With the RSAVu off-line analysis software, engineers can acquire signals using their Tektronix real-time spectrum analyser (RSA) and then view the captured information offline on a PC. The PC based RSAVu software can provide the same data-explorationcapabilities as those existing on the customer's RSA. This enables them to capture files on one RSA instrument and share these with multiple PC users for off-line analysis. For example, educators can now demonstrate and explain transient RF effects, capturing a signal on a RSA and then have students monitor and interpret the signals on their own PC using RSAVu. Additionally, customers with complex analysis needs are able to use RSAVu to work on the captured signal at their desk, allowing the RSA to be used by other engineers. RSAVu also facilitates remote analysis. A single RSA instrument can acquire a data file and transmit this to a remote location for later viewing, enabling the application and product experts to perform the analysis no matter where they are in the world. The analysis functionality of RSAVu is identical to that provided with the RSA3300A, RSA3408A and WCA200A real-time spectrum analysers. A customer must own one of these instruments to acquire signals for transfer to RSAVu. RSAVu is available as a free downloadable file. The software options for the RSA units are also available on PC by purchasing a USB software key that enables the software options to function with RSAVu.