Rigol DM3068 Guide de l'utilisateur télécharger pdf (Page 53)

Chapter 2 Front Panel Operations RIGOL

User’s Guide for DM3068

2-11

To Measure AC Current

Range: 200 μA, 2 mA, 20 mA, 200 mA, 2 A, 10 A

Max Resolution: 0.1 nA (in 200 μA range)

Input Protection: the multimeter uses two kinds of fuses for input protection: the

small current input fuse (500 mA high speed fuse) at the rear panel and the built-in

large current input fuse (10 A). 10% overrange is available on all ranges except 10

A. If the reading exceeds 10.5 A in 10 A range, “OVER LOAD” will be displayed.

In order to obtain more accurate measurement results, DM3068 deals with small

and large input currents separately. The multimeter will use small current

measurement mode for current within 200 mA and use large current measurement

mode for current that is equal to or higher than 2 A.

Operating Steps:

1. Enable the ACI measurement

Press

at the front panel to enter the following interface.

2. Make connection

Connect the test lead with the measured signal by referring to

“Measurement Connections”.

3. Set the range

Specify an appropriate range (the resolution is fixed at 6

digits) according to

the measured signal and measurement requirements. A high voltage icon “

”

will be displayed at the upper left corner of the screen when the 10 A range is

selected.

4. Set the measurement parameters (Optional)

The DCI measurement allows users to configure the filter. For details, please

refer to “Measurement Configuration”.

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Rigol DM3068 Guide de l'utilisateur Page 53