M9374A PXIe Module for M9018A PXIe Chassis. Vector Network Analyzer 300kHz-20GHz, 2 Ports (one slot module). Unit sold with a valid calibration certificate. M9374A is a PXIe Module for the M9018A PXIe Chassis. M9374A= PXIe vector network analyzer 300 kHz - 20 GHz and is a full two-port VNA that fits in just one slot. It can function as a two-port VNA, or with multiple modules can be configured for multiport or multi-site measurements.