OWNER'S MANUAL
DIGITAL MULTIMETER
MRP #93-0187 Rev. A
SAFETY PRECAUTIONS/
This Digital Multimeter is intended for INDOOR USE ONLY.
•
Pay close attention to
•
meter's case. These warnings, as well as all warnings and precautions used
through out this manual, must be followed to avoid electric shock and/or per-
sonal injury.
The RESPONSIBLE PARTY shall be made aware that, if the equipment is
•
used in a manner not specified by the manufacturer, the protection provided
by the equipment may be impaired.
To prevent electrical shock and/or damage to the tester or the equipment under
test, observe the following safety precautions:
DO NOT apply more than the rated voltage, as marked on the meter,
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between terminals or between any terminal and earth ground.
Use caution when working above 30V AC rms, 42 V peak, or 60 V DC. Such
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voltages pose a shock hazard.
To avoid false readings that could lead to possible electric shock or personal
•
injury, replace the batteries as soon as the low battery indicator
Use ONLY those test leads or probes provided with the meter. DO NOT use third-
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party test leads or probes.
Always inspect the multimeter, test leads and any other accessories for dam-
•
age prior to every use. If any damage is found, do not use tester until repairs
are done.
Always consider electrical and electronic equipment to be ener-gized (live).
•
Never assume any equipment is de-energized.
Never ground yourself when taking electrical measurements. Isolate yourself
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from ground by using dry rubber insulating mats to cover all exposed/ground-
ed metal. Stand on rubber mats and wear dry clothing.
SPECIFICATIONS
GENERAL SPECIFICATIONS AND FEATURES
3-½ digit LCD display (maximum reading of 2000)
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Manual range control
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Automatic negative (-) polarity indication
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Automatic zero adjustment
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Over range indicator (except 10 A function). Displays "1" on LCD
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Low battery indicator. Displays battery symbol
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Safety standard: CE EMC/LVD. The meter is up to the standards of IEC1010
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Pollution Degree 2, over voltage Category 2 (signifies protection against
transient impulses at the local level mains electrical supply).
Equipment marked
is protected throughout by Double or Reinforced Insulation.
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Operating environment:
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Temperature - 32° to 104° F. (0° C to 40° C)
Humidity - Less than 80% relative humidity (non-condensing)
Altitude - up to 6562 ft (2000 meters)
Storage environment:
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Temperature - 4° to 140° F (- 20° to 60° C)
Humidity - Less than 90% relative humidity (non-condensing)
Power Supply: One 9-volt (6F22) battery
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Fuse: 315mA/250V 5X20 mm (Radio Shack, GMA/217 series; #270-1046)
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fuse
Dimensions:
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Height - 5.50 in. (139 mm)
Width - 3.50 in. (89 mm)
Depth - 1.25 in. (32 mm)
Weight (including batteries): approximately 5.7 oz (170 g)
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ELECTRICAL SPECIFICATIONS
Accuracy of specifications in the following tables are based on an operating
temperature of 64°F to 82°F (18°C to 28°C) and a relative humidity of less than
75%.
Maximum voltage from V ma socket to COM socket is 500V AC/DC; from COM
socket to ground is 300V AC/DC.
WARNINGS
WARNINGS stamped on the front and rear of the
on LCD
- 1 -
DC VOLTS
Range
Resolution
200mV
2V
20V
200V
500V
Input impedance: 10MΩ for all ranges.
RESISTANCE (OHMS)
Range
Resolution
200Ω
2KΩ
20KΩ
200KΩ
20M Ω
displays.
Open Circuit Voltage: Approximately 3V
DIODE TEST
Function
Diode test
Open Circuit Voltage: Approximately 2.8V
Forward Voltage Drop: Approximately 1mA
DC AMPS
Range
Resolution
2000μA
20mA
200mA
10A
Measuring time is equal to or less than 15 seconds and time
interval is equal to or over 15 minutes.
BATTERY TEST
Range
1.5V
9V
AC VOLTS
Range
200V
500V
Frequency: 40-400Hz
TESTING PROCEDURES
A. AC/DC VOLTAGE MEASUREMENT
To avoid possible electric shock, instrument damage and/or equipment
damage, DO NOT attempt to measure voltages ABOVE 500V AC/DC or
take measurements if the voltage is unknown. 500V AC/DC between the
COM and V jacks is the maximum voltage that this instrument is
designed to measure. The "COM" terminal potential should not exceed
300V AC/DC measured to ground.
Accuracy
100μV
1mV
±(0.8% of reading
+ 5 digits)
10mV
100mV
1V
±(0.8% of reading
+ 5 digits
Accuracy
0.1Ω
±(1% of reading
1Ω
+ 5 digits)
10Ω
100Ω
10K Ω
±(2% of reading
+ 5 digits)
Range Resolution
Accuracy
1mV
0.5 ~ 0.8V
Accuracy
1μA
±(1.5% of reading
10μA
+ 5 digits)
100μA
10mA
±(2% of reading
+ 5 digits)
Resolution
Overload Protection
10mV
0.315A/250V fuse
Resolution
Accuracy
100mV
±(1.2% of reading
+ 10 digits)
1V
WARNING
- 2 -
Overload
Protection
230 Vrms
500V DC
or AC
Overload
Protection
250V DC/AC RMS
Overload
Protection
250V
DC/AC
RMS
Overload
Protection
0.315A/250V fuse
Non-Protected
Overload
Protection
500V DC or AC