ni 6534 timing

[autrusson]

I 'am using the NI6534 card with a 32 bits inputs interface. I use the NI cable with one meter long.

1° question:
On the NI6534 card i see overshoot and undershoot, the signal is always above 2V and below 0.8V but you have diode on the card to eliminate this effect, why overshoot are still alive.

2° question
When i have the pattern 000000-FFFFFF-0000000-FFFFFFF...., i get errors in the transmission ?
The setup is greater than 6 ns and the hold time greater as 4 ns

best regards

[Marc L.]

Hello,

Could you explain with more details what do you mean by 'overshoot are still alive' ?
And what is the number of your error during the transmission ?

best regards

Marc Larue
NIF

[autrusson]

We have now no errors during the transmission, the ni card works on the falling edge,
the option in labwindow to choose falling or rising edge don't work in my application.
It's true that we have overshoot and undershoot on the Ni card but there is no effect.

best regards