HTC DM 81, User Manual

Page: 4 / 8

4
4.
AC Current
-- Overload Protection: 200mA/250V fuse,
20A range without fuse
-- Max Input Current: 20A (≤10 seconds)
-- Measured by the voltage drop: full range
as 200mV
-- Frequency Range: 40Hz ~ 400Hz
-- Response: average, calibrated in RMS of sine wave
5.
Resistance
Range Resolution Accuracy
200Ω 0.1Ω
±
（
1.5%+5
）
2KΩ 1Ω
20KΩ 10Ω
200KΩ 100Ω
2MΩ 1KΩ
20MΩ 10KΩ ±
（
2%+5
）
200MΩ 100KΩ ±
（
5%+5
）
-10
-- Overload Protection: 220V effective value
-- Open circuit Voltage:
＜
1V (200MΩ@ range 2.8V)
-- 200MΩrange short display appox.10 digits, measuring value = displayed value – 10 digits
6.
Capacitance
Range Resolution Accuracy
20nF 10pF
±
（
3%+10
）
200nF 100pF
2μF 1nF
200μF 10nF ±
（
5%+10
）
-- Overload Protection: 36V or AC peak value
7.
Transistor hFE Test
Range Description Measuring Condition
hFE
Display
：
0
～
1000β
Ibo≈10μA,
Vce≈2.8V
Range Resolution Accuracy
2mA 1μA ±
（
2%+5
）
200mA 100μA ±
（
2.5%+5
）
20A 10mA ±
（
3%+7
）