The unit works fine.

This unit is configured with the following options:
Option 011: Allows direct access to the R, A, B samplers and receivers. Typically used for antenna measurements. This flexibility means no transfer switch, couplers and bias-tees. This allows (and requires) you to make your own s-box or setup for many measurements.

Key Features & Specifications:
- Fast-sweeping built-in synthesized source with optional 1 Hz frequency resolution
- Integrated switching test set measures all four S-parameters with a single connection
- Vector accuracy enhancement
- Productivity is enhanced with pass/fail testing, direct printer/plotter output of results, advanced marker functions, and save/recall of test configurations
- Two independent display channels for simultaneous measurement of reflection and transmission characteristics