7351 Series Digital Multimeter Operation Manual
4.2.1 Measurement Functions
4-12
4.2.1.5
AC Current Measurement (ACI and ACI (AC+DC))
For an AC current superimposed on a DC current, select the ACI function that measures an effective value
of the AC current only, or the ACI (AC+DC) function that measures a root-mean-square value of the AC
and DC currents.
1. Input terminals differ depending on the measurement range.
<200 mA and 2000 mA ranges>
Connect a DUT to the mA and COM terminals on the front panel.
<10 A range>
Connect a DUT to the 10 A and COM terminals on the front panel.
2. <ACI measurement>
Press .
An effective value of the AC voltage with AC coupling is measured.
<ACI (AC+DC) measurement>
Press
and
.
ACI and DCI 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 current that exceeds the maximum allowable applied current.
Must not measure the current source whose potential is more than 250 V.
Fire or electric shocks due to the failure of this instrument may occur.
The mA and 10 A terminals are protected from any applied over-current by a fast-blow fuse.
For more information on how to replace the over-current protection fuse, refer to Chapter 8, “MAIN-
TENANCE”.
Table 4-6 Maximum Allowable Applied Current and Protection Function (ACI and ACI (AC+DC))
Input terminal
Measurement range
Maximum allowable
applied current
Protection function
mA
200 mA, 2000 mA
2 A
F2A / 250 V Fuse
10 A
10 A
10 A
F15A / 250 V Fuse
ACI
SHIFT
ACI
ACI
2
+DCI
2
