The TAS 4500 FLEX5 is an RF channel emulator that's optimized to meet stringent performance requirements for wide bandwidth applications and for testing third-generation wireless communications products. The 26-MHz bandwidth system offers advanced capabilities, including Dynamic Environment Emulation (DEE), which allows time-varying emulation of real-world conditions in the lab. DEE provides complete control over test channel conditions by enabling users to synthesize complex, time-varying propagation environments or to play back large files imported from actual field measurements. These files can contain an extensive collection of drive test scenarios.The unit's integrated, modular architecture covers a wide range of wireless transceivers operating in the 25 MHz to 3 GHz range. Built-in local oscillators simplify test setup and operation.