7
A. DC/AC Voltage Measurement
(See figure 2)
figure 2
Warning
To avoid harms to you or damages to the Meter from electric shock, please do
not attempt to measure voltages higher than 1000V although readings may be
obtained.
When measuring high voltage, take extra care to avoid electric shock.
1. Insert the red test lead into the
V
terminal and the black test lead into the
COM
terminal.
2. Set the rotary switch to
V; DC measurement is default or press
BLUE
button to
switch between DC and AC measurement mode.
3. Connect the test leads across with the object being measured. The measured
value shows on the display.
UT61A, UT61B and UT61C:
display effective value of sine wave (mean value
response).
UT61D and UT61E:
display true rms value.
4. Press
Hz%
to obtain the frequency and duty cycle value.
Input Amplitude: (DC electric level is zero)
Input Amplitude: range 30%
Frequency respouse:UT61A and B 400Hz
UT61C,UT61D and UT61E 1KHz
Note
l
In each range, the Meter has an input impedance of 10M except mV range
which input impedance is 3000M . This loading effect can cause measurement
errors in high impedance circuits. If the circuit impedance is less than or equal
to 10k , the error is negligible (0.1% or less).
l
For UT61A and UT61B:When measuring mV, you must press
RANGE
manually
to enter mV range.
l
When voltage measurement has been completed, disconnect the connection
between the testing leads and the circuit under test, and remove the testing leads
away from the input terminals of the Meter.
