The TEKTRONIX 494P adds remote control and automated spectrum data acquisition and analysis to the performance and portability features of the TEKTRONIX 494 Spectrum Analyzer. The 494P front panel can be controlled remotely (except for those controls intended for local use only, such as INTENSITY). Waveform processing functions are added to do some spectrum analysis locally. The IEEE Std 488 General Purpose Interface Bus (GPIB) port added in the 494P allows it to be used with a wide variety of systems and controllers. This versatility is accomplished because the 494P is implemented according to the Tektronix Interface Standard for GPIB Codes, Formats, Conventions, and Features. This standard promotes ease of operation, and makes the 494P compatible with other Tektronix instruments and, as much as possible, with GPIB instruments from other manufacturers.