The device warns that it is about to switch off by emitting 3 series of 2 audible beeps
and, if no action is taken, then emits a long beep and switches itself off.
When the multimeter has switched itself off automatically, it can be reactivated by
any action on a key or on the rotary switch.
Automatic switching off can be deactivated by holding down the "Hz", "MAX MIN", or
"R-H" key while switching on.
To eliminate the slight residual drain of the batteries in the sleep mode, it is always
best to switch the device "OFF".
2.4 DC voltage measurement (V
)
For optimum safety, measurements of voltages between 300V and 600V must be
made only on category III installations or on circuits of which the possible overvoltage
levels are known to be less than those of category III.
The instrument has 4 measurement ranges: 600mV, 6.0V, 60V, 600V.
The 600mV range can be used only in the manual range change mode, by repeated
presses on the "RANGE" key. The other ranges can be used in either the manual or the
automatic range change mode.
Withdraw the test probes and leads from their compartment.
Switch the instrument on in the "V" setting.
Apply the metallic part of the black test probe on the (assumed) negative part of the
circuit to be tested.
Apply the metallic part of the red test probe on the (assumed) positive part of the
circuit to be tested.
Read the measurement result (after stabilization).
Display of the "-" sign in front of the numerical value indicates that the value measured is
negative (the test probes are reversed with respect to the polarity of the voltage)
2.5 AC voltage measurement (V
)
For optimum safety, measurements of voltages between 300V and 600V must be
made only on category III installations or on circuits of which the possible overvoltage
levels are known to be less than those of category III.
The instrument has 4 measurement ranges: 600mV, 6,0V, 60V, 600V.
The 600mV range can be used only in the manual range change mode, by repeated
presses on the "RANGE" key. The other ranges can be used in either the manual or the
automatic range change mode.
Withdraw the test probes and leads from their compartment.
Switch the instrument on in the "V" setting.
Apply the metallic part of the black test probe on the part of the circuit to be tested
(assumed) closest to the earth potential.
Apply the metallic part of the red test probe on the part of the circuit to be tested
(assumed) farthest from the earth potential.
In the "SCAN" mode, if the voltage to be measured is greater than 0.5V, the
multimeter automatically determines if an AC or DC measurement must be made.
If necessary, press the "SEL" key briefly to force an AC voltage measurement (display
of the "
" symbol instead of "
")
Read the measurement result (after stabilization).
- 7 -
2.6 Frequency measurement (Hz)
For optimum safety, measurements of voltages between 300V and 600V must be
made only on category III installations or on circuits of which the possible overvoltage
levels are known to be less than those of category III.
The instrument has 3 measurement ranges: 600,0Hz, 6,000kHz and 60,00kHz.
Measurement of the frequency of the voltage measured: start the AC voltage
measurement method, then press the "Hz" key (display of the "Hz" symbol instead
of "V").
Read the measurement result after stabilization.
2.7 Resistance measurement
(Ω)
Resistance, continuity, diode test, and capacitance measurements must be made
only on circuits completely disconnected from any power supply, and after any capacitors
have been discharged.
The instrument has 6 measurement ranges: 600,0Ω, 6,000kΩ, 60,00kΩ, 600,0kΩ,
6,000 MΩ and 60,00 MΩ. All of the ranges can be used with either automatic or manual
range change.
Withdraw the test probes and leads from their compartment.
Switch the instrument on and set to "
".
Apply the metallic tips of the test probes to the terminals of the resistance or of the
circuit to be tested.
In the "SCAN" mode, the multimeter automatically determines the nature of the
quantity to be measured.
If necessary, press the "SEL" key briefly to change to the desired measurement
mode.
Read the measurement result (after stabilization).
NB: Touching the elements or circuit during the measurement may lead to erroneous
results. For resistance measurements on nonlinear circuits, it may be necessary to select
the measurement mode and the range to be used manually.
2.8 Continuity measurement
(Ω)
Resistance, continuity, diode test, and capacitance measurements must be made
only on circuits completely disconnected from any power supply and after any capacitors
have been discharged.
The instrument indicates continuity by emitting a steady sound when the resistance
measured is less than 30Ω. The value displayed is the value measured in ohms.
Withdraw the test probes and leads from their compartment.
Switch the instrument on and set to "
".
Apply the metallic tips of the test probes to the terminals of the resistance or of the
circuit to be tested.
In the "SCAN" mode, the multimeter can automatically determine and select the
continuity mode when the resistance measured remains low; otherwise press
the "SEL" key briefly until the continuity symbol "
" appears
Read (if necessary) the measurement result (after stabilization).
- 8 -
2.9 Diode measurement
(Ω)
Resistance, continuity, diode test, and capacitance measurements must be made
only on circuits completely disconnected from any power supply, and after any capacitors
have been discharged.
The instrument indicates the voltage across the terminals of the semiconducting junction.
Withdraw the test probes and leads from their compartment.
Switch the instrument on and set to "
".
Apply the metallic tips of the test probes to the terminals of the diode or circuit to
be tested.
In the "SCAN" mode, the multimeter can automatically determine and select the
diode test mode when the voltage measured is less than approximately 0.8V,
otherwise, press the "SEL" key briefly until the diode test symbol "
" appears.
The test probes must be applied to the terminals of the diode or junction to be tested
according to the following polarities.
1) forward direction (conducting): apply the black probe to the cathode and the red
probe to the anode. Read the measurement result (after stabilization), see figure A
(the threshold voltage of a silicon diode is between 0.5V and 0.7V; it is between 0.2
and 0.3V for a germanium diode. High-voltage diodes, some Zener diodes, and LEDs
cannot be tested by this method).
2) reverse direction (non-conducting): apply the black probe to the anode and the red
probe to the cathode. Read the measurement result (after stabilization), see figure B
(a diode or junction in good condition causes the display of "OL").
With some types of diode, a measured value outside the stated voltage ranges
does not necessarily mean that the diode or junction is defective.
3. CHARACTERISTICS
3.1 General conditions
Quantity of influence
Reference conditions
Temperature
23°C ±5°C
Relative humidity
45% to 75%
Supply voltage
2,8V ±0,3V
Frequency range of the applied signal
45-400Hz
Sine wave
pure
Peak factor of the applied AC signal
√2
AC magnetic field
none
Electric field
none
- 9 -
3.2 Characteristics under the conditions of use
Sampling rate: approximately 3 measurements per second
The uncertainties are expressed in ± (x% L + y digit).
3.2.1
DC voltage measurement
Range
Resolution
Measurement uncertainties
Input resistance
600.0mV
0.1mV
1.0%+3
approx. 10 MΩ
6.000V
0.001V
60.00V
0.01V
600.0V
0.1V
3.2.2
AC voltage measurement
Range
Resolution
Measurement uncertainties
Input resistance
45~60Hz
60~400Hz
600.0mV
0.1mV
1.5%+5
－
approx. 10 MΩ
6.000V
0.001V
1.5%+5
60.00V
0.01V
600.0V
0.1V
3.2.3
Resistance measurement
Range
Resolution
Measurement
uncertainties
Voltage
maximum
applicable
600.0Ω
0.1Ω
1.0%+5
600V
6.000kΩ
0.001kΩ
60.00kΩ
0.01kΩ
600.0kΩ
0.1kΩ
6.000MΩ
0.001MΩ
2.0%+5
60.00MΩ
0.01MΩ
3.0%+5
- 10 -
