Agilent Technologies Agilent 4396B - Manual (Page 36)

Using Two A ctive Probes
Figure 1-7. Network Analyzer Mode (Two A ctive Probes)
1. Connect one active probe to the R input.
2. Connect the other active probe to the B input.
3. Connect the RF OUT port to the DUT .
4. If necessary , terminate the DUT with a load.
1-16 Installation and Setup Guide