3 3/4 Digits Auto Range DMM with Capacitance and Frequency
OPERATION MANUAL
1. SAFETY RULES
This meter is designed and tested in accordance with EN publication 61010-1, pollution
degree II and installation category (overvoltage category) III 600V.
This meter has been tested according to the following EC Directives
♦89/336/EEC Electromagnetic Compatibility, EN61326
♦73/23/EEC Product safety law of Low Voltage Directive, EN61010-1
This meter is designed to be indoor use at temperature 5°C to 40°C and altitude up to
2,000m.
To ensure that the meter is used safely, follow all safety and operating instructions in
this operation manual. If the meter is not used as described in this operation manual,
the safety features of this meter might be impaired.
2. INTERNATIONAL SYMBOLS
3. SPECIFICATIONS
3.1 General Specifications
3 3/4 digit LCD with max. reading of 3999.
Automatic, (-) negative polarity indication.
Only the MSD “OL” is displayed.
9V NEDA 1604, JIS 006P, IEC6F22 battery x 1
194(L) x 93(W) x 39.4(H)mm.
Approx. 400g. (Including battery).
3.2 Electrical Specifications
Accuracies are ±(% of reading + number of least significant digits) at 23°C ±5°C, <75% RH.
DC Voltage
10MΩ
600V DC/AC rms
(< 30 sec.)
±(0.8%+1)
400mV 0.1mV ±(1.0%+2) 10MΩ
600V DC/AC rms
(< 30 sec.)
AC Voltage
Range Resolution
Accuracy
40~
400Hz
10MΩ600V DC/AC rms
(< 30 sec.)
±(1.2%+3d)
DC Current
±(1.0% + 5d)
400mV Fuse 500mA/600V
AC Current
Range Resolution
Accuracy
±(1.2% + 5d)
400mV 40-400Hz Fuse
500mA/600V
Resistance
Range Resolution
Accuracy
Overload Protection
±(1.0%+2d) <700mV 600V DC/AC rms
(< 30 sec.)
Diode Test
Forward Volt. Drop Test Current
Overload Protection
0-1.000V
Max. 1.5V
600V DC/AC rms
(< 30 sec.)
Continuity
Test
Test range Test Current
Overload Protection
Buzzer sounds when
resistance value ≦50Ω
Approx. 1mA Approx. 0.5V
600V DC/AC rms
(< 30 sec.)
Capacitance
±(3.0%+5d) 600V DC/AC rms
(< 30 sec.)
Frequency
±(1.5% + 5d)
Vpp = 600mV
600V DC/AC rms
(< 30 sec.)
*ACmV only available in manual-range
4. PANEL DESCRIPTIONS
1. LCD display
2. HOLD key
3. Multifunction key
4. RANGE key
5. Yellow key
6. Multifunction Selector
7. Current input terminal (10A)
8. Input terminal
9. Current input terminal (uA, mA)
10. Common input terminal
5. OPERATION
WARNING
1) When measuring voltage ensure that the instrument is not connected or switched to a
current, resistance, frequency, duty cycle, capacitance or diode/ continuity check range.
Always ensure that the correct terminals are used for the type of measurement to be
made.
2) Use extreme care when measuring voltage above 50V, especially from sources where
high energy exists.
3) Avoid making connections to “live” circuits whenever possible.
4) Before performing resistance, capacitance, diode or continuity test, ensure that the circuit
under test is de-energised.
5) Always ensure that the correct function and range is selected. If in doubt about the correct
range, start with the highest and work downwards.
6) Extreme care should be taken when using the instrument to conjunction with a current
transformer connected to the terminals. High voltage may be produced at the terminals if
an open circuit occurs.
7) Ensure that the test leads and prods are in good condition with no damage to the
insulation.
8) Take care not to exceed the overload limits as given in the specifications.
5.1 DC and AC voltage measurement
1. Connect the black test lead to the “COM” terminal and red test lead to the “
”
terminal.
2. Set the multifunction selector to position and connect the test leads across the
source or load under measurement.
3. Using the yellow key to select AC voltage mode. The icon “~“ must be shown on the
display.
4. Connect the test leads across the source or load under measurement.
5.2 DC milli-voltage measurement
1. Connect the black test lead to the “COM” terminal and red test lead to the “
”
terminal.
2. Set the multifunction selector to
position and connect the test leads across the
source or load under measurement.
3. Connect the test leads across the source or load under measurement.
5.3 DC and AC current measurement
1. Connect the black test lead to the “COM” terminal and red test lead to the “
”
terminal for measurement up to 400mA.
2. Set the multifunction selector to desired current range position.
3. Connect the test leads in series with the current source to be measured.
4. Using the yellow key to select AC current mode. The icon “~“ must be shown on the
display.
5. For current measurement from 400mA to 10A (fused) follow generally the above
procedure but connect the red test lead to “10A” terminal.
CAUTION: Max. input over-load: 600V rms < 10sec.
5.4 Resistance measurement
1. Connect the black test lead to the “COM” terminal and red test lead to the “
”
terminal.
2. Set the multifunction selector to position.
3. Connect the test leads across the circuit to be tested.
CAUTION: Ensure that the circuit to be tested is “dead”.
Max. input overload: 600V rms < 30sec.
5.5 Diode test
1. Connect the black test lead to the “COM” terminal and red test lead to the “
”
terminal.
2. Set the multifunction selector to position.
3. Using the yellow key select a function. The icon “ “ must be shown on the display.
4. Push on the meter and connect the black and red test leads to the cathode (-) and anode
(+) ends of the diode to be tested respectively.
5. Read the forward voltage drop (junction) value from the display. When the forward biased
is open, the display will shows overload ‘.OL’ .
CAUTION: Max. input overload: 600V rms < 30sec.
5.6 Continuity test
1. Connect the black test lead to the “COM” terminal and red test lead to the “
”
terminal.
2. Set the multifunction selector to position.
3. Using the select key select a function. The icon “ “ must be shown on the display.
4. Connect the test leads across the circuit to be tested, if the resistance less than 50Ω,
buzzer will be activated.
CAUTION: Max. input overload: 600V rms < 30sec.
5.7 Frequency measurement
1. Connect the black test lead to the “COM” terminal and red test lead to the “ ”
terminal.
2. Set the multifunction selector to Hz % position
