Issue
What happens to an alarm message when the clocks go back during the BST/GMT changeover?
Environment
RAM
Remote Alarm Manager
Time
Changeover
BST
GMT
Cause
This is an issue relating to RAM and how it handles BST/GMT changeover.
If an alarm occurs, is it handled correctly by the Remote Alarm Manager? What will happen if the PC time goes back, and the alarm is then cleared before the time passes the original alarm time. Will this cause any issues when viewing the alarm on the Remote Alarm Manager?
Resolution
Tests confirmed that there were no issues with this scenario;
An alarm was generated at 15:46 and a text message was received. The PC time was put back an hour, and the alarm cleared at 14;52. . The alarm and the alarm cleared messages are shown in the RAM log below as 15:46 and 14:52 respectively.
The screen shot below shows the alarm status after the alarm was cleared.
The screen shot below shows the alarm properties, and here there is an error, the cleared state shows 15:52 which is incorrect.
When the time catches up everything returns to normal.
