23
5.
MEASUREMENTS
Voltage measurement
5.1.
5.1.1.
Connecting the multimeter
5.1.2.
Main measurement
In this setting, the user can measure the true RMS value of an alternating voltage with its bias component (no
capacitive coupling): "TRMS" measurement. (default coupling is AC+DC)
In the “DC” mode, you measure a direct voltage or the DC component of an AC voltage.
Selection of the coupling from among:
-
alternating voltage measurement AC [F1]
-
direct voltage measurement DC [F2]
-
alternating voltage superposed on a direct voltage AC+DC [F3] at high
impedance
-
low-impedance alternating voltage
LowZ
[F4] to make measurements on
electrical installations, in order to avoid the measurement of a "phantom" voltage due to
coupling between lines.
5.1.3.
Secondary measurements
Pressing Meas
… gives access to the secondary measurements
of the main function.
1.
in VAC+DC and VAC
-
the frequency, the period, and the mathematical function:
FREQ_PER_MATH
-
the frequency, the measurement in dB, and the mathematical function:
FREQ_DB_MATH
-
the power measurement in dBm, its reference, and the mathematical function:
DBM_REF_MATH
-
the measurement of Peaks+ then
– and the peak factor:
PK+_PK-_CF
-
the resistive power, its reference, and the mathematical function:
W_REF_MATH
-
the power VxA, the current A, and the mathematical function:
VxA_A_MATH
2.
in VDC :
-
the mathematical function:
MATH
-
the resistive power, its reference, and the mathematical function:
W_REF_MATH
-
the power VxA, the current A, and the mathematical function:
VxA_A_MATH