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3.6 TESTING DIODE
1. Connect the black test lead to COM jack and the red test lead to the V
Ω
Hz jack
(The polarity of red lead is
〝
+
〞
)
2. Set the rotary switch at position and connect red lead to the anode, black
lead to the cathode of the diode under testing .The meter will show the approx.
forward voltage of the diode. If the lead connection is reversed. only figure
〝
1
〞
displayed.
3.7 TESTING TRANSISTOR
1. Set the rotary switch at hFE position.
2. Determine whether the transistor to be tested is NPN or PNP type and locate th
e
Emitter. Base and Collectors. Insert leads of the transistor into proper holes of th
e
transistor testing socket.
3. The meter will show the approx. hFE value at test condition of base current 10
μ
A
and Vce 3.2V.
-13-
3.8 CONTINUTITY TEST
1. Connect the black test lead to the COM jack and the red test lead to the V
Ω
H
z
jack. (The polarity of the red lead is positive
〝
+
〞
)
2. Set the rotary switch at position and connect test leads across two points of
the circuit under testing. If continuity exists (i.e., resistance less than about 50
Ω
),
built - in buzzer will sound.
3.9 MEASURING TEMPERATURE
1. Set the rotary switch at TEMP position and the LCD display will show the curren
t
environment temperature.
2. Insert
〝
K
〞
type thermocouple into the temperature measuring socket on the fron
t
panel and contact the object to be measured with the thermocouple probe. Read LC
D
display.
WARNING: To avoid electric shock, be sure the thermocouple has been removed
before changing to another function measurement.
-14-
4. SPECIFICATIONS
Accuracy is specified for a period of one year after calibration and at 18
℃
to 28
℃
(64
℉
to
82
℉
) with relative humidity to 80%.
4.1 GENERAL
MAXIMUM VOLTAGEBETWEEN
TERMINALS AND EARTH GROUND
FUSE PROTECTION
POWER SUPPLY
DISPLAY
MEASURING METHOD
OVERRANGE INDICATION
POLARITY INDICATION
1000V dc or 700V rms ac (sine)
mA: F 200mA/250V (A: unfused)
9V battery, Neda 1604 or 6F22
LCD, 1999 counts, updates 2-3/sec
Dual-slope integration A/D converter
〝
1
〞
figure only on the display
〝
-
〞
displayed for negative polarity
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