AWG Series have included a frequency counter which could measure frequency from 100mHZ to 200MHZ under CH2/CNT utility regime. For testing purpose you may connect CH1 and CH2 using a BNC cable.
Set any signal at CH1 with any frequency and press the Output button.
Now at CH2 (please press CH1/2 button) press button Utility and then following the column down press the button at the right of Counter. You will see the value of the frequency you programmed at CH1 immediately.