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The Keysight S97571B software enables vector-corrected measurements between two VNAs up to five meters apart, improving dynamic range and speed while minimizing test cable loss.
Highlights
- Enables long-distance S-parameter measurements such as in cable testing and antenna characterization
- Reduces test-cable loss and preserves wide dynamic range in high-frequency ranges by minimizing test cable length between VNA and DUT
- Achieves accurate and stable measurements by removing phase drift with long test cables
The S97571B software enables vector-corrected magnitude and phase measurements between two Streamline Series VNAs separated by up to five meters. By placing each VNA as close to the DUT as possible, the length of the test cables between the VNA test ports and the DUT can be minimized, helping preserve system dynamic range. This benefit is especially significant at high frequencies, where test cable loss greatly degrades overall system performance. Measurement speed is also improved by using a wide IF bandwidth. For distributed VNA configurations, interconnect cables are used between the two VNAs, but phase drift caused by physical movement or environmental temperature changes can affect the measurement results. The S97571B supports automatic refresh cal, which compensates for this phase drift and ensures stable, accurate measurements with distributed VNAs. The S97571B requires a multiple instrument measurement setup using two VNAs together with the S97551B.
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