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17
Please switch off the current of measured loop before connecting the
multimeter with the measured loop, otherwise it can present a risk of
electric spark.
Please select correct input terminal and set the rotary switch to correct
position. If current value is unknown, please perform measurement
starting from large current range. For measuring current over 10A, the
measurement duration shall be less than 10 seconds and the measurement
interval shall be greater than 15 minutes.
If measured current is >10A, the display screen flashes; if >20A, “OL” or
“-OL” is displayed.
If test lead is connected with current input terminal, please do not connect
test lead with any circuit in parallel, otherwise it can damage the burnt-in
fuse and the multimeter.
After all measurement operations are completed, please switch off the
measured current source before disconnecting test lead with measured
circuit, especially for large current measurement.
10. Non-contact AC voltage (NCV) detection (Figure 10)
1) Set the rotary switch to “ ” (with LED lamp lit up red and “Lo” displayed).
Short press SEL to switch sensitivity between “Lo” and “HI”.
2) When the sensing end approaches electric fields such as outlet or insulated
conductor, the buzzer makes a long beep and the red light is lit up.
3) “Lo” (Low sensitivity): Applied in wall-mounted outlets, power distribution
units, industrial outlets, and multiple power cords. “HI” (High sensitivity):
Applied in hidden outlets or connectors of power supply.
Warning:
Please make the sensing end approach electric field when performing
measurement, otherwise it can affect the sensitivity.
If the voltage of measured electric field is 100V AC, please observe if ≥
the conductor of measured electric field is insulated, so as to avoid personal
injury.
Even the displayed result is that voltage is not present, it does not mean
voltage is present. Do not determine if voltage is present simply by the
NCV. Since the outlet design and the insulation thickness differ from one
another, the operation results may be affected.
XII. Other Functions
1. Silent mode
The multimeter is designed with buzzer. When “MAX” button is held down,
the multimeter is powered on and the LCD shows “BEEP” as indication.
When releasing the button “MAX”, the buzzer is disabled, the multimeter
enters measurement state, and the symbol “ ” is displayed on the LCD.
To enable the buzzer, please power off the multimeter and then restart it.
2. Disable auto-off backlight
The multimeter is designed with auto-of f backlight. When “HOLD” button
is held down, the multimeter is powered on and the LCD shows “LoFF” as
indication. When releasing the button “HOLD”, the multimeter enters
measurement state. To enable auto-off backlight function, please power
off the multimeter and then restart it.
3. Disable auto-off function
To disable the auto-off function, please hold down “Select” button and then
power on the multimeter (with the buzzer making five beeps and the symbol
“ ” disappeared at the same time).
4: Awakening function
Under sleep mode, the multimeter can be awakened by all buttons and the
rotary switch.
5. Audible and visual alarm (not in silent mode)
1) Diode:
0.12V: The red light is lit up and the buzzer makes a long beep.
≥0.12V and 2V: The greed light is lit up and the buzzer sounds once.
>2V: The light is off.
2) Continuity:
≤20Ω: The buzzer makes a long beep and the green light is lit up.
>20Ω: The red light is lit up and the OL light is off.
3) Voltage (Range: 600V):
>600V: The red light is lit up.
UT117C User ManualUT117C User Manual
Figure 10
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