Mastech MS8238B, User Manual

Page: 8 / 10

4.2.6 DC Current
Resolution
Accuracy
200mA 0.1mA
10mA 10A
Measuring range
±(0.8% of r3 digits)
±(1.2% of r3 digits)
If measured resistance
is less than 50
Ω ,
buzzer will sound
4.2.5 Continuity
Function Description
Description
Open circuit
voltage: 2.9V
Overload protection: 250V DC or AC (RMS)
Forward DC current: 1mA
Reverse DC voltage: 2.9V
Display shows forward
voltage drop
4.2.4 Diode Test
Function Description Resolution
0.001V Diode Test
Overload protection: 250V DC or AC (RMS)
12 13
4.2.7 AC Current
Resolution
Accuracy
200mA 0.1mA
10mA 10A
Measuring range
±(1 . 0% of r3 digits)
±(1.5% of r3 digits)
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.
4.2.8 Battery Test
Resolution
Accuracy
12V 0.01V
0.01V 9V
Position
±(0.8% of r7 digits)
±(0.8% of r7digits)
1.5V 0.001V
±(3.0% of r5digits)
Overload protection: F400mA H 600V fuse
4.2.9 NCV Test
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.
• 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.