where can I find a PCMCIA card for RS422 Digital I/o?

[LockheedJoe]

I have an RS-422 single pulse signal coming to me from an external device. I have a laptop that has software, written by me, that needs to trigger when the RS-422 single pulse signal is received. Is there a PCMCIA card anywhere that can receive the RS-422 pulse and allow me to trigger?

Thanks for your help.

[pavanb]

What is the nature of the signal that you receive? specs on the RS-422 single pulse signal?

[pavanb]

The PCMCIA 485 card is capable of communicating with 422.
Now for the application. A lot of this is going to depend on the timing of the pulse.
What are the exact requirements:
1. How fast do you need to trigger after the pulse?
2. How wide is the pulse and what is the polarity?
Could the pulse be viewed as some type of character or other serial event (maybe a break) and then the driver interrupts on that?
3. What does trigger mean in this case?
Do you need to send some data, sample some DAQ inputs, ...?