The Hitachi V-522 V-523 V-525 is a portable-type, advanced-class Oscilloscope with a bandwidth of DC to 50 MHz designed with the emphasis on operability and portability and has a following features. (1) Wide bandwidth: The instrument has a bandwidth from DC to 50 MHz. (2) High sensitivity: Sensitivity is 1 mV/div (3) Large 6" screen: Employment of a large square CRT makes waveforms easier to observe. (4) Internal graticule: Employment of an internal graticule CRT permits waveforms observation to be made without parallax error. (5) DC OFFSET: Allows a proportionate observation of any part of an input waveform even when it is in a large amplitude. (6) ALT MAG Allows simultaneous observation of XI and XI0 sweeping waveforms. (7) ALT TRIG Even an observation of two waveforms of different frequencies, the waveform of the each cannel is stably triggered. (8) TV ynchronization: Employment of a new TV ync separator circuit allows the instrument to observe TV ignals stably. (9) Auto focusing: Focusing shift is automatically corrected. (10) Single time base with delayed sweep: (V-523 only) Enlarges any given portion of signal for easy observation. (11) Readout function V-525 only) Set values can be displayed on the CRT for photographing, a waveform with the data. (12) Cursor measurement function V-525 only) The voltage difference and the time difference are measured by the two electronic cursors and displayed on the CRT (13) Automatic conversion of Scale factor V-525 only) The magnified sweep time and vertical deflection factor are automatically converted and displayed on the CRT