DA-16D AC millivolt meterDetailed product description：

Overview
The DA-16D AC millivolt meter is an improved product of my DA-16 model, which has the advantages of high sensitivity, high input impedance, and high stability. The use of large signal detection in the circuit ensures good linearity of the instrument, and noise has little impact on measurement accuracy, so zero adjustment is not required during use.
This instrument has a wide frequency band, ranging from 10Hz to 2MHz, and uses a two-stage voltage divider to measure a wide voltage range, from 100 μ V to 300V. It is easy to use and is an indispensable testing equipment for factories, schools, and research institutions.
This millivolt meter is a Group II instrument in the GB6587 standard.

Working characteristics of two DA-16D AC millivolt meters
2.1 Voltage measurement range:
100μV～300V, Divided into 12 levels: 1mV, 3mV, 10mV, 30mV, 100mV, 300mV, 1V, 3V, 10V, 30V, 100V, 300V
2.2 Measurement level range: -80dB to+52dB (0dB=0.775V)
2.3 Tested voltage frequency range: 10Hz~2MHz
2.4 Inherent error: ≤± 3%
2.5 Working error: ≤± 5%
2.6 Frequency response error (based on 1kHz):
100Hz～1MHz≤±5% 10Hz～2MHz≤±10%
2.7 Input impedance:
At 1kHz, the input resistance is greater than 2M Ω, and the input capacitance (including wiring capacitance) is approximately 40pF
2.8 Working temperature: 0 ℃~40 ℃
2.9 Power Supply Voltage: 200V ± 10% 50Hz ± 4% Power Consumption 3W
2.10 Dimensions: 220 × 150 × 100 (mm), net weight approximately 3kg