Tenma 72-7780, Руководство пользователя

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Input impedance: about 10M Ω .
Results might be unstable at mV range when no load is connected. The value
becomes stable once the load is connected. Least significant digit ≤ ±3
Max input voltage: ±600V, when the voltage ≥ 600V, "OL” symbol appears and the
buzzer goes off.”
2. AC voltage
Range Resolution Accuracy
60.00mV 0.01mV
±(1.0%+3)
600.0mV 0.1mV
6.000V 0.001V
±(0.8%+3) 60.00V 0.01V
600.0V 0.1V
600V 1V ±(1.0%+3)
VFC 200.0V~600V 0.1/1V ±(4.0%+3)
Input impedance: about 10M Ω
Display true RMS. Frequency response: 45Hz ~1KHz (LPF 45~400Hz)
Accuracy guarantee range: 5 ‐ 100% of the range, shorted circuit allows least
significant digit ≤ 10
Crest factor at Max range=3.0 (excluding 600V range, crest factor=1.5)
Max input voltage: 600Vrms
3. Resistance measurement.
Range Resolution Accuracy
600.0 Ω 0.1 Ω ±(1.0%+2)
6.000k Ω 0.001k Ω
±(0.8%+2) 60.00k Ω 0.01k Ω
600.0k Ω 0.1k Ω
6.000M Ω 0.001M Ω ±(1.2%+3)
60.00M Ω 0.01M Ω ±(1.5%+5)
Measurement result = reading of resistor – reading of shorted test leads
Open circuit voltage=1V (Current=0.4mA)
Overload protection: 600V ‐ PTC
4. Continuity, Diode
Position Resolution Remark
0.1 Ω
Set Value:
Open circuit: resistance ≥ 150 Ω , no beep.
Well ‐ connected circuit: resistance ≤ 10 Ω , continuous
beeps.
0.001V
Open circuit voltage :3.2V
Silicon PN junction voltage: 0.5 ~ 0.8V.
Overload protection: 600V ‐ PTC