ST60 depth alarms

[cpedw]

What is the difference between shallow/deep alarms and shallow/deep anchor alarms on an ST60 Tridata instrument?

I have found this minor variation in the manual:

An alarm condition occurs if:
• The depth is less than the SHALLOW or SHALLOW anchor threshold.
• The depth is greater than the DEEP anchor threshold.
• The depth crosses the DEEP threshold.

It seems the shallow alarms are identical; the deep are either a transient or persisting condition. Is that all there is to it?

Derek

 

[LittleSister]

I was puzzling over the same thing just recently (though for ST40).

 

[prv]

I assume the idea isn't so much that the behaviour is different, as that you'd set the main shallow warning to your preference and then pretty much leave it. The anchor alarms you'd reprogram each time you wanted to use them, to be a little way either side of what you expect to see. Then when you drag in towards the beach, or off into deep water, the alarm wakes you up. It's a feature carried over from when they couldn't necessarily assume that a yacht would have GPS available for the purpose.

Pete

 

[cpedw]

I assume the idea isn't so much that the behaviour is different, as that you'd set the main shallow warning to your preference and then pretty much leave it. The anchor alarms you'd reprogram each time you wanted to use them, to be a little way either side of what you expect to see. Then when you drag in towards the beach, or off into deep water, the alarm wakes you up. It's a feature carried over from when they couldn't necessarily assume that a yacht would have GPS available for the purpose.

Pete

Thanks, that makes sense of it. Somewhat redundant now though.

Derek

 

[prv]

Thanks, that makes sense of it. Somewhat redundant now though.

Indeed, I've never used the anchor depth alarms.

Pete