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Technical specifications: Capacitance (10-13-0.02) F, inductance (10-8–16x103) Gn Resistance (10-3–2x107) ohms Conductivity (10-9-10) Cm Q factor, loss factor 10-3-103 The error is ±0.15% Offset voltage 2±0.2 V Measuring signal levels (0.1±0.02) V and (1±0.2) V Range selection: automatic, manual RS-232C interface Dimensions, weight: 90x265x317 mm, 2 kg Power supply: ~220V, 10 VA

Technical specifications: Voltage reproduction range Uk 200 mV 0.07 + 0.01 DC: from 50 MV to 600 V, Uk 2 V 0.05 + 0.005 sub-bands (UK) 200 MV; 2; 20; 200; 600 V Uk 20 V 0.05 + 0.005 Basic error, ± (% of U + % of Uk): Uk 200 V 0.07 + 0.01 Uk 600 V 0.1 + 0.02 Voltage reproduction range Uk 200 mV 0.2 + 0.05 AC: from 1 mV to 600 V, sv. 20 to 40 kHz 0.2 + 0.1 sub-bands (Uk) 200 mV; 2; 20; 200; 600 V Uk 2; 20 V 0.15 + 0.02 Basic error, ± (% of U + % of Uk): from 20 Hz to 20 kHz 0.15 + 0.02 Uk 200 V; 600 V: 0.2 + 0.05 from 40 Hz to 1 kHz 0.2 + 0.05 DC power reproduction range: from 1 Ma to 200 mA, sub-bands (Ic) 200 Ma; 2; 20; 200 mA Ic 200 Ma 0.1 + 0.02 Basic error, ± (% of I + % of Ic): Ic 2; 20; 200mA 0.1 + 0.01 Power reproduction range AC: from 10 Ma to 200 mA, sub-ranges (Ic) 200 Ma; 2; 20; 200 mA 0.15 + 0.05 Frequency range from 20 Hz to 1 k Hz Basic error, ± (% of I + % of Ic): USB interface Operating temperature range from minus 10 to +50 C Dimensions; weight 428×327×235× mm; 10 kg

General characteristics: LCD screen 12.1" with a resolution of 1024 x 768, keyboard, mouse. USB, Ethernet. Supply voltage: 230 V / 50 Hz, power: 450 V·A. Operating temperature range: from +5° to +40°C. Dimensions (W x H x D): 470 x 330 x 570 mm, weight: 37 kg

Technical specifications: reproduction of DC voltage from 50 mv to 1000 V - ranges of 200 mV; 2; 20; 200; 1000 V - error 0.01 – 0.023 % reproduction of the sinusoidal AC voltage from 0.3 mV to 750 V - ranges of 200 mV; 2; 20; 200; 750 V - error 0.15 – 0.225 % - frequency range 20 Hz - 100 kHz (20 Hz - 5 kHz on the range. 200 V; 20 Hz - 2.5 kHz on the range. 750 V) reproduction of DC power from 0.03 µA to 50 A - ranges of 200 Ma; 2; 20; 200 mA; 2; 50 A - error 0.012 – 0.022 % reproduction of AC power of sinusoidal shape from 3 µA to 50 A - ranges of 200 Ma; 2; 20; 200 mA; 2; 50 A - error 0.062 – 0.23 % - frequency range 20 - 5000 Hz (45 - 1000 Hz on the range. 50 A) RS-232C interfaces; USB operating temperature range from + 5 to +40oC dimensions 184.5x465x540.5 mm weight 20 kg power supply ~ 230 V

Technical specifications: The waveform is sinusoidal, rectangular (TTL) Frequency range from 2 Hz to 2 MHz Frequency setting error ±0.05% Frequency instability ±0.02% in 15 min Signal amplitude ±5 V at 600 ohm load ±10 V without load Limits for adjusting the output signal level from 1 mV to 3.75 V (scr) at a load of 600 ohms from 2 mV to 7.5 V (scz) without load Signal level unevenness ± 2% at frequencies from 20 Hz to 200 kHz relative to 1 kHz ± 5% at frequencies from 200 kHz to 2 MHz Harmonic coefficient ± 0.3% at frequencies from 2 to 20 Hz ± 0.2% at frequencies from 20 Hz to 100 kHz ±1% at frequencies from 100 kHz to 2 MHz Parameters of the rectangular (TTL) signal form log. "1" 3 2.4 V; log. "0" ≤ 0.4 V the duration of the front, the cutoff is not more than 100 ns Operating temperature range from minus 10 °C to + 40 °C Power supply ~230 V, 50 Hz; 10 V×A Dimensions; weight 210×71×255 mm; 2

Technical specifications: Frequency range of sinusoidal waveforms, 0.1 Hz - 17 MHz Frequency range of rectangular-shaped signals, 0.1 Hz - 1 MHz Frequency setting discreteness, ±(0.012 + 0.0001 f), f in Hz Frequency instability in 15 minutes, no more than ± 1•10-5 Smooth signal attenuation, 40 dB Stepwise signal attenuation, 20, 40, 60 dB

