The AVX-FD3-PS uses ECL logic-level inputs and outputs. This model offers two outputs. OUT1 is simply the input frequency divided by the factor set on the front-panel thumbwheel switches. The pulse width of this output is equal to one period of the input. (For example, for an input frequency of 125 MHz, the output pulse width would be 8 ns.) The instrument also divides this output by a factor of 2, and the resulting signal is available on OUT2. OUT2 is a squarewave output, with 50% duty cycle. If the divisor (N) is set to 1, the instrument acts as a buffer, with the output pulses having approximately the same pulse width as the input pulses.
