6062E PCMCIA DAQ card overheats

Hi
I just got a 6062E card, and I'm having trouble with the analog outputs flaking out after the application runs for a while. The problem appears to be related to the temperature, although the 2 AO channels together are only driving a bit under 2 mA RMS, less than the 5 mA spec in the manual. Are there any steps I can take to keep the card running cooler, aside, obviously, from lowering the analog output voltages?
In the congfiguration I'm using, I'm running 2 AO channels, one of the counters, 2 AI channels, and the analog trigger is enabled with its output being routed to the counter source (with the counter gate coming from one of the AOs).
Thanks,
Solved!
Go to Solution.

Thanks.
Well, I've tested it in a 2nd notebook, and it usually takes longer (several hours typically) but it does eventually give the same behavior, the exact time required apparently depending on environmental conditions. In both cases the notebooks were operating in an air conditioned room in the mid 70s F or less. It also overheats when I'm just running the Test Panel doing analog input or letting the notebook sit idle.
Given that it overheats in two very different notebooks, a new Compaq Evo N800c (P4) and a fairly old IBM ThinkPad i series 1400 (Celeron), with very different PCMCIA slot configurations in a variety of conditions, one can only conclude that either this particular card is defective or the design is thermally
marginal for its intended operating environment.
Now, I don't doubt that the card works fine if you keep it at the specified maximum temperature, which was apparently changed in a revision of the manual from 50 C to 40 C. However, everything I've been able to find about notebook thermal engineering suggests that they normally run with an internal temperature in the mid 40s C. If you think that this is just a bad unit, I'd be happy to try exchanging it for one that works better, but... I think you can see where I'm having doubts about this.
Regards,
Ben Buckner

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