Option 010 is the VNA time domain option. FieldFox computes the inverse Fourier transform of the frequency-domain data in time-domain mode to display reflection or transmission coefficients versus time.

THIS OPTION REQUIRES OPTION 210; OPTION 211 IS RECOMMENDED (SOLD SEPARATELY)

• S11/S21 in the time domain, if Option 210 is ordered
• To get time domain data for all four S-parameters and full 2-port cal, order Option 211

Setup parameters

• Time: Start, stop, a center, span
• Gating: Start, stop, center, span, and on/off
• Numbers of points, velocity vector, line loss, window shape, independent control for all four traces

Time stimulus modes

• Low-pass step: Low-pass step is similar to a traditional time domain reflectometer (TDR) stimulus waveform. It is used to measure low-pass devices. The frequency-domain data should extend from DC (extrapolated value) to a higher value.
• Low-pass impulse: Low-pass impulse response is used to measure low-pass devices.
• Bandpass impulse: The bandpass impulse simulates a pulsed RF signal and is used to measure the time domain response of band-limited devices.

Windows

• The windowing function can filter the frequency domain data, thereby reducing overshoot and ringing in the time domain response.
• Windows Minimum, medium, and maximum manual entry of Kaiser Beta and impulse width.

Gating

• The gating function can selectively remove reflection or transmission time domain responses. In converting back to the frequency domain, the effects of the reactions outside the gate are removed. Using two traces, the results can be viewed with gating on and off.
• Gate types: Notch, bandpass
• Gate shapes: Maximum, wide, normal, minimum