AXIOMET AX-174, Инструкция по эксплуатации

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V
COM A
V
mA
uA
A
mA
uA
OFF
EF
VO
LT
A
UT
O
SC
AN
COM A
V
mA
uA
A
mA
uA
OFF
E
F
VO
LT
A
U
TO
S
CA
N
3.1.4. TRUE RMS measurement
All the measurement values of the true RMS meter on the AC voltage and AC current are true root-
mean-square values. The basic meter can only measure the AC average value.
3.1.5. Auto power off setting
When the meter is powered on, it is under auto power off mode. The meter will power itself off
after 10 minutes if there is not any operation. Press SELECT for 2 seconds to wake the meter up.
You can also rotate the rotary switch to the position of OFF and then restart the meter.
To disable the auto power off function, hold down the SELECT key while turning the meter on,
then the icon will disappear.
3.2. Measurement Functions
3.2.1. AC and DC Voltage measurement
To avoid electrical shock and/or damage to the instrument, do not attempt to take any
voltage measurement that might exceeds 1000Vdc or 1000Vac rms.
To avoid electrical shock and/or damage to the instrument, do not apply more than 1000Vdc or
1000Vac rms between that common terminal and the earth ground
Voltage is the difference in electrical potential between two points.
The polarity of ac (alternating current) voltage varies over time;
the polarity of dc (direct current) voltage is constant.
To measure ac or dc voltage ( set up and connect the Meter as shown in
Figure 3-1)
1)
Set the rotary switch to the position of EF/VOLT.
2) Select auto scan mode or press SELECT key to select between AC and
DC voltage mode.
3) Connect the black and red test leads to the COM and V terminals
respectively.
4)
Connect the test leads to the circuit being measured.
5) Read and displayed value. AC Voltage
DC Voltage
Figure 3-1 Measuring AC and DC Voltage
Note:
In a case of probe hanging in the air, the voltage inducated by the test leads may cause unstable
readings on the display screen, but that will not affect the accuracy of measurement