SeaHound1
Registered
I don't have a Suunto, but if RTFM didn't help, try "OFF" or setting the nitrox value to 21.
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DO *NOT* SET YOUR Vyper2 TO "OFF"!I don't have a Suunto, but if RTFM didn't help, try "OFF" or setting the nitrox value to 21.
Generally speaking, it's a very bad idea to just make a wild guess with your dive computer, and if anyone were foolish enough to listen to that absolutely incorrect advice (marked in red), they would have a watch. Setting the "dive mode" to OFF does not even display the depth and dive time information you get from GAUGE mode, so someone with no depth gauge who sets their Vyper2 to OFF would be in a very precarious position at best and likely dry for 48 hours until they can switch the computer back into dive mode. (The manual does not state whether there is a 48-hour lockout before you can change out of "OFF" mode, but as there *is* such a lockout before you can change out of "GAUGE" mode after diving it, it's only logical.)The Manual:The OFF mode disables the DIVE mode, and allows the TIME mode to be used underwater.
That is correct. On any Suunto computer, you can always switch from AIR mode to NITROX mode, but you can only switch back to AIR mode once the no-fly time has been completed. The no-fly time, meanwhile, is 12 hours or the desaturation time, whichever is longer. (Desat time can get up to 24-48 hours, depending on the dive series.)
(If you switch into GAUGE mode and make a dive, the no-fly time is set at a fixed 48 hours. You will not be able to switch into AIR or NITROX mode until 48 hours of surface time.)
You can always set your oxygen fraction to 21% if you dive air while in NITROX mode, of course. The two things to remember with the Vyper2 are that *unlike* the Gekko (for example), the computer will *not* revert to 21% automatically after a certain period, and *like every Suunto computer*, you *NEVER* round the oxygen percentage up. (31.9% oxygen should be entered as 31, not as 32. See section 6.2.1 on page 30 in the manual [pdf].)
Hi, ClayJar.
I know the above is true about my Vyper, and am considering getting a Vyper2, but have had second thoughts because the literature says it allows for only 2 gas mixes, and when I do deco, I usually do bottom on air, have a travel gas (mix 1), and then do O2 (mix 2) -- 3 gases.
In another post, I saw that I can actually do the dive above, since I can go from AIR to MIX 1 then MIX 2. But if what you say is true, that I can't switch back to AIR after having done the dive above, then that means I can't do a second dive with air + travel gas + O2, since I can only now handle 2 [NITROX] gases.
Can you confirm? This would really be helpful in deciding whether to get the Vyper2 or the VyTec.
Thanks!
If you are in AIR mode, your dive can use one and only one mix, i.e. air. If you are in NITROX mode, your dive can use one or two mixes. You can only switch from AIR mode to NITROX mode with your Vyper2 in surface mode, not during a dive. (And you can only switch back once you've completely off-gassed.)