Tenma 72-9375, Руководство по эксплуатации

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9
AC voltage measurement
The AC voltage ranges are: 4.000V, 40.00V, 400.0V
and 750.0V. To measure AC Voltage, connect the
Meter as follows:
1.
Insert the red test lead into the HzV ȍ terminal
and the black test lead into the COM terminal.
2. Set the rotary switch to V and press SELECT
button to select AC measurement mode.
3. Connect the test leads with the object being
measured.
The measured value shows on the display
ˈ
which
is effective value of sine wave (mean value
response).
Note
z At 400mV range, the Meter has an input
impedance of 4000M
ȍ
. All other ranges the
Meter has an input impedance of 10M
ȍ
. This
loading effect can cause measurement errors in
high impedance circuits. If the circuit
impedance is less than or equal to 10k
ȍ
, the
error is negligible (0.1% or less).
z
When AC voltage measurement has been
completed, disconnect the connection between
the test leads and the circuit under test.
DC voltage measurement
The DC Voltage ranges are: 400.0mV, 4.000V, 40.00V,
400.0V and 1000V. To measure DC voltage, connect
the Meter as follows:
1. Insert the red test lead into the
HzV
ȍ
terminal and
the black test lead into the COM terminal.
2. Set the rotary switch to V
; DC measurement is
default or press SELECT button to select DC
measurement mode.
3. Connect the test leads across with the object being
measured.
The measured value shows on the display.
72-9375: OPERATING MANUAL