Analysis of common problems of spectrum analyzer

Digital multimeters are fast and high accuracy, multi-function and auto measurement instrument for voltage, current, resistance, frequency. The simple front panel and convenient operation support the demand in measurement. 

Digital multimeter is a precision electronic equipment, do not arbitrarily replace the line, and note the following:

1.do not connect higher than 1000V or DC voltage higher than 700V ac rms voltage.

2.not in position when Ω and the voltage source access the function switch.

3.the battery is not installed or rear cover is not on tight, do not use this form.

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