PlayStation Does 387 Vigilance Work?

I've set it to normal on the side panel but Brighton to Burgess hill so far and no sort of audible alert other than the AWS?

 

Think so. Did you activate the DSD also? Using the horn can reset it.

 

yes, the class 387 vigilance does work. It will only sound if you don't touch any controls for about 45 seconds.

 

Pretty sure I left the unit coasting for longer than 45 seconds , I did not have DSD enabled - is that a requirement ?

 

Activate the DSD then.