Digital AC Millivoltmeter Millivolt Meter With Minimum Input Voltage 10mVrms

Features:

1.Adopts 8-bit high-grade microcontroller and highly stable A/D converter. 

2.Can be used as a voltmeter and frequency meter, one machine for two purposes 

3.Adopt electronic switch 

 4.Miniaturized chassis, beautiful appearance, easy to operate 

5.High precision, high brightness, high stability, low power consumption, cost-effective 

6.Standard RS232 interface


Technical Specifications：

Technical Date

Frequency range of measured voltage

5Hz~3MHz

Measured voltage range  

100µVrms~400Vrms    

dB measurement range: -80dB~52.04dB (0dB=1Vrms)

dBm measurement range: -77dBm~54.25dBm (0dBm=1mW, 600Ω)

Voltage Measurement Methods

 Manual or automatic

Voltage measurement range

 4mVrms/40mVrms/400mVrms/4Vrms/40Vrms/400rms 

Measurement of 1kHz voltage

Operating Error

 

100Hz～100kHz ±2%   reading ±8 words

50Hz～500kHz ±3%    reading ±10 words

10Hz～2MHz ±4%     reading ±15 words

5Hz～3MHz ±6%      reading ±20 words

dB and dBm measurements

Error Reference Voltage Measurement Error

 Input Resistance

10MΩ

 Input Capacitance

Not more than 30PF

 Noise

0 words for input short circuit

Frequency meter (optional)  

Frequency measurement range: 5Hz~3MHz

Input Characteristics

Minimum input voltage: 10mVrms

Maximum allowable input voltage: 400Vrms with attenuation, 4Vrms without attenuation

Low-pass filter: up to about 100kHz; in-band attenuation ≤ 3dB; out-of-band attenuation ≥ 30dB

Gate time: 100ms

Attenuator: about 100 times

display digit

5 bits

Time base

Better than 5×10-5

Coupling method

AC coupling

Connector

Standard RS232

Dimension

210×80×230(mm)

Weight

2kg