(01-28-2014, 07:21 PM)apw5746 Wrote: Can any SD card be used, or does the place that supplied me the machine have to provide a specific one? I'm retired military and can get a 1 GB SD cheaper than my CPAP supplier will charge Medicare, which is a laugh.
I read a manufacturer's comment that unapproved SD cards don't necessarily have the safety requirements for medical equipment. IIRC, the main problem was that when you touched the back of the card to remove it from the machine, the spacing between the electrical components and your finger was not large enough to meet safety requirement for medical equipment.
The manufacturer only approves SD cards that have been verified to have the required spacing for electrical safety.
I don't have a link or exact quote because I don't remember where I saw it.
I'm personally not that worried about it, but make your own decision.
Under normal conditions, the voltages involved are low, you don't actually touch the wiring, etc. However, the safety standards often require extra margins of safety, and require multiple levels of safety.
Many people use generic SD cards. There doesn't seem to be any particular pattern of problems with generic vs. the manufacturer's cards. There are some failures with any type of card.
It may be hard to find1 or 2 GB SD cards these days. SDHC cards seem to work as well as SD cards. The machine won't use the extra space on the card, unfortunately, but an 8 GB card will work as well as a 1 GB or 2 GB card.
Manufacturers are now producing a new SDXC type of card. I haven't heard of anyone trying an SDXC card.
Try it, and at worst, you're out the cost of a card. Nobody's reported an SD card damaging their machine.
