N9918A-211 - Keysight Technologies Inc. Vector network analyzer full 2-port..

• Adds reverse measurements to the VNA
• All four S-parameters (S21, S11, S12, S22), magnitude and phase
• 30 kHz to 26.5 GHz
• Directivity > 42 dB, dynamic range 100 dB to 9 GHz, 90 dB to 18 GHz
• Flat output power ( 1 dB) across whole frequency range, adjustable in 1 dB steps

A base N9918A combination analyzer includes a cable and antenna analyzer. Option 210 provides transmission/reflection or S21 and S11 measurement capabilities, along with one-port and enhanced response calibrations. To obtain all four S-parameters - forward and reverse (S11, S21, S12, S22), and full 2-port calibration, Option 211 should be ordered. Full 2-port calibration is the most accurate calibration available with FieldFox network analyzers.

Option 211 also adds A/B and B/A measurement capabilities to the vector voltmeter mode, available as Option 308.

Option 210 is a prerequisite for Option 211. So you must order Option 210 if you want Option 211.

This option can be added as a product upgrade.