PCI-6259 incompatibility with some Asus Mainboards

[ElbaTech]

Hello,
I don't have really a question, but wish to report for the benefit of other Users that I have found an incompatibility between the PCI-6259 Multifunction Card and different Asus mainboards.
The problem experienced is in the Analog Output section, which cannot be updated fast enough by the NI-DAQmx 8.5f5 drivers. I have checked this using NI-MAX --> NI-DAQmx Devices --> Test Panels  --> Analog Output, asking to generate a sinusoidal waveform at a  rate of 100.000 samples/s. This works fine on different computers but not on computers with the following motherboards:
1) Asus P5L-MX
2) Asus P5VD2-X
3) Asus P5K-E
(I have tried both with Intel Celeron L Conroe 420 1.6 and Intel Core Duo QUAD Q66000).
Lowering the rate to 10.000 samples/s works also on these motherboards.
Thanks for your attention,
Marco

[AdamB]

Hi there,

Thanks for this information.  I just wanted to know what code you are using as a basis for these tests?  How is the output being updated by the software?  What errors are you getting?

Any more information might actually help me get to the underlying reason for this problem.

Thanks

AdamB

[ElbaTech]

Hi,
thanks for the fast answer. The reported situation is actually independent on my driving software (which, however, is written with LabWindows CVI 8.1), because I initially test the cards with NI-MAX.  The version of NI-MAX is 4.2.1. Setting the sinusoidal output rate to 100.000 samples/s causes an error whose number I forgot to write down (sorry for this) but maybe you can exactly retrieve it because it states that this throughput cannot be sustained and invites to lower the sample rate or change the transfer mode from DMA to Interrupts.
Either lowering the sample rate or outputting single values works fine, but the card works perfectly at the max rate on the other mainboards, so I believe it should do the same here.
Thanks  a lot,
Marco

[Bill_Anderson]

Hi Marco,

I found this same problem with a Asus PK5-SE motherboard using a PCI-6229 board.  Even in MAX, if the AnalogOutput of 1 channel was > 33,000 samples/sec a DAQmx error message of -200016 was generated.  (Took me a long time to sort out this problem.)

If I tried a USB-6259 board, other problems occurred, and the board failed to work.

However, if I used a PCIexpress-6259 board, MAX AnalogOutput and my C++/DAQmx program worked perfectly.

Actually, this problem was first reported in Feb, 2006: http://forums.ni.com/ni/board/message?board.id=250&message.id=19597&requireLogin=False. 

I understand that Asus is the largest motherboard maker in the world.  Why does NI not test ASUS motherboards?

In fact, what motherboards does NI test?  I know they test Dells, but what else?  Intel motherboards?

Cheers,

Bill

[DOC-doc]

Hi

I am having also bunch of problems working on Asus P5K-E motherboard.

Worst is that when I click on the browse button of a path control, Labview hangs, and even sometimes the file explorer.

Here is my configuration :

Motherboard : P5K-E

CPU : I ntel Core2 duo cpu E6750 @ 2.66 GHz

OS : Windows XP Pro SP2

Ram : 2 Go 

HD :

[stilly32]

Please see the update on this thread - Analog Output sometimes underflows.

Thanks, 

Andrew S

[DOC-doc]

The only solution we found was to throw away the Asus mainboard and by a new one (Intel).

ALL the problems desapeared.

It costed us around 100 hours. Thank you NI.

[stilly32]

Hello,

This issue has been improved in DAQmx 9.0. 

Thanks, 

Andrew S