Pro Plus 2.1 Alarm

[The Spear]

I was diving off Pensacola, FL and my PP 2.1 alarm started going off when I was around 75 feet. I had plenty of air, first dive of the day and had only been down about 10 minutes and had plenty of time left. I couldn't see what was causing it to go off and when I downloaded the data into the oceanic log I can't see where I had any issues. Is there some way to figure out why it kept going off? It went off about 4 different times throughout the dive.

 

[NCadiver]

If you post your download it may help. was there any message or blinking icons?

 

[CajunDiva]

Possibly ascending too quickly?

 

[The Spear]

Here is the file. I can't find anything to set it off. I was diving 32% and I made a dive about an hour later at 25 fsw for about 35 minutes and it never went off. I couldn't see any icons flashing but kept cycling through and had plenty of air, time remaing, wasn't past my max depth, and my p02 was good. I did ascend a little quick at the end a few times but it wasn't that. The alarm would go off for about 10 seconds and I couldn't tell what it was or get it to stop even by selecting the buttons.

View attachment dive alarm.xlsx

 

[CajunDiva]

I dive with a Suunto, so don't have firsthand knowledge, but my husband/dive buddy dives with the same computer as you and he says it is very sensitive to movement and does alarm frequently if he makes a sudden move or ascends even a short distance quickly. Perhaps you could adjust your sample rate to prevent the alarms?

 

[NCadiver]

At 45ft and 25min into the dive the computer went up to fast and at 40ft and 27min into the dive the computer went up to fast again. Both showed >30FPM acent.
0:25 45 FT 0 0 1 843 PSI 0.76 >30 FPM 0:00 2:24 0:00 0 FT 75 F Linked Too Fast
0:25 42 FT 0 0 1 822 PSI 0.73 0-10 FPM 0:00 2:58 0:00 0 FT 75 F Linked
0:26 41 FT 0 0 1 808 PSI 0.72 11-15 FPM 0:00 3:10 0:00 0 FT 75 F Linked
0:26 42 FT 0 0 1 790 PSI 0.72 16-20 FPM 0:00 2:57 0:00 0 FT 75 F Linked
0:27 40 FT 0 0 1 773 PSI 0.7 >30 FPM 0:00 3:24 0:00 0 FT 75 F Linked Too Fast

 

[charlesml3]

It's the ascent alarm. Oceanics have always done this. I've had both a console and now a wrist-mount and both of them will false alarm if you move them too quickly. If my arm is down and I quickly raise it to check it'll register a "too fast." After a while you'll learn to move it slowly.

 

[The Spear]

It's the ascent alarm. Oceanics have always done this. I've had both a console and now a wrist-mount and both of them will false alarm if you move them too quickly. If my arm is down and I quickly raise it to check it'll register a "too fast." After a while you'll learn to move it slowly.

Thanks for the insight. It makes sense that is could be that - I just don't remember specifically what I was doing when it went off. It was a little weird because when I get the usual ascend too fast (like at the end of the dive) it ends pretty quickly once I adjust my rate. Some of these went off for about 10 seconds and it doesn't show an issue in the log. I would have thought the log would show it like near the end of the dive.