one sd card works and one doesn't

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.

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.

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.

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.

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>

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.

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.

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.

Dog Slobber wrote: ↑

Tue Jul 09, 2019 3:42 pm

Zonker_bobblehead.gif


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