ADCMT 7351A - AC Voltage Measurement (ACV and ACV(AC+DC)); Measurement Range and Input Impedance (DCV); Maximum Allowable Applied Voltage (ACV and ACV (AC+DC))

7351 Series Digital Multimeter Operation Manual
4.2.1 Measurement Functions
4-8
4.2.1.2 AC Voltage Measurement (ACV and ACV(AC+DC))
For an AC voltage superimposed on a DC voltage, select the ACV function that measures an effective
value of the AC voltage only, or the ACV (AC+DC) function that measures a root-mean-square value of
the AC and DC voltages.
1. Connect a DUT to the COM and V terminals on the front panel.
2. <ACV measurement>
Press .
An effective value of the AC voltage with AC coupling is measured.
<ACV (AC+DC) measurement>
Press and .
ACV and DCV are measured and the root mean square value ( ) is displayed.
The AC and DC indicators are turned on to show the AC+DC coupling.
WARNING: Do not apply voltage that exceeds the maximum allowable applied voltage. Fire or electric
shocks due to the failure of this instrument may occur.
Table 4-2 Measurement range and Input impedance (DCV)
Measurement range Input impedance
200 mV, 2000 mV 1 G or more
20 V, 200 V, 1000 V 10 M 1%
Table 4-3 Maximum Allowable Applied Voltage (ACV and ACV (AC+DC))
Between V and COM terminals
1000 Vpeak, 700 Vrms, 2.2  10
7
VHz
Between COM terminal and chassis (grounding) 500 V
ACV
SHIFT
ACV
ACV
2
+DCV
2