AP Instruments Inc. has been manufacturing Frequency Response Analyzers (a.k.a. Analog Network Analyzers) since 1994. We strive to satisfy the needs of the customer through offering useful and innovative products based on the leading edge of technology.

We are located in Northern California near "Telecom Valley," not far from the Bay Area's "Silicon Valley."

AP Instrument's Frequency Response Analyzers are deployed in some of the world's largest corporations, educational institutions, and government entities.