A.I.L. TEAM AND TECHNICAL SUPPORT.............................................. 1-2
OPERATION..................................................................................................... 2-1
High Frequency Track Circuit Function ............................................................. 2-1
DESCRIPTION ................................................................................................. 3-1
Transmitter........................................................................................................ 3-1
Receiver............................................................................................................ 3-1
Associated Hardware ........................................................................................ 3-2
Track Connections and Rail Bonds................................................................... 3-2
Receiver Relay.................................................................................................. 3-2
Lightning Protection .......................................................................................... 3-2
APPLICATION AND INSTALLATION DATA ................................................... 4-1
4.1
Frequency Selection ......................................................................................... 4-1
4.2
Track Circuit Connection Arrangements ........................................................... 4-1
4.2.1 General Information .......................................................................................... 4-1
4.2.2 Typical Track Circuit Illustrations ...................................................................... 4-1
4.3
Equipment Mounting Data................................................................................. 4-5
4.4
Tuning Sensitivity Adjustments ......................................................................... 4-6
5.0
FIELD INSPECTION AND SERVICING ........................................................... 5-1
5.1
Test Equipment and Periodic Inspection........................................................... 5-1
5.1.1 Transmitter........................................................................................................ 5-1
5.1.2 Receiver............................................................................................................ 5-1
5.2
Field Servicing .................................................................................................. 5-2
APPENDIX
PARTS LIST........................................................................................A-1
A.1
Transmitter and Receiver Assemblies ......................................................... A-1
A.2
Circuit Boards .............................................................................................. A-1
A.3
General Parts List........................................................................................ A-2
A.4
Auxiliary Tabulation ..................................................................................... A-4
SM5865 (12/99)
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