STC SmartScanIS, Руководство пользователя

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EUD-2016026-00 Rev.2, SmartScanIS User’s Guide for Union Pacific, 14 January 2021
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Chapter 13
Radio Announcements
This chapter describes the use of radio announcements to report defects to affected train
crews via the road channel.
Radio announcements consist of a set of predefined spoken messages with each message
triggered by a particular event or set of events. The message formats and announcement
criteria are covered below.
Anytime a message needs to be announced, the system's holdoff logic kicks in, and the
process is as follows:
1 Check the Holdoff line.
The Holdoff line is active when the road channel is busy and inactive when the road
channel is clear.
2 If the Holdoff line is inactive, announce your messages and skip the remaining steps.
3 If the Holdoff line is active, start the Holdoff timer and begin monitoring the Holdoff line.
The maximum amount of time the system delays spoken announcements while waiting
for a busy radio channel to clear, is 40 seconds.
4 If the Holdoff line becomes inactive before the Holdoff timer expires, announce your
messages.
5 If the Holdoff timer expires without the Holdoff line ever becoming inactive, announce
your messages.
13.1 Arrival Messages
The arrival message is used to announce train arrival at the site. This message is an option
and is enabled or disabled using the
Announce Arrival Message option on the Messages
submenu. (In addition to having the message enabled, the system must recognize a passing
train before giving the arrival announcement.) The format of this announcement is:
U-P Detector Milepost (mile) [track indicator]
For example, the announcement is like this.
U-P Detector
Milepost 3-5-9 point 4