Test – Leader LMV-181-A Millivolt Meter
The Leader LMV-181-A is an AC millivoltmeter designed for a wide range of general-purpose single or dual channel measurements. Here are some key specifications:
- Sensitivity: 100 µV
- Voltage Range (Full Scale): 1 mV to 300 V in 12 ranges
- Frequency Response: 5 Hz to 1 MHz ±10%, 20 Hz – 200 kHz ±2%
- Input Impedance: 10 MΩ, 50 pF
- Maximum Input: 600 V (dc + ac peak)
- Meter Calibration: Millivolts and dB (0 dBV = 1 V and 0 dBm = 0.775 V)
- Accuracy: ±2% full scale at 1 kHz or 400 Hz
- Amplifier Output: 1 V rms (no load) corresponds to a full-scale indication on each range
- Output Impedance: 600 Ω ±20%
- Distortion: ≤1% full scale at 1 kHz
- Power Requirements: 100, 120, 220, 240 V ac ±10%
- Physical Size: 132 x 150 x 250 mm
- Weight: 2 kg
The LMV-181-A is noted for its high sensitivity and wide bandwidth, making it suitable for applications such as stereo audio measurements, communications, IF and ultrasonic circuits, and systems1. It can also be used as a sensitive, accurate instrument preamplifier due to the flat bandwidth of the amplifier output terminals1.
For more detailed information, you can refer to the instruction manual available online2.
There is now a second unit for stereo use
the second unit is identical with the exception of a standard BNC connector for the input
Conclusions
Concluding comments
1. This page was done engineering notebook style – Someday in the future it might be added to and typed up in a spreadsheet
2.This is a current system ‘Standard’ subject to revision.
3. There is a page refering to the Fluke DC meter and the Owon DMM also that are referanced in this article
Okay this is good