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Old 4th January 2013, 13:22   #1 (permalink)
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VRx 3 cell PPO2 monitoring

Hello, I have a question about VRx and 3 cell PPO2 monitoring.
I bought an used Aquatec Voyager Rebreather some time ago. It has a box with 3 O2 cells wired into the Fisher conector. The previous owner connected it to the Shearwater dive computer. I have VR Technology VRx (3 cell monitoring is activated). The problem is, VRx shows just 1 PPO2. I think that problem is in wiring 3 cells to Fisher conector. Does anyone know how are 3 cells in Fisher conector wired (by VRx, of course)?
Any advice welcome. Thank you
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Old 6th January 2013, 08:14   #2 (permalink)
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The VRx is not automatically a 3 cell computer. You may have a 1 cell computer. The board inside is different for each.
You must first make sure you have a 3 cell VRx.
If your sure that the computer is a 3 cell version then DO NOT use a Shearwater cable with the VRx. We were involved with the design specification on the cell interface for that computer and the cables are not compatible.
You must use a different cable.
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Old 6th January 2013, 18:44   #3 (permalink)
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Re: VRx 3 cell PPO2 monitoring

maybe it will help : Cable and Connector Help
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Old 6th January 2013, 20:34   #4 (permalink)
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Re: VRx 3 cell PPO2 monitoring

Quote: (Originally Posted by jpalecek) View Original Post
maybe it will help : Cable and Connector Help
this page will not help you, brent is correct the vrx cables are differant from the shearwater type cables, not only are they wired differantly they have differant isolation electronics fitted

kind regards john routley
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Old 7th January 2013, 07:47   #5 (permalink)
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Re: VRx 3 cell PPO2 monitoring

Asfalt,
Best is to get the correct VRx cable from narked@90. They know what they're talking about and they will give you great service. Last but not least you won't have to second guess your readings.
Best
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Old 8th January 2013, 07:31   #6 (permalink)
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Re: VRx 3 cell PPO2 monitoring

Thank you for all answer. My VRx is realy 3 cells monitoring capable and this function is activated (see a pic).
My problem isn't just connect 3 cells to VRx - I wanna connect all 3 cells to the VRx computer and simultaneously to the VR Technology 3 cells monitoring unit. I wanna use 3 cells monitoring unit as a backup... You can see everything, what is available to me, at a second picture.
Thanks
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