Operations and Maintenance Manual

JANUS

Multi-Protocol Reader 2.4 Maintenance Instructions

Confidential UM 360467-110 Revision: B Page 165 of 247

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

Prerequisites: Sync hub terminal block mounted in a location central to the Readers.

Note 1: The exact location of this terminal block should be marked on a site map to aid system

maintenance.

• Readers arranged so that no Reader is farther than 1500 ft. (457.2 m.) from the sync hub

terminal block

• Readers arranged so that the total synchronization network cable length is no greater

than 2000 ft. (609.6m.).

• No more than six (6) Readers in the synchronization circuit

Note 2: It is recommended that each synchronization cable have two or more spare conductors to support

future service repair calls.

Installing a synchronization circuit

1. Connect the Readers to the Sync hub terminal block as in Figure 5-11 on page 166.

Attention: Ensure that cables do not connect from the GND terminal on the SPM to the Sync hub terminal

block, as this can create a ground loop and affect synchronization performance.

Note: Before you continue, you will need to gain access to the reader web interface through a service

laptop. Refer to Accessing the Reader web interface, page 42.