Audible Continuity; Transistor; Capacitance (Only For My74,My74B); Temperature (Only For My74,My74B) - Mastech MY70 Operation Manual

4.2.6 Audible continuity

Description
Function
When built-in buzzer
sounds, the resistance
to be tested is not more
than 50Ω.

4.2.7 Transistor

Measuring
Description
range
hFE approximation on
hFE
the display, (0 -1000)
Overload protection: Fuse (FF 400mA H 600V )
4.2.8 Capacitance (only for MY74, MY74B)
Measuring range Resolution
1pF
2nF
10pF
20nF
200nF 0.1nF
2μF
1nF
100μF
100nF
Overload protection: Fuse (FF 400mA H 600V)
4.2.9 Temperature (only for MY74, MY74B)
Measuring range Resolution
-20°C~0°C
1°C~400°C 1
°C
401°C~1000°C
Temperature indicator does not include thermocouple error.
Overload protection: Fuse (FF 400mA H 600V)
Test environment
Test current: about 1mA.
Open circuit voltage:
about 2.8V.
Test environment
Base current 10μA
Vce is about 2.8V
Accuracy
±(4.0% of reading + 3digits)
±(6.0% of reading + 10digits)
Accuracy
±(5.0% of reading + 4digits)
±(2.0% of reading + 3digits)
±(2.0% of reading + 5digits)
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4.2.10 DC current

Measuring range
Resolution
20μA 0.01μA
(for MY70, MY74B)
200μA
(only for MY70) 0.1μA
1μA
2mA (for MY70, MY74)
10μA
20mA
200mA 0.1mA
10A 10mA
Overload protection: fuse with measuring range of mA ( FF400mA
H 600V ); fuse with measuring range of 10A (FF10A H 600V).
Maximum input current: mA grade: 200mA DC or AC RMS;
10A grade: 10A DC or AC RMS
When measured current is greater than 10A, continuous
measurement time should not be more than 10 seconds. Stop the
current being measured after 15 minutes.

4.2.11 AC current

Measuring range
Resolution
20μA
0.01μA
(for MY70)
200μA
0.1μA
(only for MY70)
2mA
1μA
(for MY70, MY74)
10μA
20mA
200mA 0.1mA
10A 10mA
Overload protection: fuse with measuring range of mA (FF400mA
H 600V); fuse with measuring range of 10A (FF10A H 600V)
Maximum input current: mA grade: 200mA DC or AC RMS; 10A
grade: 10A DC or AC RMS
When measured current is greater than 10A, continuous
measurement time should not be more than 10 seconds. Stop the
current being measured after 15 minutes.
Frequency response: 40Hz-400Hz, sine wave RMS
Accuracy
±(2.0% of reading + 5digits)
±(0.8% of reading + 1digits)
±(1.5% of reading + 1digits)
±(2.0% of reading + 5digits)
Accuracy
±(2.0% of reading + 5digits)
±(1.0% of reading + 5digits)
±(1.8% of reading + 5digits)
±(3.0% of reading + 7digits)
(average response)
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