The Lightning 37200C/37300C Vector Network Analyzers (VNAs) are high performance tools designed to make fast and accurate Sparameter measurements of active and passive devices across the 22.5 MHz to 65 GHz range. These network analyzers integrate a synthesized source, S-parameter test set and tuned receiver into a single compact package that is ideal for bench-top testing. The Lightning 37100C VNAs are configured as Direct-Access Receivers for antenna, frequency conversion, and multiple output device measurements. These network analyzers consist of a synthesized source and tuned receiver in a single compact unit, with direct access provided to all four receiver samplers via the front panel. The 37100C offers the ultimate flexibility to meet most receiver measurement needs, while maintaining the ability to measure all four S-parameters with the addition of a reflectometer setup at the front end of the receiver. High throughput measurements are achieved in each model through the use of fast, 12-term error corrected sweeps, fast GPIB data transfers and an intuitive user interface. All measurement results are displayed on a large LCD color display or on an external VGA monitor.Each of the network analyzers is designed for easy upgradeability.Any version of the 37000C VNA can be upgraded to accommodate new capabilities or additional frequency ranges by ordering the appropriate upgrade kit. 37100C to 37200C or 37200C to 37300C upgrades are also supported.