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Re: one sd card works and one doesn't
Posted: Thu Jul 04, 2019 9:43 pm
by Zomby Woof
chunkyfrog wrote: ↑Tue Jul 02, 2019 8:03 pm
No more than a year's data is ever retained, which uses less than 1Gb.
At the end of a year, the oldest days get deleted, one at a time.
Not quite accurate Froggy.
I have over four (4) years of RESMED data on my SDHC.
It occupies just under 8 MBytes - nearly 2GB per year.
I suspect that the RESMEDs will write detailed data to the card
until it reaches full capacity. At that point it may delete
the oldest records and write the newest session data.
Not an authority, of course, but it is too late for me to
do detailed - well, anything really
Re: one sd card works and one doesn't
Posted: Thu Jul 04, 2019 9:55 pm
by palerider
Zomby Woof wrote: ↑Thu Jul 04, 2019 9:43 pm
I have over four (4) years of RESMED data on my SDHC.
It occupies just under 8 MBytes - nearly 2GB per year.
I think there's something wrong with your math there.
Re: one sd card works and one doesn't
Posted: Thu Jul 04, 2019 10:03 pm
by kingwillard
Zomby Woof wrote: ↑Thu Jul 04, 2019 5:30 pm
kingwillard wrote: ↑Tue Jul 02, 2019 5:04 pm
I couldn't get my older 256 mb and 2 gb sd cards to work with my respironics bipap so my seller sent me a 1 gb which worked fine. He also replaced my bipap with another one of the same model. I just decided to start using the sd feature again and can''t find the 1 gb card he sent me. I tried my older cards and the 256 mb worked after I formatted it on my pc. But, despite formatting for fat and fat 32, the bipap won't accept the 2gb card. I want to get a larger capacity card for my bipap and need to know what to look for in a new card so it will work. Thanks.
TLDR: Buy an SDHC card with an 16Mbyte capacity, Class 10/UHS1 transfer speed up to 80MB per second- Brand : SanDisk
Commonly available, guaranteed to work, and available online (Amazon) @ $5.93 per each.
Far exceeds requirements on your CPAP machine, can be successfully used in videocams up to professional grade.
Will store up to 16 years of CPAP data.
SecureDigital (SD) cards have three characteristics that are significant:
Capacity: "SD"= 0-2Mbytes; "SDHC"= 2-32Mbytes; "SDHC"= Above 32Mbytes
Operating System: SD= FAT; SDHC= Fat 32; SDHX= exFAT
Write Speed:
SD= slowest write speeds, perhaps too slow in some CPAP applications
, and should be avoided.
SDHC= video transfer speeds with transfer speed generally by "Class". Class 6 is 6MB per second write speed and is satisfactory for 4k video recording which exceeds all CPAP requirements I am aware of.
SXHC= most modern specification and usable for professional level video applications. "UHS1" spec cards deliver 25MB per second write speeds and are dramatic overkill for any CPAP application. "UHS3" spec cards write at up to 312MB per second which is ludicrous unless you are a network video production facility.
Thanks for the info.
Re: one sd card works and one doesn't
Posted: Fri Jul 05, 2019 9:37 am
by Zomby Woof
palerider wrote: ↑Thu Jul 04, 2019 9:55 pm
Zomby Woof wrote: ↑Thu Jul 04, 2019 9:43 pm
I have over four (4) years of RESMED data on my SDHC.
It occupies just under 8 MBytes - nearly 2GB per year.
I think there's something wrong with your math there.
Without a doubt PR!
But what's a few orders of magnitude between friends, right?
Re: one sd card works and one doesn't
Posted: Fri Jul 05, 2019 11:07 pm
by kingwillard
Thanks everyone. Have a good weekend.
Re: one sd card works and one doesn't
Posted: Tue Jul 09, 2019 1:12 pm
by bjhunt01
zonker wrote: ↑Thu Jul 04, 2019 5:33 pm
i've just noticed something odd.
we have at least four forum members from dallas (and dallas-ish).
what does this mean?
do thay all have meetings and talk about me behind my back?
is there a plot afoot?
<whimper>
Yes we are talking about you but we didn't want you to know. Because then you would get a really big head as we describe all your wonderfulness, helpfulness, and that you are darling, sweet, and lovely.
Re: one sd card works and one doesn't
Posted: Tue Jul 09, 2019 1:54 pm
by zonker
bjhunt01 wrote: ↑Tue Jul 09, 2019 1:12 pm
zonker wrote: ↑Thu Jul 04, 2019 5:33 pm
i've just noticed something odd.
we have at least four forum members from dallas (and dallas-ish).
what does this mean?
do thay all have meetings and talk about me behind my back?
is there a plot afoot?
<whimper>
Yes we are talking about you but we didn't want you to know. Because then you would get a really big head as we describe all your wonderfulness, helpfulness, and that you are darling, sweet, and lovely.
i would expect nothing less from three of you.
but that "devilish" character that's in "dallas-ish"???
no way!!
Re: one sd card works and one doesn't
Posted: Tue Jul 09, 2019 2:42 pm
by Zomby Woof
bjhunt01 wrote: ↑Tue Jul 09, 2019 1:12 pm
Yes we are talking about you but we didn't want you to know. ...we describe all your wonderfulness, helpfulness, and that you are darling, sweet, and lovely.
Yeaahh, let's go with
THAT 
Re: one sd card works and one doesn't
Posted: Tue Jul 09, 2019 3:42 pm
by Dog Slobber
bjhunt01 wrote: ↑Tue Jul 09, 2019 1:12 pm
zonker wrote: ↑Thu Jul 04, 2019 5:33 pm
i've just noticed something odd.
we have at least four forum members from dallas (and dallas-ish).
what does this mean?
do thay all have meetings and talk about me behind my back?
is there a plot afoot?
<whimper>
Yes we are talking about you but we didn't want you to know. Because then you would get a really big head.
Zonker would never get a big head.
Perhaps you're getting it confused with this years CPAPTalk character bobblehead doll, featuring Zonker.
- Zonker_bobblehead.gif (1016.67 KiB) Viewed 1832 times
Order now from CPAP.COM. Supplies are limited.
Re: one sd card works and one doesn't
Posted: Tue Jul 09, 2019 4:59 pm
by zonker
Dog Slobber wrote: ↑Tue Jul 09, 2019 3:42 pm
Zonker_bobblehead.gif
Order now from CPAP.COM. Supplies are limited.
HEY! get a 3D printer and start making that up.
it's the only bobble head i've ever seen that looks BETTER than the model.