Scared Silly
Contributor
WTF?? This means the deco calculation, depth, dive time & temp showing on the screen of a Zoop can be 1/2 a minute old at any point in time..30 secs is a long time when doing an assent.
No it means that it records and stores the state (depth, deco, etc) every 30 seconds. The sampling rate for displaying depth and deco during the dive is much faster.
The person who wrote that is thinking about what is seen when the data is down loaded.