Instrument Test Cables Extend Measuring Ports of HP8510 VNA

There is little doubt about the accuracy and versatility of the HP8510 Vector Network Analyzer. However, with all its bells and whistles there is still one serious shortcoming - very few devices-under-test can be connected directly to the measuring ports. The ability to either calibrate out, or window out, the interference effects of interseries adapters or interconnecting cables is well documented. Thus, the stability and repeatability of the interconnection between the DUT and the VNA is crucial. This paper introduces a new Instrument Test Cable, with a previously unattainable level of phase, VSWR and insertion loss stability, intended for use with the HP8510 VNA.