14 15
When the battery voltage is less than 4V, it will show ‘ ’.
But if you use back light at the same time, maybe ‘ ’
will come up even if the battery voltage is more than 4V,
because the working current is higher and the voltage
will decline. (When ‘ ’ shows, the accuracy of the
measurement can not be assured.) You need not replace
the battery. When you use normally (back light is not
using), ‘ ’ will not show up. You need replace it till ‘ ’
show again.
4.7AUTO Power Off
If there's no any operation within fifteen minutes after
power is on, meter will auto power off with five short
sounds and a long sound in a minute.
After auto power off, if stir the transform switch or put
down any button of 'FUNC.', 'DATA-H', 'MAX.H', 'RANGE',
meter will recover the working condition.
If presses the ‘DATA-H’ when power is on, auto power
off disable.
4.8 Preparation For Measurement
4.8.1 Put on the ‘ON/OFF’ button. If the battery voltage
is less than 3.8V, display will show ‘ ’, the battery
should be changed at this time.
4.8.2 The ‘ ’besides the input jack shows that the input
voltage or current should be less than specification
on the sticker of the meter to protect the inner
circuit from damaging.
4.8.3 Select a function and a range for the item to be
measured through rotating the transform switch
accordingly. When the value scale to be measured
is unknown beforehand, set the range selector at
the highest position.
4.9 Measuring DC Voltage
You can't input the voltage which more than 600V
DC, it's possible to show higher voltage, but it's
may destroy the inner circuit.
Pay attention not to get an electric shock when
measuring high voltage.
WARNING
4.9.1 Connect the black test lead to the COM jack and
the red test lead to the INPUT jack.
4.9.2 Set the transform switch at the V range position.
4.9.3 Put down the 'FUNC.' to enter the DC
measurement. Auto range or manual range can
be transformed by putting the 'RANGE'.
4.9.4 Connect test leads across the source or load
under measurement.
4.9.5 You can get a reading from LCD display.
The polarity of the red test lead connection will
be indicated.
Note:
• At the little voltage range, the meter will show
unsteady reading when test leads haven't reach the
circuit, it's normal because the meter is very
sensitivity. When test leads touch the circuit, you can
get the true reading.
• At the manual range mode, when only the figure 'OL'
is displayed, it indicates overrange situation and the
higher range has to be selected.
4.8.4 When connection, first connect to the public testing
line, then to the electriferous testing line. When
you'll remove it, you should remove the
elecriferous one.
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