Option 10 provides an internal bias tee for the VNA Master or for the S412E LMR Master. In Vector Network Analyzer mode, the internal bias tee permits testing of amplifiers that require their system power to be supplied from their RF signal port.

In addition to the internal bias tee, the MS20xxC VNA Master features two input ports (BNC(f)) that offer you the ability to supply external bias current to the unit under test.

In the MS20xxB VNA Master and the S412E LMR Master only, the internal bias tee can be used in both the Vector Network Analyzer and the Spectrum Analyzer. The bias voltage is available to both the VNA Port and the SPA RF In port.

To access the Bias Tee menu in the MS20xxC, MS2026B, or MS2028B VNA Master, the MS20xxB VNA Master, or the S412E LMR Master while in the VNA Measurements view (not the Field Measurements view), press the Sweep function hard key to open the Sweep menu (refer to Bias Tee Menus (MS20xxC, MS2026B, and MS2028B)), then the Configure Ports soft key, then the Bias Tee Setup soft key. The Bias Tee menu (Bias Tee Menu) is opened with the Bias Tee soft key in the Bias Tee Setup menu (Bias Tee Setup Menu).

To access the Bias Tee menu in the MS20xxB VNA Master and the S412E LMR Master in the Field Measurements view, press the Shift key and then the System (8) key to open the System menu (refer to Bias Tee Menus (Field Measurements View)). Then press the Application Options soft key, and then the Bias Tee Setup soft key. The Bias Tee menu (Bias Tee Menu) is opened with the Bias Tee soft key in the Bias Tee Setup menu (Bias Tee Setup Menu).