Mastech MY70, Operation Manual

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4.2.6 Audible continuity
Function Test environment
Description
When built-in buzzer
sounds, the resistance
to be tested is not more
than 50
Ω .
Test current: about 1mA.
Open circuit voltage:
about 2.8V.
4.2.7 Transistor
Test environment
Description
Measuring
range
hFE
hFE approximation on
the display, (0 -1000)
Base current 10 μ A
Vce is about 2.8V
Overload protection: Fuse (FF 400mA H 600V )
4.2.8 Capacitance (only for MY74, MY74B)
Measuring range Resolution Accuracy
±(6.0% of r 10digits)
±(4.0% of r 3digits)
2nF
20nF
2 μ F
100 μ F
1pF
10pF
0.1nF
1nF
100nF
200nF
Overload protection: Fuse (FF 400mA H 600V)
4.2.9 Temperature (only for MY74, MY74B)
Measuring range Resolution Accuracy
±(5.0% of r 4digits)
1 °C 1°C~400°C
-20°C~0°C
401°C~1000°C
±(2.0% of r 3digits)
±(2.0% of r 5digits)
Temperature indicator does not include thermocouple error.
Overload protection: Fuse (FF 400mA H 600V)
4.2.10 DC current
Measuring range
Resolution
Accuracy
±(2.0% of r 5digits)
±(0.8% of r 1digits)
20 μ A
(for MY70, MY74B)
200 μ A (only for MY70)
20mA
200mA
2mA (for MY70, MY74)
10A
0.01 μ A
0.1 μ A
1 μ A
10 μ A
0.1mA
10mA
±(1.5% of r 1digits)
±(2.0% of r 5digits)
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
Accuracy
±(2.0% of r 5digits)
±(1.0% of r 5digits)
20 μ A
(for MY70)
20mA
200mA
2mA
(for MY70, MY74)
10A
0.01 μ A
0.1 μ A
1 μ A
10 μ A
0.1mA
10mA
±(1.8% of r 5digits)
±(3.0% of r 7digits)
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
(average response)
200 μ A
(only for MY70)