EIP Microwave Inc. is a prominent manufacturer of frequency counters, VXI and PXI microwave products, and other test equipment. EIP is a pioneer in its industry, creating innovative microwave test and measurement products since 1976. In 1999, former EIP Microwave Inc. employees left to create Phase Matrix Inc. Creating Phase Matrix took purchasing a few key assets of EIP. Phase Matrix currently supports EIP brand products. In 2004, EIP Microwave expanded to manufacture a microwave component group. In 2014, National Instruments renamed this product line to NI Microwave Components. Check out ValueTronics for new, used, and refurbished EIP Microwave products.