The devices are designed for: measurements and registration of the main indicators of the quality of electrical energy established by GOST 32144-2013 (GOST R 54149-2010) with registration of protocols according to GOST 33073-2014; measurements and registration of the main parameters of electrical energy in single-phase and three-phase electrical networks (including the effective values of voltages and currents with sinusoidal and distorted curves; active, reactive and full electrical power); measurements of parameters of secondary circuits (load capacity of measuring transformers and voltage drop) in electric energy metering systems and electric energy losses in power supply lines. functional test and verification of connection of meters of active and reactive power and energy, energy measuring converters of voltage, current at the places of their operation; functional test and verification of the connection of single-phase and three-phase electric energy meters without breaking current circuits to detect theft of electricity; measurements of electricity losses in the power supply line. The PKE-A energy tester provides registration with subsequent transfer to a personal computer (PC) of statistical data on the PKE: Values of the PCE according to GOST 30804.4.30 (GOST P 51317.4.30) and GOST 30804.4.7 (GOST P 51317.4.7) with a registration depth of 512 days; Values and durations of voltage dips and overvoltages; Values of the short-term dose of flicker; Parameters of the electrical network and vector diagrams with the depth of registration: - 24 hours for averaging time of 3 s, - 200 days for averaging time of 10 min. The program "Energy Monitoring ES" provides the formation of quality control protocols in the form of GOST 33073-2014.

Designed to measure electrical quantities (DC voltage and strength, AC voltage and strength, DC electrical resistance) during demonstration work in physics. The device performs the function of a demonstration multimeter. Technical specifications: Measurement of DC voltage from 0 to 100 V measurement error, not more than 1.0 % Measurement of AC voltage from 0 to 60 V measurement error, not more than 1.0% measurement of DC power from 0.01 to 200 measurement error, not more than 1.0 % Measurement of AC power from 0.01 to 200 mA measurement error, not more than 1.0 % Measurement of DC resistance from 1 ohm to 2 mOhm measurement error, no more than 1.0% power supply from the USB port of the computer power consumption, no more than 0.6 V × A weight, no more than 0.3 kg overall dimensions 172x25x77 mm

Technical specifications: Voltage reproduction range Uk 200 mV 0.07 + 0.01 DC: from 50 MV to 600 V, Uk 2 V 0.05 + 0.005 sub-bands (Uk) 200 mV; 2; 20; 200; 600 V Uk 20 V 0.05 + 0.005 Basic error, ± (% of U + % of Uk): Uk 200 V 0.07 + 0.01 Uk 600 V 0.1 + 0.02 Voltage reproduction range UK 200 mV 0.2 + 0.05 AC: from 1 mV to 600 V, Uk 2; 20 V 0.15 + 0.02 sub-bands (Uk) 200 mV; 2; 20; 200; 600 V from 20 Hz to 20 kHz Basic error, ± (% of U + % of Uk): sv. 20 to 40 kHz 0.2 + 0.1 Uk 200 V; 600 V: from 40 Hz to 1 kHz 0.2 + 0.05 Power reproduction range Ik 200 Ma 0.1 + 0.02 DC: from 1 Ma to 5 A, Ik 2; 20; 200 mA 0.1 + 0.01 sub-bands (Ik) 200 Ma; 2; 20; 200 mA; 2; 5 A Ik 2 A; 5 A 0.1 + 0.02 Basic error, ± (% of I + % of Ic): AC power reproduction range: from 10 Ma to 5 A sub-bands (Ic) 200 Ma; 2; 20; 200 mA; 2; 5 A 0.15 + 0.05 Frequency range from 20 Hz to 1 kHz Basic error, ± (% of I + % of Ic): USB interface Operating temperature range from minus 10 °C to + 50 °C Dimensions; weight 420×342×184.5 mm; 10 kg

Technical specifications: B5-78 (15 V, 3 A); B5-78/1 (30 V, 2 A); B5-78/2 (50 V, 1 A); B5-78/4 (20 V, 1.5 A); B5-78/6 (30 V, 4 A); B5-78/7 (50 B, 2.5 A) Voltage measurement error: ±0.3 V Current measurement error: ±(0.04–0.06) A Voltage instability when the load current changes 0.03% Instability of the current when the voltage changes at a load of 0.2% Voltage ripple 0.5–1 mV Current ripple 0.1% Power consumption 90 - 320 VA Two 3-digit indicators (voltage, current) Adjustments are rough, smooth Dimensions 115x185x360 mm Weight: 3.7 kg (B5-78, B5-78/1, B5-78/2) 3 kg (B5-78/4) 5.5 kg (B5-78/6, B5-78/7) Power supply ~220 V A

Technical specifications: 4-channel automated system for measuring the parameters of semiconductors (including test structures on plates) Study of the VAC of 2, 3, 4-pole Parameters of each channel Source/meter:- U: ±2 V, ±30 V (200 mA), ±120 V (±10 mA), I: ±20, ±200 nA, ±2, ±20, ±200 Ma, ±2, ±10mA, (±120V), ±20, ±200 mA (±30V) Source and meter error U, I ± 0.5% Sensitivity of the U/I meter: 10 mv/ 0.1 pA Graphs, tables, texts, databases RS-232C interface, computer software Dimensions, weight: 450x266x444 mm, 23 kg Power supply: ~220V, 120 VA