Multiple Source Control mode and Frequency Offset Amplifier Testing: Automatically perform swept power gain compression or swept frequency gain compression Optoelectronic Devices: Measure E/O and O/E devices Gain Compression application Internal Bias tees Extended Power Range (Source Step Attenuator and test port attenuator) Multiport Testing Rear Panel IF inputs NxN Calibration Utility for Mixer Measurements Embed/De-Embed Application High Stability Frequency Reference 1 Hz Frequency Resolution Calibration Choices from SOLT, offset short, waveguide and Multiple line kit "Virtual Adapter Removal" Calibration Multiple Source Control Power Meter Correction The Anritsu 37397D network analyzer is an instrument which measures the complex transmission and reflection characteristics of two-port devices in the frequency domain. It does this by sampling the incident signal, separating the transmitted and reflected waves, and then performing ratios that are directly related to the reflection and transmission coefficients of the two-port. Frequency is swept to rapidly obtain amplitude and phase information over a band of frequencies of interest. The Anritsu 37397D network analyzers utilize synthesized-frequency sources to provide a known test stimulus that can sweep across a range of frequencies or power levels. This network analyzer also can perform ratioed measurements (including phase), which require multiple receivers. The Anritsu 37397D can provide a wealth of knowledge about a device under test (DUT), including its magnitude, phase, and group-delay response.