Operations and Maintenance Manual

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JANUS
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Multi-Protocol Reader Ver. 2: Appendix
Confidential UM 360450-210 Revision C Page 209 of 288
© Kapsch TrafficCom Canada Inc. 2014
These drawings and specifications contain confidential and proprietary information and are the property of Kapsch TrafficCom Canada Inc. and are issued in strict
confidence and will be kept confidential and used solely for the purpose intended and for no other purpose and shall not be transmitted, reproduced, copied, and/or
used as the basis for manufacture or sale of apparatus unless otherwise agreed to in writing by Kapsch TrafficCom Canada Inc.
FILE: UM 360450-210 REV C JANUS MPR2 OPERATOR-MAINTENANCE MANUAL.DOCX 08/17/2015 11:42
Kapsch TrafficCom
Constant busy state on sync bus
A Reader that erroneously holds the sync bus in a BUSY state causes all other Readers connected to
the bus to time-out while waiting for the READY state. As a result, all of their CTM SYNC LEDs will be
flashing red. Disconnect each Reader one at a time from the sync hub until the fault clears then
reconnect each Reader in the order of removal until the fault reappears. Service each faulty Reader.
Sync board Failure Indicator for incomplete cable connections
The CTM SYNC LED will flash steadily red if there is no activity on the Rx port on the terminal block of
the SPM (R+ and R- on the connector). If both transmit and receive connections are cut off from the
sync hub the indicator will flash red. If only the transmit connection is disconnected and there are other
Readers in the synchronization network, the CTM SYNC LED stays green.