4.3 DC Voltage Measurement
WARNING!
Maximum Input Voltage is 1000V AC/DC.
Do not attempt to take any voltage measurement that may
exceed to avoid electrical shock hazard or damage to this
meter.
(1)
Set the rotary switch at DC1000V position. Connect the
red test lead to “V/
” jack and the black test to the
“COM” jack.
(2)
Connect test leads across the source or loading being
measured and read voltage value on the LCD display.
4.4 AC Current Measurement
WARNING!
The input current should not exceed
indicated values, it is to avoid electrical shock hazard or
damage to this meter.
(1)
Set the rotary switch at AC1000A position.
(2)
Press the trigger to open transformer jaw and clamp one
conductor only, making sure that the jaw is firmly closed
around the conductor. Read current value on LCD
display.
(3)
If current under test is smaller, the lower range has to be
selected.
Note:
a) Disconnect the test lead with the meter for safety
before this measurement.
b) If two or more conductors are clamped, the meter
will stop operating.
c) The accurate reading will be obtained by the
conductor across center of the transformer jaws.
4.5 Resistance Measurement
WARNING!
When checking in-circuit resistance, be
sure the circuit under test has all power removed and all
capacitors have been discharged fully.
(1)
Set the rotary switch at 2k
position.
(2)
Connect the red test lead to “V/
” jack and the black test
to the “COM” jack.
(3)
Connect test leads across the resistor to be measured and
read LCD display.
(4)
When at open circuit or over-range condition, “1” will be
displayed.
4.6 Diode Measurement
(1)
Set the rotary switch at
position. When the input is
not connected, i.e. at open circuit, the figure “1” will be
displayed.
(2)
Connect the red test lead to “V/
” jack and the black test
to the “COM” jack.(The polarity of red lead is positive
“+”)
(3)
If diode test mode is selected, connect the red and black
leads to the anode and cathode of the diode, the forward
voltage drop of this diode will be displayed in mV.
(4)
The figure “1” will be displayed when the diode is
reversed under test.
4.7 Continuity Test
(1)
Set the rotary switch at
position. When the input is
not connected, i.e. at open circuit, the figure “1” will be
displayed.
(2)
Connect the red test lead to “V/
” jack and the black test
to the “COM” jack.
(3)
Connect tip of the test leads to the points where the
conduction needed. If the resistance is under 50
, the
buzzer will sound continuously.
Note:
The circuit to be tested must in power off status during
the continuity check, because any load signals may sound the
buzzer and mislead the result.
5. Maintenance
WARNING!
To avoid electrical shock hazard, before
open the case or the battery cover, be sure that test leads
have been disconnected from measurement circuits. Close
case and tighten screws completely before using the meter.
5.1 If the sign “
” appears on the LCD display, it indicates
that battery should be replaced. Remove the battery cover of
case, replace the exhausted battery with a new one.
5.2 Do not expose the instrument to direct sunlight, extreme
temperature or moisture.
5.3 Keep the meter cleaning. Do not use abrasives or
solvents on the meter, wipe periodically the case with a dry
cloth and detergent.