5
H. Measuring Frequency
1. Connect the black test lead to the "
COM" terminal and the red test lead to the "
V
Ω
Hz
" terminal.
2. Set the rotary switch in "
Hz" position. Then press the "Hz%" button until "Hz" appears on the display.
3. Connect the test leads across the source or circuit to be tested.
4. Observe the reading on the display.
NOTE:
The input voltage should be between 1V rms and 10V rms. If the voltage is more than 10V rms,
the error of reading may be out of the specified accuracy range.
I. Measuring Duty Cycle
1. Connect the black test lead to the "
COM" terminal and the red test lead to the "
V
Ω
Hz
" terminal.
2. Set the rotary switch in "
Hz" position. Then press the "Hz%" button until "%" appears on the display.
3. Connect the test leads across the circuit to be tested.
4. Observe the reading on the display.
J. Continuity Test
1. Connect the black test lead to the "
COM" terminal and the red test lead to the "
V
Ω
Hz
" terminal.
2. Set the rotary switch in " " position. Then press the
RANGE button until the symbol " "appears on the display.
3. Connect the test leads across the circuit to be tested.
4. If the resistance is less than about 50
Ω
, the built-in buzzer will sound and the Light Indicator will light.
NOTE:
Before testing, disconnect all power to the circuit to be tested and discharged all capacitors thoroughly.
K. Diode Test
1. Connect the black test lead to the "
COM" terminal and the red test lead to the "
V
Ω
Hz
" terminal.
(Note: The polarity of the red lead is positive "
+") ..
2. Set the rotary switch in " " position. Then press the
RANGE button until the symbol " " appears on the display.
3. Connect red test lead to the anode of the diode to be tested an
4. Read the approximate forward voltage drop of the diode on the display. If the connections are reversed,
"
OL" will be shown on the display.
L. Auto Power Off
1.
If you have not operated the meter for about 15 minutes, the meter will sound 5 short beeps and a
long beep and tum off automatically.
2.
If you want to turn it on again, set the rotary switch to the "
OFF" position first and then set it to a desired position.
M. Backlight Button
1. Press and hold down this " " button for more than 2 secs to turn on the backlight.
To turn off the backlight, press this button.
N. RANGE Button
1. With the rotary switch in voltage or resistance measurement position, this "RANGE" button can be used to
switch between autorange mode and manual range mode as well as to select desired manual range.
2. With the rotary switch in the " " position, you can press this "
RANGE" button to switch between diode
and continuity test functions.
O. High Voltage Indicator
1. When the hold button is press this indicator should light briefly.
2. If the indicator fails to light when the hold button is pressed discontinue use of the meter.
3. When the AC voltage being measured is more than 750V or the DC voltage being measured is more than
1000V, this indicator will light as a warning.
4. During a continuity test this indicator will light if the resistance being measured is less than about 50
Ω
.
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/
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