Wetekom 37 99 74 Bedienungsanleitung Seite 34

maximum measurement position (1000V) and reduce the range step by
step until a satisfactory reading is obtained.
The LCD displays" 1" indicating the existing selected range is overloaded, it
is required to select a higher range in order to obtain a correct reading.
In each range, the meter has an input impedance of approx. 10 MΩ This
loading effect can cause measurement errors in high impedance circuits. If
the circuit impedance is less than or equal to 10kΩ, the error is negligible
(0.1% or less).
When DC voltage measurement has been completed, disconnect the
connection between the testing leads and the circuit under test.
AC Voltage Measurement
Warning
To avoid harms to you or damages to the meter from electric shock,
please do not attempt to measure voltages higher than 1000 V or 750 V
rms although readings may be obtained.
The AC voltage measurement has 4 measurement positions on the rotary
switch: 2 V, 20 V, 200 V and 750 V.
To measure AC Voltage, connect the Meter as follows:
1. Insert the red test lead into the V/Ω/
lead into the COM input (22).
2. Set the rotary switch (20) to an appropriate measurement position in V~
range.
3. Connect the test leads across with the object being measured. The
measured value shows on the display, which is effective value of sine wave
(mean value response).
Notes
If the value of voltage to be measured is unknown, use the maximum
measurement position (750V) and reduce the range step by step until a
satisfactory reading is obtained.
The LCD displays "1" indicating the existing selected range is overloaded, it
is required to select a higher range in order to obtain a correct reading.
In each range, the meter has an input impedance of approx. 10 MΩ. This
loading effect can cause measurement errors in high impedance circuits. If
the circuit impedance is less than or equal to 10kΩ, the error is negligible
(0.1% or less).
Using
/ºC/ºF input (21) and the black test
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