Operations and Maintenance Manual

_
JANUS
®
Multi-Protocol Reader 2.4 Appendix
Confidential UM 360467-110 Revision: B Page 237 of 247
© Kapsch TrafficCom Canada Inc. 2021
All information contained herein is proprietary to, and may only be used with express, written permission from, Kapsch TrafficCom Canada Inc.
FILE: UM 360467-110 REV B3 MPR 2.4 CLEAN.DOCX 03/02/2021 1:01
Kapsch TrafficCom
Glossary
Name Term or Component
Alias or explanation
Baud Rate
Physical transmission speed: bits, or changes in state, per second
Capture Zone
An area where an OBU is detected by the MRFM-S.
Capture Zone Span Time
The amount of time it takes an OBU to pass through a capture zone.
Channel
One RF channel or one lane of traffic
Dummy frame
A time interval placeholder
Dynamic voting
A reader mode in which the voting time is dynamically set according to
prevailing traffic speeds on a channel-by-channel basis.
Earth ground system
The earth ground system must comply with the U.S. National Electrical
Code (NEC) requirements for a grounding electrode.
Express Lane - Wide
No barriers between lanes, straddle antennas required. Same as ORT
feedline
The cable that carries the RF signal to or from the antenna. Also called
transmission line.
frame
one scan of an RF Channel. There can be a maximum of eight frames for
one Reader
Format Incompatible report
A report sent to the Lane controller, generated when a non-TDM tag is
seen by the Reader.
Host Computer
Not supplied by Kapsch TrafficCom. Computer used to monitor/control
the LC within the Toll Plaza. The Reader is accessible to a Toll Plaza Host
computer (if available) via the web interface.
Inter-Reader network
An Ethernet network of Readers at an ORT site used for ORT installations
having more than 8 regular-width lanes (or 5 wide lanes) in one direction
Lane assignment
The process of providing a transaction report to the lane controller, with
the intent of correctly identifying the lane of travel of the transponder
equipped vehicle. The overall goal is high programming success rate, high
lane assignment accuracy, and low consistent reporting latency.
Majority (Voting)
A lane assignment mode where the channel with the most handshakes is
deemed to be the assigned channel.
Non-Redundant Reader
A Reader having only the Secondary Reader, used for Vehicle
Identification or Traffic Control Management applications
Plaza
Structure for toll collection, typically with barriers between lanes and
canopy overhead. Vehicles slow for ETC.
Primary Side
Primary CTM (or the set of Primary Reader components)
Reader
Generic term for the JANUS redundant Reader in this manual