Operation
AC/ DC Voltage Measurement
1. Set the function switch to the “
AC/DCV
” position .
2. Press the “SESECT” button to measure DCV or ACV.
3. Touch the test probe tips to the circuit under test. Be sure to
observe the correct polarity (red lead to positive, black lead to
negative).
4. Read the voltage on the display
Resistance/Continuity Measurement
WARNING:
To avoid electric shock, disconnect power to the unit
under test and discharge all capacitors before taking any
resistance measurements. Remove the batteries and unplug the
line cords. Never measure continuity on circuits or wires that
have voltage on them.
1. Set the function switch to
the “ Ω •
))) ” position.
2. Connect the test leads to the circuit to be measured.
3. Read the value on the display.
4.
For Continuity tests, press the SELECT button until the “•
)))“
symbol appears in the display.
5.
If the resistance is less than 60 ohms, an audible tone
will sound.
Capacitance Measurement
WARNING:
To avoid electric shock, disconnect power to the unit
under test and discharge all capacitors before taking any
capacitance measurements. Remove the batteries and unplug
the line cords. Never measure continuity on circuits or wires that
have voltage on them.
1. Set the function switch to the “
Ω •))) ” position.
2. Press the SELECT button until “nF” appears in the display.
3. Press the RELATIVE button to zero the display
4. Connect the test leads to the capacitor to be measured.
5. Read the value on the display.
Diode Test
WARNING:
To avoid electric shock, do not test any diode that
has voltage on it.
1. Set the function switch to
“ Ω
•
)))
“position.
2. Press the SELECT button once to enter Diode Test. The “ “
symbol will appear in the display.
3. Touch the test probe tips to the diode or semiconductor junction
you wish to test. Note the meter reading.
4. Reverse the test lead polarity by reversing the red and black leads.
Note this reading.
5. The diode or junction can be evaluated as follows:
A. If one reading shows a value and the other reading shows OL,
the diode is good.
B. If both readings show OL, the device is open.
C. If both readings are very small, or 0, the device is shorted
AC/DC CURRENT MEASUREMENTS
1.
For current measurements up to 400mA AC/DC, set the
function switch to the
mA
position.
2.
Press the MODE button to indicate “
AC
” or “
DC
” on the
display.
3.
Remove power from the circuit under test, then open up the
circuit at the point where you wish to measure current.
4.
Touch the black test probe tip to the negative side of the
circuit.
Touch the red test probe tip to the positive side of the circuit.
5.
Apply power to the circuit.
6.
Read the current in the display.
Frequency/Duty Cycle Measurement
1. Set the function switch to the “
HZ/DUTY”
position.
2. Press the Hz/DUTY button once to display Duty Cycle %. Pressing
the button again will toggle the display to frequency (Hz).
3. Touch the test probe tips to the circuit under test. Be sure to
observe the correct polarity (red lead to positive, black lead to
negative).
4. Read the value on the display.
Features
Relative Button
The relative measurement feature allows you to make measurements
relative to a stored reference value. A reference voltage can be
stored and measurements made in comparison to that value. The
displayed value is the difference between the reference value and the
measured value.
1. Perform the measurement as described in the operating
instructions.
2. Press the RELATIVE button to store the reading in the display and
the "REL" indicator will appear on the display.
3. The display will now indicate the difference between the stored
value and the measured value.
4. Press the RELATIVE button to exit the relative mode.
Note:
The Relative function does not operate in the Frequency
function.
Data Hold Button
The Data Hold function allows the meter to “freeze” a measurement
for later reference
1. Press the “
DATA HOLD
” button to “freeze” the display, the
“
HOLD
” indicator will appear.
2. Press the “
DATA HOLD
” button to return to normal operation.
Auto Power Off
1. To save power, the display automatically turns off in 30 minutes.
2. Press the SELECT button to turn display back on.
3. To cancel Auto Power Off, set the function switch to the off
position. Hold down the SELECT button and turn the function
switch to the desired position and release the SELECT button after
3 seconds.
Maintenance
WARNING
: Disconnect the test leads from any source of voltage
before removing the back cover or the battery/fuse door. Do not
operate your meter until the rear housing is in place and fastened
securely.
RESETTABLE FUSE
1,
The fast acting, 0.4 A/250V resettable fuse will open if the current
limits of the meter are exceeded.
2, The fuse will automatically reset itself when the suspect current is
removed from the meter’s input
Replacing the Battery
1. Remove the rubber holster (if in place)
2. Remove Philips head screw and lift off the rear housing of the
meter.
3. Replace old battery with fresh CR2032 type button battery.
4. Replace the rear cover and secure the screw.
