Mastech MS8238B User Manual page 8

4.2.4 Diode Test
Function Resolution
0.001V
Diode Test
Overload protection: 250V DC or AC (RMS)
4.2.5 Continuity
Description
Function
If measured resistance
is less than 50Ω,
buzzer will sound
Overload protection: 250V DC or AC (RMS)
4.2.6 DC Current
Measuring range
Resolution
200mA 0.1mA
10A 10mA
Overload protection:
mA jack: FF400mA H 600V fuse
10A jack: FF10A H 600V fuse
Max input current: mA jack: 200mA DC
10A jack: 10A DC
When measuring current exceeding 2A, do not measure
for longer than 2 minutes continuously.Wait 10 minutes
to continue measurement.
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Description
Forward DC current: 1mA
Reverse DC voltage: 2.9V
Display shows forward
voltage drop
Description
Open circuit
voltage: 2.9V
Accuracy
±(0.8% of reading +3 digits)
±(1.2% of reading +3 digits)
4.2.7 AC Current
Measuring range
Resolution
200mA 0.1mA
10A 10mA
Overload protection:
mA jack: FF400mA H 600V fuse
10A jack: FF10A H 600V fuse
Max input current: mA jack: 200mA AC rms
10A jack: 10A AC rms
When measuring current exceeding 2A, do not measure
for longer than 2 minutes continuously.Wait 10 minutes
to continue measurement.
4.2.8 Battery Test
Position
Resolution
12V 0.01V
9V
0.01V
1.5V
0.001V
Overload protection: F400mA H 600V fuse
4.2.9 NCV Test
• Hold down the NCV button and move the NCV sensor
at the top of the unit next to the object being tested.
• When voltage is detected (>110V AC rms) the buzzer
will sound and the NCV indicator will flash.
Accuracy
±(1.0% of reading +3 digits)
±(1.5% of reading +3 digits)
Accuracy
±(0.8% of reading +7 digits)
±(0.8% of reading +7digits)
±(3.0% of reading +5digits)
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