The PM 3243 Portable 50 MHz Storage Multiplier Oscilloscope enables the measurement, storage and multiplying of signals at a high sensitivity (5 mV/DIV). A wide choice of display modes is available, such as single channel operation, two channels alternately or chopped, two channels added, with normal and inverted position for one input signal, two channels multiplied, and a main and delayed time-base. The PM 3243 oscilloscope features a tapless power supply with low dissipation. The power supply operates satisfactorily from any a.c. mains voltage between 90 V and 264 V, or any d.c. voltage between 100 V and 200 V, thus obviating the need for adjusting the instrument to the local mains voltage. All these features combine to make the PM 3243 oscilloscope suitable for a wide variety of applications. Features Summarising, the PM 3243 oscilloscope is characterised by the following features: — 5 mV sensitivity at 50 MHz. — Built-in 40 MHz multiplier. — Simultaneous display of the product and one of the factors. — Variable persistance and storage. — Advanced design. — Highly efficient power supply unit, operating from a wide range of a.c. or d.c. voltage supplies without voltage switching. Note: The design of this instrument is subject to continuous development and improvement. Consequently, this instrument may incorporate minor changes in detail from the information contained in this manual.