Opitec Hobbyfix 208.062 Assembly instructions

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E208062#1
OPERATOR’S INSTRUCTION
MANUAL
MINI DlGITAL MULTIMETER
208.062
WARNING
READ AND UNDERSTAND THIS MANUAL BEFORE USING THE INSTRUMENT
Failure to understand and comply with the WARNINGS
and operating instructions can result in serious or fatal injuries and / or property damage.
GENERAL
Beforè attempting to operate the instrument become familiar with each control. A thorough understanding of how the
instrument operates will avoid undue mistakes and minimize measurement errors, instruments damage and the pos-
sibility of personal injury.
FRONT PANEL DESCRIPTION
This section consisting of the figure, will describe the proper function of the instrument.
1. FUNCTION AND RANGE Switch
This control is located in the center of the front panel, and it combines the operations of selecting the function and de-
sired range as well as having an “OFF” position. To extend the life of the battery, the switch should be in this “OFF”
position when the instrument is not in use.
2. Display
3.5 digit, 7 segment 0.5 “ high LCD
3. Common Jack
Plug in connection for black (negative) test lead
4. “V.Ω.mA.” Jack
Plug in connection for red (positive) test lead for all voltage and resistance and current (except 10A) measurements.
5. “10A“ Jack
Plug in connection for red (positive) test lead for 10A measurements.

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SPECIFICATIONS GENERAL
DISPLAY: 3.5 digit LCD,0.5” height, with polarily.
OVERRANGE INDICATION: 3 least significant digits blanked.
MAXIMUM COMMON MODE VOLTAGE: 500V
OPERATING ENVIRONMENT: 0 to 50°C, less than 80% relative humidity up to 35°C, less than 70% relative
humidity from 35°C to 50°C .
STORAGE ENVIRONMENT: —15°C to 50°C .
TEMPERATURE COEFFICIENT: (0 to 18°C and 28 to 50°C) Less than 0.1x applicable accuracy specification
per °C
POWER: 9V alkaline or carbon—zinc battery (NEDA 1604).
BATTERY LIFE: 100 hours typical with carbon—zinc cells, 200 hours with alkaline cells.
DIMENSIONS, WEIGHT: 126mm long x 70mm wide x 24mm thick. (4.96”x 2.76”x 0.94”) Net weight 170g
(6 oz).
DC VOLTAGE
RANGE RESOLUTION ACCURACY (1 YEAR) 18 to 28°C
200 mV 100µV ± 0.5% of rdg ± 2D
2000mV 1mV ± 0.5% of rdg ± 2D
20V 10mV ± 0.5% of rdg ± 2D
200V 100mV ± 0.5% of rdg ± 2D
1000V 1V ± 0.5% of rdg ± 2D
MAXIMUM ALLOWABLE INPUT: 1000V DC or peak AC
DC CURRENT
MAXIMUM
RANGE RESOLUTION ACCURACY (1YR) FULLSCALE
18 to 28°C VOLTAGE
DROP
200µA 0.1µA ± 1% of rdg ± 2D 0.25V
2000µA 1µA ± 1% of rdg ± 2D 0.25V
20mA 10µA ± 1% of rdg ± 2D 0.25V
200mA 100µA ± 1.2% of rdg ± 2D 0.25V
10A 10mA ± 2% of rdg ± 2D 0.25V
OVERLOAD PROTECTION: mA input, 0.2A 250V FUSE
AC VOLTAGE
RESO— ACCURACY (1 YR) FREQUENCY
RANGE LUTION 18 to 28°C RANGE
200V 100mV ± 1.2% of rdg ± 10D 45Hz—450Hz
750V 1V ± 1.2% of rdg ± 10D 45Hz—450Hz
MAXIMUM ALLOWABLE INPUT: 750V rms.
RESPONSE: Average responding, calibrated in rms of a sine wave.

