7352 Series Digital Multimeter Operation Manual
4.2.1 Measurement Functions
4-13
4.2.1.5
Ach AC Current Measurement (ACI-Ach and ACI(AC+DC)-Ach)
For an AC current superimposed on a DC current, select the ACI-Ach function that measures an effective
value of the AC current only, or the ACI(AC+DC)-Ach function that measures a root-mean-square value
of the AC and DC currents.
1. Connect a DUT to the Ach mA and COM terminals on the front panel.
2. <ACI-Ach measurement>
Press .
The AC indicator is activated to show the AC coupling.
An effective value of the AC current with AC coupling is measured.
<ACI(AC+DC)-Ach measurement>
Re-press .
ACI and DCI are measured and the root-mean-square value (
) is displayed.
The AC and DC indicators are activated to show the AC+DC coupling.
WARNING:
Do not apply current that exceeds the maximum allowable applied current.
Do not measure a current source whose potential is more than 250 V.
Fire or electrical shock due to the failure of this instrument may occur.
The mA terminal is protected from any applied over-current by a fast-blow fuse.
For more information on how to replace the current protection fuse, refer to Chapter 8, “MAINTE-
NANCE.”
Figure 4-9 AC Current Measurement (ACI-Ach and ACI(AC+DC)-Ach)
Table 4-6 Maximum Allowable Applied Current and Protection Function (ACI-Ach and ACI(AC+DC)-Ach)
Input terminal
Maximum allowable
applied current
Protection function
Ach
Between mA and COM A terminals
2 A
F2A/250V fuse (Rear panel)
ACI
ACI
ACI
2
+DCI
2
250 V or less
2 A or less
2 Arms or less
