Millivolt Meter Intelligent Digital AC Millivoltmeter
Voltmeter Frequency Meter
Overview:
This is a general-purpose intelligent digital AC millivoltmeter, which adopts the amplifier - detector working principle and high-grade microcontroller control technology, suitable for measuring frequency 5Hz ~ 3MHz, voltage 100uVrms ~ 400Vrms sine wave RMS voltage. The instrument adopts green LED display, clear reading, good vision, long life. Meanwhile, it has the advantages of high measurement accuracy, fast measurement speed, high input impedance and small frequency response error. The whole machine has low power consumption, small volume, light weight, with automatic/manual measurement function, simultaneously displaying the voltage value and dB/dBm value, as well as the range and channel status, the display is clear and intuitive, easy to use, can be widely used in factories, laboratories, scientific research units, troops and schools, is the voltage measurement and testing of the necessary basic instruments.
The instrument can be equipped with 5Hz~3MHz frequency meter plug-in; it can be used as 5Hz~3MHz frequency meter, which makes the instrument can be used in two ways.
Features :
Parameter :
Name | Technical indicators | ||
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 method | Manual or automatic | ||
Voltage measurement range | 4mVrms/40mVrms/400mVrms/4Vrms/40Vrms/400rms | ||
Measurement of 1kHz voltage | 100Hz~100kHz ±2% Reading ±8 characters |
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Operating Error | 50Hz~500kHz ±3% Reading ±10characters |
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| 10Hz~2MHz ±4% Reading ±15characters |
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| 5Hz~3MHz ±6% Reading ±20 characters |
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Measurement of dB and dBm | Error Reference Voltage Measurement Error | ||
Input resistance | 10MΩ | ||
Input capacitance | Not more than 30PF | ||
Noise | 0 words when input is short-circuited | ||
Frequency meter (optional) | Frequency measurement range：5Hz~3MHz | ||
Input Characteristics | Minimum input voltage:10mVrms | ||
Maximum Allowable Input Voltage: 400Vrms with attenuation, 400Vrms without attenuation. | |||
Low-pass filter: Cut-off frequency approx. 100kHz; In-band attenuation ≤3dB;Out-of-band attenuation z30dB | |||
Gate time: 100ms | |||
Attenuator: Approx. 100 times | |||
Display digits | 5 | ||
Time base | Better than 5×10-5 | ||
Coupling mode | AC coupling | ||
Interface | RS232 as standard | ||
External Dimensions | 210×80×230（mm） | ||
Weights | 2kg | ||
Standard Configuration:
Optional Configurations: