Specifications

Engineering Standard –NSW
Signalling SMS 02
Cerberus Level Crossing Monitor Equipment
March 2005 Version 1.2 © Australian Rail Track Corporation Page 6 of 118
This document is uncontrolled when printed.
3.4.2 Function ................................................................................. 38
3.4.3 Operation ............................................................................... 38
3.4.4 Configuration and Set-up ....................................................... 38
3.4.5 Troubleshooting ...................................................................... 38
3.4.6 3.4.6 Replacement ................................................................. 39
3.5 Input Optoisolator ......................................................................... 39
3.5.1 Description ............................................................................. 39
3.5.2 Function ................................................................................. 40
3.5.3 Operation ............................................................................... 40
3.5.4 Troubleshooting ...................................................................... 41
3.5.5 Replacement Procedure ......................................................... 42
3.6 Output Optoisolator ...................................................................... 43
3.6.1 Description ............................................................................. 43
3.6.2 Function ................................................................................. 44
3.6.3 Operation ............................................................................... 44
3.6.4 Configuration .......................................................................... 45
3.6.5 Troubleshooting ...................................................................... 45
3.6.6 Multiple Output Failures On One Board ................................. 45
3.6.7 Replacement Procedure ......................................................... 48
3.7 Cables .......................................................................................... 48
3.8 Modem ......................................................................................... 49
3.8.1 DPX-223 Modem .................................................................... 50
3.8.2 DPX-213 Modem .................................................................... 50
3.8.3 DPX-224 Modem .................................................................... 51
3.8.4 Maestro Executive 144FM Modem ......................................... 51
3.8.5 Modem Replacement ............................................................. 51
3.8.6 Other Brand Modems ............................................................. 52
3.9 Telephone line .............................................................................. 52
3.10 Interface Relays and Timer ........................................................ 52
3.11 Battery test resistor ..................................................................... 55
3.12 Signage for Remote Battery Test Sites ...................................... 55
4. Systems Maintenance Program ........................................................................... 57
4.1 Maintenance Tasks ...................................................................... 57
4.1.1 Corrective Maintenance ......................................................... 57
4.1.2 Preventative Maintenance ...................................................... 57
4.1.3 EPROM Replacement or Configuration Data Change............. 57