7
Maximum Value/Minimum Value/Maximum-Minimum Value Hold
The instrument is equipped with maximum value, minimum value and maximum-
minimum value hold function. The steps of entering or exiting this function are as
follows:
•
Set the instrument to the measurement function you require.
•
Press the MAX/MIN button to enter maximum value hold mode, the instrument will
display the “MAX” symbol.
•
Press the MAX/MIN button again to enter minimum value hold mode, the
instrument will display the “MIN” symbol.
•
Press the MAX/MIN button again to enter maximum-minimum value hold mode,
the instrument will display the “MAX-MIN” symbol.
•
Press and hold the MAX/MIN button longer than 2 seconds to return the
instrument to the normal measurement mode.
Note: Frequency, duty ratio, diode, connectivity and transistor measurement do not
have this function.
USB Interface Function
The instrument is equipped with a USB interface function, measured data can be
uploaded to a computer for display, record and analysis via the USB port. The steps of
entering or exiting this function are as follows:
•
Turn the rotary switch of the instrument to any position except “OFF”.
•
Press and hold the REL/USB button for more than 2 seconds and the instrument
will display the “USB” symbol to show that the data transmission function is
enabled.
•
Press and hold the REL/USB button again for more than 2 seconds, the “USB”
symbol will disappear to show that the data transmission function has been
disabled.
Note: please refer to the interface software operation instructions for detailed
operations.
MEASURE AC & DC VOLTAGE
•
Turn the rotary knob to “
Ṽ”
, and press FUNC button and switch
between AC or DC voltage function.
•
Insert the red probe into the “ ” socket, and the black probe into
the “COM” socket.
•
Contact the probe to the measured circuit (connect to the circuit
under test in parallel) and measure the voltage.
•
Read the measurement result on the screen.
• Note
: In the AC voltage function, press the
Hz%
button to measure the frequency
and duty ratio of the AC voltage source, please refer to ‘Measure Frequency’ for
details.
•
The AC voltage value measured by using this instrument is true RMS (root mean
square). For sine wave and other wave (no DC offset), such as square wave,
triangle wave and step wave, these measurements are accurate.
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WARNING
•
Do not allow measurement of any voltage higher than DC 1000V or AC 750V
RMS, otherwise it may cause damage to the instrument, electric shock or
personal injuries.
