Model:
UT61B
MANUAL
F
UNCTIONAL
B
UTTONS
1. LIGHT
button
Press and hold for 2 seconds to turn the display backlight on or off.
2. HOLD
button
Press HOLD to enter and exit hold mode. the symbol H is displayed.
3. BLUE
button
Press to select the alternate feature.
4. RANGE
button
Press range to enter the manual ranging mode - the meter beeps. Press range to step
through the ranges available for the selected function - the meter beeps. Press and
hold Range for 2 seconds to return to autoranging - the meter beeps
5. MAX/MIN
Press to select the maximum and minimum value. Press and hold for over 2 seconds
to exit MAX MIN for over 2 seconds to exit MAX MIN mode and return to the present
measurement range.
6. REL
Press to enter or exit the REL mode. Press and hold for 2 seconds to enter or exit
RS232C or USB mode.
M
EASUREMENT
O
PERATION
A. DC/ AC Voltage Measurement
(See fi gure 2)
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 the 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. UT61B displays effective value of sine wave (mean value re-
sponse).
In each range, the meter has an input impedance of 10M
. 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).
To avoid possibly damages to the meter, please do not attempt to input higher than
1000V.
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