3
DIGITAL MULTIMETER
Warning!
These operating instructions
contain the information and warnings required
for the safe use and maintenance of the
unit. Read and understand the instructions
for use before using the device. Failure to
understand the instructions or observe the
warnings can result in serious personal injury
or property damage.
Safety Markings
Important warning Read the contents
of the instruction manual.
Dangerous voltage can be present
Grounding
Double insulated
(Contact protection class II)
During Use
• If the unit is used near strong electromagnetic
interfe-rence, please note that the
multimeter’s operation can become unstable
or it may indicate malfunction.
• Never exceed the safety limits specified
in the instructions for each measurement
range.
• When the multimeter is connected to a circuit,
avoid contacting it with extraneous devices.
• Do not use the multimeter in situations
where the voltage can exceed 600 V.
• If the measurement limits are unknown,
please set the limit selection switch to the
highest position.
• Before turning the limit selection switch,
disconnect the probe cable from the
measurement circuit.
• When performing measurements on TV sets
or circuits with high AC, always remember
that there might be high amplitude voltage
on the test points, which can damage the
multimeter.
• If the voltage to be tested exceeds the
effective value of 60 V DC or 30 V AC, work
carefully in order to avoid sustaining an
electric shock.
• Do not use the multimeter in the presence
of flammable gas, vapours or dust.
• Before each use, check the unit in order
to ensure pro-per operation (e.g., using a
known voltage source).
General description
This measuring instrument features a 3½
digit, 7-segment display, which is 19.5 mm
tall for better legibility. It can be used to
measure direct current, DC voltage, AC
voltage, resistance, diodes and interruption.
The reading can be saved on the display,
which is backlit.
Specification
Accuracy is ensured for one year after
calibration, provided the unit is stored at a
temperature of 18-28 °C and a max. relative
humidity of 75%.
DC voltage measurement ( )
Connect the red probe cable to the “mAVΩ”
socket, and the black one to the “COM” socket.
Set the dial to the desired position. Connect
the measurement probes to the circuit to
be measured. If the value to be measured
is unknown, set the dial to the highest
measurement range then reduce the range
according to the reading until correct. Read the
voltage value from the LCD display. If the probe
cables have been connected with reverse
polarity, “-” is displayed in front of the reading.
Measurement limit Resolution
Accuracy
200 mV
100 µV
±(0.5% offset ± 4 digits)
2 V
1 mV
20 V
10 mV
200 V
100 mV
600 V
1 V
±(1% offset ± 5 digits)
Input resistance: 1 MΩ
Содержание home VC 830L
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