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Technical specifications: Frequency range, from 0.1 Hz to 1 Frequency range, from 0.1 Hz to 1 MHz Frequency setting error, ± 1 % Signal amplitude: - at a load of 600 ohms - without load, not less than 5 V (10 V span) not less than 10 V (20 V span)Smooth signal attenuation, at least 20 dB Frequency stability in 15 minutes, no more than 0.5% Hz Frequency setting error, ± 1 % Signal amplitude: - at a load of 600 ohms - without load, not less than 5 V (10 V span) not less than 10 V (20 V span) Smooth signal attenuation, at least 20 dB Frequency instability in 15 minutes, no more than 0.5 %

Technical specifications: DC voltage , Measuring range, 10 MV - 1000 V Measurement error, ± 0.03% AC voltage , Measuring range, 1 mV - 750 V Measurement error, ± 0.4% Frequency range, 20 Hz- 100 kHz Direct current , Measuring range, 1 mkA - 2 A (B7-91/1) Measuring range, 1 mkA - 20 A (B7-91) Measurement error, ± 0.03%

Technical specifications: Conductivity (Gp) - 10-11 – 10 Cm Resistance (Rs, Rp, Xs, |Z|) 10-5 – 109 Ohms Capacity (Ss, Cp) - 10-15 – 1 F Inductance (Ls, Lp) 10-11 – 104 Gn Dobrotn.(Q), loss angle tangent (tg) 10-4 – 104 Phase shift angle of the resistance set -180° – +180° Leakage current (I) - 10-7 – 10-3 A Measurement error - ± 0.15 % Operating frequencies – 25 Hz – 1 MHz Power consumption - 10 VA Overall dimensions - 225x110x35 mm Weight - 0.8 kg

Technical specifications: Conductivity (G) - 10-9 – 10 Cm Resistance (R, X, |Z|) - 10-4 – 108 ohms Capacity (S) - 10-14 – 10-1 F Inductance (L) - 10-8 – 104 Gn Q factor (Q), loss angle tangent (tg) 10-3 – 103 Phase angle. shift comp. resistance -180° - +179.9° Leakage current (I) - 10-7 – 10-3 A Measurement error - 0.15 % Operating frequencies – 0.1; 1; 10 kHz (± 0.02%) Measurement levels. signal (SKZ) – 0.04; 1 V The offset voltage on the measured object is 0 – 63 V The output resistance of the source. izmer. signal – 100 ± 20 ohms The time of one measurement is 60, 600 ms, 6 s Power consumption - 20 VA Overall dimensions - 90x265x317 mm Weight - 3.5 kg

Technical specifications: Output constant voltage, 0 - 3 kV; 0 - 10 kV Output AC voltage, 0 - 3 kV; 0 - 10 kV Measurement of leakage current, from 0 to 100 Ma The amplitude value of the output voltage ripples relative to the set voltage at a load current of 1 mA, ≤ 5% The error of setting the output voltage, ≤ 4% Protection tripping current, up to 50 mA Output power, 500W Overall dimensions (HxWxD), 280x480x475 mm Weight, 36 kg Operating conditions , Operating temperature, from +5 to + 40 °C Humidity, 80% at 25 °C

Technical specifications: Measuring range 20 mv-1000 V Measurement error ± (0.03% +5 E.M.R.) AC voltage Measuring range 1 mV - 700 V Measurement error ± (0.3% +200 E.M.R. - 4% +800 E.M.R.) Frequency range 20 Hz-100 kHz Direct current Measuring range 1 mA - 2 A Measurement error ± (0.12% +10 E.M.R.) Alternating current Measuring range 10 mA - 2 A Measurement error ± (0.6% +300 E.M.R.) Frequency range 20 Hz - 5 kHz

General characteristics: USB 2.0 interface, SCPI support Power supply ~ 230 V, 35 V*A Operating temperature range from minus 10 C to + 40 C Dimensions; weight 325×270×125× mm; 4 kg