Cover: A ray of light falls on the DF2 Display Formatter, which illuminates the activity taking place on the GPIB by disassembling the instructions and displaying them in familiar IEEE 488 message mnemonics. Contents features Unraveling the Mystery on the GPIB, IEEE 488 Bus- Going Your Way?, and Pulse Generator or Function Generator- Making an Intelligent Choice. In this issue schematics and illustrations are clearly marked in lime-green. New Products introduces The T932A and T935A Portable Oscilloscope, The New C-5B Oscilloscope Camera, and the Harmonica Connector to Logic Probe Adapter.