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Re: Does it matter what speed Compact Flash (CF) you use with Emax 2

2011-07-21 by Matthew

Hi Ted, 

Thanks for the reply. The problem is class 1 and class 2 applies only to SD/SDHC cards. I'm asking about CompactFlash which has it's speed measured in multipliers 40x, 80x, 300x. 

What CompactFlash speed multiplier are you using? Or are you using a SD/SDHC card?

Thanks,
Matt

--- In emax@yahoogroups.com, Ted Summers <djtbs1@...> wrote:
>
> I wouldn't use larger than a 1GB card.
> Additionally- the SCSI controller in Emax 1 and 2 is an 5380 with max
> 1.5MB/s transfer rate.
> 
> Go with Class 1 or Class 2 cards to avoid problems.
> There is no point in getting "high speed" cards- you will only cause
> yourself problems.
> 
> But what do I know....
> 
> Regards,
> Ted
> 
> 
> On Thu, Jul 21, 2011 at 9:13 AM, Matthew <matticulous@...> wrote:
> 
> > **
> >
> >
> > I bought the PCD-50B and have successfully formatted and used a 64MB CF
> > card with the Emax 2. It's a PNY branded card made by Toshiba. The model
> > number is THNCF064MMA. Per a spec sheet I found online, the card supports
> > PIO mode 4 with a sustained write max of 1.5 Mbytes/sec and a sustained read
> > max of 6.5Mbytes/sec.
> >
> > I have also tried using two different Transcend 2GB 80x Compact Flash
> > cards. They both produce strange results which I assume are due to their
> > speed. For instance, the cards format and verify but simply selecting them
> > via the Drive Select button can cause presets to be created (00-99) with
> > blank names. I've even seen an issue where accessing the drive causes the
> > sample memory to disappear. Like I said, very strange. And these strange
> > problems disappear after powering off and switching to the 64M CF card.
> >
> > So, is my issue with these cards their size (2GB) or the fact that they are
> > 80x speed? What is everyone else using? Can I use an 80x card (or faster) if
> > it's 1GB or less or do I need to be looking for older Compact Flash cards
> > that are 40x and under? I assume 40x works because 150K/sec seems to be what
> > 1x is and the 64MB card I believe to be ~44x since ((6.5 MByte/sec * 1024) /
> > 150) = ~44
> >
> >  
> >
> 
> 
> [Non-text portions of this message have been removed]
>

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