Wireless Frequency Measuring Instrument
A frequency meter is an instrument that displays the frequency of a periodic electrical signal. ... Changes in the frequency to be measured cause a change in this balance that can be measured by the deflection of a pointer on a scale. Deflection-type meters are of two types, electrically resonant circuits and ratiometers.
|Display||3.2 Inch TFT(320*240)|
|Power Supply||Two 3.7V Rechargeable Lithium Batteries|
|Operation Style||Film Button|
|Input Power||4.2-40 Vpp|
Q: What should I pay attention to during the test?
A: During the test, the hand can't touch, it will affect the capacitance.