3.2.5 Line On/Off test
- Overload protection: 600V DC or AC (valid value)
4. Operational guidelines
4.1 Reading hold
During the process of measurement, gently touch the key if you want tu hold
readings, and monitor's display value will be locked. Touch again the key , the
readings hold will be removed.
4.2 Backlight
1) In the process of measurement, if the measurement environment is too dark, press
the key for more than 2 seconds to enable backlight function. Then about 1
minute later, the backlight function will be automatically disabled.
2) During this process, press the key for 2 seconds to disable backlight.
4.3 Auto shutdown
1) If no operations occur within 10 minutes after the initialization, the instrument will
be in the state of dormancy. Auto shutdown at this moment can save power
consumption. 2 minutes befor shutdown, the buzzer will sound at an interval of 1
minute.
2) Press any key after auto shutdown to wake the instrument into operation.
3) The function of auto shutdown will be disabled if FUNC key is pressed while the
instrument is initialized.
4.4 Preparation for measurement
1) Press the power key for 2 seconds to initialize the instrument. If the battery voltage is
low (approximately ≤2.4V), the monitor will display the simbol . At this mo-
ment, the battery should be replaced. The instrument will be shut down if the power
key is pressed after the initialization.
4.5 AC current measurement
1) Hold a trigger, open clamp head, and catch one guide wire of a line to be measured.
2) Press the FUNC key to switch to AC current measurement mode. When the measured
signal is >0.01A, the instrument will display the measured current value.
Measuring
range Resolution Functions
If the electric resistance of the line
measured is less than 50Ω, the buzzer
inside the instrument may sound.
1Ω
7
