Bottom Times Differ

[Seaduced]

My first computer was an XR-1, which I love, simple to use, easy to read and reliable. I picked up an XR-2, so I could begin Nitrox diving. My idea was to use the XR-1 as a backup, but the Bottom Times in the planning mode are significantly different. By more than 10%. They have the same algorithm and database, so I don't understand what is going on.

During the first dive, same issue. The XR-2 is still in Air Mode, so it's not a Nitrox vs Air situation. The computers have been traveling together, so the 4000' altitude during the drive to Mexico, should affect them the same.

I've looked through the manuals, I don't see a 'conservatism setting' that could explain the difference. Am I missing something? Is it the PO2 setting?

Darell

 

[redacted]

One may be stuck in an altitude mode. I have seen this problem a number of time with Pelagic computers.

 

[Seaduced]

One may be stuck in an altitude mode. I have seen this problem a number of time with Pelagic computers.

Thanks for the suggestion

Can I reset it by removing the battery? Or is it a pressure sensor error mode?

Darell

 

[redacted]

Thanks for the suggestion

Can I reset it by removing the battery? Or is it a pressure sensor error mode?

Darell

Worth a try but computers ended up being replaced both time I saw this problem. Oceanic replaced them with refurbished computers at a very reasonable cost.

 

[Doug Krause]

Give the battery change a try - reboot and check the plan mode. Give our service dept. a call for assistance.

 

[Seaduced]

Give the battery change a try - reboot and check the plan mode. Give our service dept. a call for assistance.

I'll do that Doug, thanks for dropping a note.

Darell

 

[Seaduced]

After doing about 6 dives with the computers side by side, they report the same numbers (depth and remaining bottom time) while diving. The plan function numbers are pretty close, too.

The only thing I can think of is, they needed a couple of dive/surface interval cycles to get "synchronized."