• Frequency: 18GHz
• Connector Type: 7mm (x-x)
• Standard Length: 38 inches
• Industry’s best phase stability with flexure improves measurement accuracy and ensures repeatable and reliable measurements
• Superior flexibility and anti-skid band ensures the cables can be arbitrarily positioned with no spring-back or stress on DUT

The cables feature industry-leading phase stability with flexure, ensuring high measurement accuracy and repeatability. Their superior flexibility and anti-skid band allow for arbitrary positioning without spring-back or stress on the DUT. With increased crush resistance and high flex cycles, these cables promise years of uninterrupted use. Color-coded connectors help minimize connection errors. The exceptional amplitude and phase stability reduce measurement uncertainty, enhancing confidence in the results. Standard lengths and connector configurations are readily available, with custom options also offered.

The maximum value for phase and amplitude stability was established using the following method. The cable was terminated with a short. With the cable in a straight position the VNA was normalized. The cable was coiled 180° around a mandrel 4 inches in diameter counterclockwise and held in position for one sweep. The maximum deviation over the frequency range was recorded. The cable was then coiled 180° around the mandrel clockwise and held in position for one sweep and the maximum deviation was recorded. The cable was then returned to its original position for one sweep and the maximum deviation was recorded.

A cable’s phase stability with flexure specification is a metric used to communicate the impact of cable movement on a DUT measurement. It implies that lower specifications lessen the impact on the measurement (i.e. a cable with a 2° phase stability with flexure specification will have a lesser impact on a measurement than a cable with a 5° phase stability). However, the methods used to determine this specification may not be consistent across manufacturers, and likely do not represent the actual cable movement range of a user.

A better metric to understand a cable’s impact on a DUT measurement is “uncertainty contribution”. The cable’s impact on measurement uncertainty can be calculated by moving the cable through a user’s actual range of motion and recording the S-parameters across the movement. This technique has been thoroughly documented by the European Association of National Metrology Institutes (EURAMET)* and has been made commercially available in Maury’s InsightTM** calibration and measurement software platform.

The following is a StabilityVNA™ cable assembly with 3.5mm NMD Female to NMD Male connectors, and 38 inches overall length.