LO-70 (Oscillograf) 1967
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Oscilloscope "LO-70" from I-kv 1967 produced the Saratov Electrical Instrument Plant named after Ordzhonikidze. The electronic oscilloscope "LO-70" is a universal device of the radio amateur. It is decorated in small size. The oscilloscope is designed to monitor and control the forms of electrical oscillations, as well as to set up amplifiers and low-frequency generators, to identify faults in televisions and receivers. Brief technical characteristics of the oscilloscope: Screen diameter - 50-70 mm. Amplifier Y: Sensitivity (E) at a frequency of 1 KHz - 40 mV. Nonlinear distortion factor of 5%. Bandwidth with frequency response irregularity: from 25 Hz (a) ± 3 dB to 500 KHz. From 25 Hz (b) ± 5 dB to 1000 KHz. Input capacitance 25 pf. Input impedance is 100 kΩ. Sweep Generator: The input frequency range in nine subranges from 10 Hz to 20 KHz. Nonlinear distortions: (a) in the subranges 3 ... 7, not more than 15%. (b) in subranges 2 and 8, not more than 25%. The sweep length along the '' X '' axis in the 1 ... 8 - 55 mm subranges. The minimum amplitude of the signal on the screen of the cathode ray tube, providing a stable synchronization of about 15 mm. The minimum amplitude of the external synchronization is 10 V. The device is powered from an alternating current electrical network with a voltage of 110, 127 or 220 volts at a frequency of 50 Hz. The power consumption of the device 50 watts. The device can operate at temperatures from 15 ° to 35 ° C. The dimensions of the device are 275x185x120 mm. Its weight is 5.5 kg.
Documentation:
Information from collection of Valery Khartchenko