ADCMT 7352A - Bch AC Current Measurement (ACI-Bch and ACI(AC+DC)-Bch); AC Current Measurement (ACI-Bch and ACI(AC+DC)-Bch); Maximum Allowable Applied Current and Protection Function (ACI-Bch and ACI(AC+DC)-Bch)

7352 Series Digital Multimeter Operation Manual
4.2.1 Measurement Functions
4-20
4.2.1.11 Bch AC Current Measurement (ACI-Bch and ACI(AC+DC)-Bch)
For an AC current superimposed on a DC current, select the ACI-Bch function that measures an effective
value of the AC current only, or the ACI(AC+DC)-Bch function that measures a root-mean-square value
of the AC and DC currents.
1. Connect a DUT to the Bch A and COM terminals on the front panel.
2. <ACI-Bch measurement>
Press and .
The Bch and AC indicators are activated to show the AC coupling.
An effective value of the AC current with AC coupling is measured.
<ACI(AC+DC)-Bch measurement>
Re-press and .
ACI and DCI are measured and the root-mean-square value ( ) is displayed.
The Bch, 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 A 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 4-15 AC Current Measurement (ACI-Bch and ACI(AC+DC)-Bch)
Table 4-13 Maximum Allowable Applied Current and Protection Function (ACI-Bch and ACI(AC+DC)-Bch)
Input terminal
Maximum allowable
applied current
Protection function
Bch Between A and COM B terminals 10 A F15A/250V fuse (Inside of this instrument)
SHIFT
ACI
SHIFT
ACI
ACI
2
+DCI
2
250 V or less
10 A or less
10 Arms or less