INTRODUCTION
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1-3
SIG-00-07-11 SEPTEMBER 2012 (REVISED OCTOBER 2019)
Version No.: B.2
1.2.2 PTC Hand Throw Switch Monitoring Application
In the PTC Hand Throw Switch Monitoring application shown in Figure 1-2, the VIU can be used
to monitor and report switch positions in both dark and signaled territory.
Figure 1-2 VIU Used in PTC Hand Throw Switch Monitoring Application
1.3
SYSTEM DATA LOGS
The VIU maintains several data logs as described in the following paragraphs.