Cathode (tube) voltmeter VKS-7b.
Instruments for adjusting and controlling the PTA.The cathode (tube) voltmeter "VKS-7b" has been produced since 1948 by the Gorky plant named after V.I. Frunze and the Minsk Radio Plant. In terms of design, the devices of different factories are somewhat different. The voltmeter is designed to measure AC voltage with a frequency of 20 Hz to 100 MHz. Measurement limits from 0.1 to 150 V on five scales: 0-1.5; 0-5; 0-15; 0-50 and 0-150 V. Instrument error 3% of full scale value on 5 scales with sinusoidal voltage. The measurement accuracy with the DNE-2 divider is no more than +/- 5%. Frequency error in the frequency range from 30 Hz to 50 MHz is not more than +/- 1%, at a frequency of 100 MHz is not more than +/- 3%. Input resistance: at low frequencies 4 mOhm; at a frequency of 10 MHz 450 kOhm; at a frequency of 50 MHz 300 kOhm. The dimensions of the device are 200x285x340 mm. Weight 11 kg.
