Major tech MTD30 Руководство по эксплуатации - Страница 4
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2.2.5 Diode and Audible continuity test
Range
Description
Display read
approximately
forward voltage
of diode
Built-in buzzer
sounds
resistance is
less than 50Ω
Overload protection: F0.5A/600V fuse
2.2.6 Battery test
Range
Accuracy
1.5V
± ( 5.0%+5 )
9V
Overload protection: F0.5A/600V fuse
3.
OPERATION
3.1
DC Voltage Measurement
1)
Set the selector switch to desired "V
2)
Measure the voltage by touch the test lead tips to the test circuit where the
value of voltage is needed.
3)
Read the result from the LCD panel. The polarity of the red lead connection will
be indicated along with the DC voltage value.
Note:
a)
If the voltage range is not known beforehand, set the selector switch to high
range and work down.
b)
When "1" or "-1" is display, over-range is being indicated and the selector switch
must be set to a higher range.
c)
Don't apply more than 500V DC or AC rms to the input, indication is possible at
higher voltage but there is danger of damaging the internal circuit.
d)
Use extreme caution to avoid contact with high tension circuits when measuring
high voltage.
3.2
AC Voltage Measurement
1)
Set the selector switch to desired "V
2)
Measure the voltage by touch the test lead tips to the test circuit where the
value of voltage is needed.
Test condition
Forward DC current
approx. 10μA
Reversed DC voltage
approx. 1.8V
Open circuit voltage
if
approx. 1.8V
Load current
50mA
5mA
Resolution
10mV
10mV
" position.
" position.
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