Mastech MS8251C, Руководство по эксплуатации

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4.4.1 Press “ MAX/MIN ” to display the maximum value
recorded
4.4.2 Press “
MAX/MIN ” again to display the minimum
value recorded.
4.4.3 Hold “
MAX/MIN ” to return to normal readings.
4.4 Maximum/Minimum Reading
4.5 Function Switching
4.6 Backlight
4.7 Auto Power off
4.8 Non-Contact Voltage (NCV)
4.7.1 The meter will power itself off after 30 min of non-use.
4.7.2 Press and button to resume using the meter.
4.7.3 To disable APO, hold “
REL ”while turning on the
meter.
4.8.1 With the rotary switch in any position except OFF,
hold down the “
NCV ” button.
4.8.2 Move the tip of the meter near the voltage source
or conductor. If the voltage detected is greater
than 110VAC, the buzzer will beep and the NCV
indicator near the tip of the meter will flash.
4.5.1 In voltage or current modes, press “ FUNC ” to
switch between AC and DC.
4.5.2 In resistance, diode or continuity modes, press
“
FUNC ” to switch between measurements.
4.5.3 In temperature mode, press “ FUNC ” to switch
between °C and °F.
4.6.1 Press “ ”to turn on backlight.Press again to turn off.
Note
：
1.Even though there is no indication,voltage may still
exist.Do not rely solely on NCV detector to determine
the presence of voltage in a wire.The measurement
may be affected by the design of the outlet,type of
insulation and other external factors.
2.The voltage sensing indicator may turn on when a
voltage is fed to the meter.
3.Other external interference(ex.Flashlight,motor)may
trigger the NCV sensor
.
4.9 AC/DC Voltage
Voltage is the electrical potential difference between two
points in a circuit. AC polarity changes over time, where
DC polarity stays constant.
Measuring AC or DC voltage:
4.9.1 Move the rotary switch to the “
V ” position.
4.9.2 Connect the red test lead to the “ V ” jack and the
black test lead to the “ COM ” jack.
4.9.3 Connect the test leads to the voltage source or load.
4.9.4 The measured voltage will be displayed.For DC
voltage, polarity of the red test lead will be
indicated.
4.9.5
Press “ FUNC ” to switch between AC/DC voltage.
4.10 Resistance
Ω
4.10.1 Move the rotary switch to the “ position.
4.10.2 Connect the red test lead to the “
Ω ” jack and the
black test lead to the “ COM ” jack.
4.10.3 Connect the test leads to the circuit.
4.10.4 Resistance value will be displayed.
”