Impedance Test Adapter for HP 4195AProduct Description Impedance test adapter suitable for HP 4195A with N port cable supporting a frequency range of 100 kHz to 500 MHz. Product Details HP 41951 69001 (Keysight) Official style Product Overview A compact impedance test adapter suitable for HP 4195A with N port cable and a frequency range of 100 kHz to 500 MHz. Key Features N port compatibility Frequency range: 100 kHz 500 MHz Applications Impedance testing for RF devices Signal analysis