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MDR Compatible SD Cards
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Cards Certified for MDR Use
| Manufacturer |
Series |
Capacity |
Speed |
Faceplate
Slot |
Remote
Memory |
| SanDisk |
Extreme III SD |
1 GB |
20 MHz |
Yes |
Yes |
| SanDisk |
Extreme III SDHC |
4 GB |
20 MHz |
Yes |
Yes |
| SanDisk |
Ultra II SD |
1 GB |
10 MHz |
Yes |
No |
| RiDATA |
Supreme Series SD |
2 GB |
22 MHz |
Yes |
No |
| RiDATA |
Lightning Series SD |
1 GB |
10 MHz |
Yes |
No |
| RiDATA |
Lightning Series SD |
4 GB |
10 MHz |
Yes* |
Yes* |
* Firmware release 2.24.12.0 and later.
Uncertified Cards
SD specifications are constantly changing and manufacturers are not consistent
in their implementations. So each brand, series and capacity of card must be
certified for reliable performance. Certified cards are listed above.
Because of stringent timing requirements, some cards that function reliably in the faceplate
will fail or function unreliably in a remote memory module (RMM).
High capacity SD cards up to 4 GB will be fully utilized by the MDR.
However, cards up to to 32 GB may be used, in which case, only 4 GB will be utilized.
The need for more than 4 GB is difficult to imagine. Larger cards are supported
in case 4 GB cards become scarce.
If you wish to try uncertified cards, we recommend first looking for the brands and series
listed above. In any case, make sure the card meets the speed and capacity requirements.
Cards marked 66x have a transfer rate of 10 MB/s and should work in the faceplate
and possibly in a RMM. Cards marked 133x have a transfer rate of 20 MB/s and should
work in both locations. Cards marked Class 6 operate 6-45 MB/s, so it is difficult to predict
success.
We invite comments on results you receive from both certified and uncertified cards.
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Capacities When Logging All Data at Maximum Rates
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1 GB = 800 hours
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2 GB = 1600 hours
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4 GB = 3200 hours
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This page will be updated as additional cards are certified.
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