I'm a little confused as to exactly what you want. First, I'm going to assume that you are talking about TTL level signals, so the counters will be used. I'm also assuming that you have a DAQ card available to you. You can control output pulses on one counter, and set up a frequency on the other counter, but I'm unclear as to the relationship between the two.
Are my assumptions correct, and what is the relationship (in clearer terms)?
Mark