3.2.8 Diode and Continuity Test
Range
Description
Test Condition
Diode forward voltage drop
Forward DC current is approximate 0.5mA,
reverse voltage is approximate 1.5V.
When the resistance under test is
less than 30±10Ω, buzzer sounds
continuously.
Open circuit voltage is approximate 0.5V
Overload protection: 250V DC or AC peak value
NOTE: Do not input voltage at this range.
3.2.9 Capacitance
（
C
）
Range
Accuracy
Resolution
40nF
±(2.5%+10)
10pF
400nF
±(2.5%+5)
100pF
4μF
1nF
40μF
10nF
400μF
±(5.0%+10)
100nF
2000μF
100nF
Overload protection: 250V DC/ AC peak
3.2.10 Frequency
（
Hz
）
Range
Accuracy
Resolution
10Hz
±(0.5%+4)
0.01Hz
100Hz
0.1Hz
1000Hz
1Hz
10kHz
10Hz
100kHz
100Hz
1MHz
1kHz
30MHz
10kHz
Input sensitivity: 0.7V RMS.
Overload protection: 250V DC/ AC peak
3.2.11 Temperature
（
℃/℉
）
Range
Display
Resolution
-40
℃
-1000
℃
＜
400
℃
±(0.8% +4)
≥400℃ ±(1.5% +15)
1
℃
0F-1832
℉
＜
750
℉ ±(0.8% +5)
≥750℉ ±(1.5% +15)
℉
Sensor: TP01 (K-type thermocouple)
NOTE: Do not input voltage at this range, it may cause damage to the meter.
3.2.12 Transistor triode (hFE)
Measurement
Range
Test Conditions
NPN or PNP
0 ~ 1000
Base current is approximate 15uA, Vce is
about 4.5V
4. OPERATION
4.1 Panel Description:
○
1
.Input terminal:
Terminal
Description
A
Input terminal for AC and DC current measurements to Max 20.00 A
（
15 seconds
）
, frequency and duty cycle coefficient.
uA/mA
Input terminal for AC and DC microamp and milliamp measurements to 600mA (600mA can last 18 hours), frequency
and duty cycle coefficient.
COM
Common terminal for all measurements
VΩHz
Input terminal for voltage, continuity, resistance, diode, capacitance, frequency, and duty cycle coefficient
measurements.
hFE
Input terminal for triode measurement.
TEMP
Input terminal for temperature measurement.
②
.
Rotary switch: used to change the range and choose functions.
Symbol
DC voltage measurement. Press DC/AC to shift between DC/AC voltage measurements. Press Hz/DUTY to shift
between frequency and duty cycle measurements.
Variable frequency voltage measurement. Press Hz/DUTY to shift between frequency and duty cycle measurements.
Ω
Ω resistance measurement. Press DC/AC to choose diode test. Press DC/AC again to choose continuity test.
Capacitance measurement
Hz
Frequency measurement. Press DC/AC to choose diode test. Press DC/AC again to choose continuity test.
℃/℉
Temperature measurement. Press DC/AC to shift between
℃ and ℉ .
hFE
Triode magnification measurement
DC current measurement (from 0 μA to 6000 μA). Press DC/AC for AC current measurement (from 0 μA to 6000 μA).
DC current measurement (from 0 mA to 600 mA). Press DC/AC for AC current measurement (from 0 mA to 600 mA).
DC current measurement (from 0 A to 20A). Press DC/AC for AC current measurement (from 0 A to 20A).
③
Function Button
③
-1. MAX / MIN:
Recording of minimum and maximum values
1) Press MAX/MIN into MAX mode, which will store the maximum value of measurements; Press it again to start MIN mode, which will store the
minimum value of measurements.
2) Under MAX/MIN mode, it will start manual range automatically. Under this mode, functions like RELΔ, HOLD, RANGE, and DC/AC will not
be available.
3) Under MAX/MIN mode, it will store maximum or minimum values automatically.
4) Under MAX/MIN mode, analog bar display and auto power off can’t be used.
5) Press MAX/MIN for 2 seconds it will exit MAX/MIN mode.
③
-2. Hz/DUTY
When measuring the Frequency, press Hz/DUTY will shift between frequency and duty cycle (1~99%
）
measurement. When measuring DC/AC
voltage / current
，
press Hz/DUTY can choose voltage/frequency/duty cycle mode or current /frequency/duty cycle mode.
③
-3.
RELΔ
1
）
Stores the present reading as a reference for subsequent readings. The display is zeroed, and the stored reading is subtracted from all subsequent
readings. REL
△
(readings) = input value
- reference value.
2) RELΔ function is only available under manual range mode.
3) Press REL
△
will enter manual range automatically.
4) Under REL
△ mode, press REL△ again will exit REL△ mode.
5) Under HOLD mode, press REL
△ will exit HOLD mode. It will regard the
current measuring value as reference value, and the reference value will be
subtracted by subsequent readings automatically.
6) Press
RANGE, DC/AC, or switch the rotary will exit the RELΔ mode.
(RELΔ symbol will disappear from LCD)
7)OL display
：
Under RELΔ mode, when input value over limit value, OL will
be displayed. Press RELΔ to exit the RELΔ mode. When OL is displayed,
meter can’t enter the RELΔ mode.
8) Under RELΔ mode
，
analog bar display is not available.
③
-
4. HOLD/
LIGHT: Data Hold and Backlight
A.HOLD: data hold
1) Press HOLD will enter HOLD mode, the current value will be hold, and symbol HOLD will be displayed. Press HOLD again can exit the
HOLD mode.