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E208062#1
RESISTANCE
RANGE RESOLUTION ACCURACY (1YR) 18 to 28°C
200Ω100mΩ± 0.8% of rdg ± 2D
2000Ω1Ω± 0.8% of rdg ± 2D
20kΩ10Ω± 0.8% of rdg ± 2D
200kΩ100Ω± 0.8% of rdg ± 2D
2000kΩ1kΩ± 1% of rdg ± 2D
MAXIMUM OPEN CIRCUIT VOLTAGE: 2.8V
DIODE & TRANSISTOR TEST
Measures forward Voltage drop of a semiconductor junction in mV, the test current is 1.5mA MAX.
Measures hFE value o r a transislor (NPN or PNP).
OPERATING INSTRUCTIONS GENERAL
The METER is completely portable pocket—sized 3.5 digit multimeter designed for using by the engineer and
hobbyist.
Equipped with 5 functions and 19 ranges, each test position is quickly and easily selected with a simple turn
of the single selector switch.
WARNINGS
1. To avoid electrical shock hazard and / or damage to thc instrument, do not measure Voltages that might ex-
ceed 500V above earth ground.
2. Before the use of instrument, inspect test leads, connectors and probes for cracks, breaks, or crazes in the
insulation.
DC VOLTAGE MEASUREMENT
1. Connect red test lead to “V.Ω.mA” Input connector and black to “COM”.
2. Set RANGE switch to desired DC V position ir magnitude of value not only for this function but any measu-
rement factor is not known, set switch to highest range and reduce until satisfactory reading is obtained.
3. Connect test leads to device or circuit being measured.
4. Turn on power to device or circuit being measured. Voltage value will appear on Digital Display along with
the voltage polarity.
DC CURRENT MEASUREMENT
1. Red lead to “V.Ω.mA.” jack for measurements up to 200mA. Black lead to “COM” jack.
NOTE
For measurements between 200mA and 10 A connect red lead to “10A” jack with fally depressed.
2. RANGE switch to desired DCA position.
3. Open the circuit to be measured, and connect test leads IN SERIES with the load in which current is to be
measured.
4. Read current value on Digital Display.
AC VOLTAGE MEASUREMENT
1. Red lead to “V.Ω.mA.”, Black lead to “COM”.
2. RANGE switch to desired ACV position.
3. Connect test leads to device or circuit being tested.
4. Read voltage value on Digital Display.

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RESISTANCE MEASUREMENT
1. Red lead to “V.Ω.mA.”, Black lead to “COM”.
2. RANGE switch to desired Ωposition.
3. If the resistance being measured is connected to a circuit, turn off power and discharge all capacitors, befo-
re applying test probes.
4. Connect test leads to device or circuit being measured.
5. Read resistance value on Digital Display.
DIODE TEST
1. Red lead to “V.Ω.mA.”, Black lead to “COM”.
2. RANGE switch to > position.
3. Connect red lead to the anode of the diode under test and black lead to the cathode, read the forward vol-
tage drop on Digital Display.
4. If the connection is reversed, only figure “1” will be displayed.
TRANSISTOR TEST
1. RANGE switch to hFE position.
2. Determine whether the transistor is NPN or PNP and locate the Emitter, Base and Collector leads. Insert
the leads into proper holes of the socket on the front panal.
3. Read the approximate hFE value at the test condition of Base current 10µA, Vce 2.8V.
BATTERY FUSE REPLACEMENT
CAUTION
BEFORE ATTEMPTING BATTERY REMOVAL OR REPLACEMENT DISCONNECT TEST
LEADS FROM ANY ENERGIZED CIRCUITS TO AVOID SHOCK HAZARD.
Fuse rarely need replaœment and blow almost always as a result of operator error.
To replace battery & Fuse (0.2A / 250V)remove screws in the bottom of the case.
Simply remove the old, and replace with a new battery being careful to observe polarity.
SAFETY SYMBOLS
This marking adjacent to another marking or a terminal or operating
device indicates that the operator must refer to an explanation in the
Operating Instructions to avoid damage to the equipment and / or to
avoid personal injury.
This WARNING sign denotes a hazard. It calls attention to a procedu-
re. practice or the like, which if not correctly pertormed or adhered to,
could result in personal injury.
This CAUTION sign denotes a hazard. It calls attention to a procedure.
practice or the like, which if not correctly adhered to could result in da-
mage to or destruction of part or all of the instrument.
This marking advises the user that the terminal (s) so marked must not
be connected to a circuit point at which the voltage, with respect to
earth ground, exceeds (in this case) 500 volts.
This symbol adjacent to one or more terminals identifies them as being
associated with ranges that may in normal use be subjected to particu-
larly hazardous voltages. For maximum safery, the irlstrument and its
test leads should not be handled when these terminals are energized.
WARNING
CAUTION
500V max
!