It's been going on for much longer.SleepyCPAP wrote:The schematics I saw a couple years ago showed a "Pressureless Therapy Board" which covered models 150 and 250 (the "bricks"). I figure they can save their money and drop that line. I also found the schematics for a different circuit board which covered the 450, 550, 650, and 750. I don't claim to know that firmware would be the only difference between those four full-data machines (perhaps the blower motors are different between the PAPs and the BiPAPs?), but yes, I'm guessing PRS1 APAP purchasers paid more for the firmware to have their APAP, compared to my CPAP. We thought we were buying different hardware these past three years with the System One, and are now asking in this wish list that they just make one set of hardware in the future. Philips is doing that right now: similar outer cases and similar machine innards (although one board for their non-data machines, a different one for full-data machines, and probably a third special set for ASV).DreamDiver wrote:
# We pay more for an auto, yet the only difference is firmware?
# Auto's can be set to be straight CPAP.
# From a machine creator's standpoint, it makes sense to collapse all of them into one model: Auto.
That's why I like the suggestion for the ability to buy the machine, and then get the firmware you want. That would be a cool feature for the new models.
Note:I do not work for any CPAP company, I'm just a CPAP user obsessed with technology and relentless in my web searches, and yet I can't get to those schematics on the web again. (Philips must have closed their back door to the tech site sometime in the past two years, now it says "access has been disabled").
--SleepyCPAP
Back in 2005, Resmed had an upgrade kit that would upgrade the S7 Elite to and AutoSet Spirit. This is from CPAP(dot)COM's price list from that year.
$289.00 S7 Elite to AutoSet Spirit Upgrade Software
Respironics used the exact same PCA (motherboard) in their Auto w/C-Flex and Pro 2 from that same year. The only difference was the installed firmware. If you open up a Pro 2, one of the chips on the PCA says "Auto C-Flex Domestic".
Den
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