Measuring dc current – Fluke 189 User Manual

Page 56

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Model 187 & 189
Users Manual

3-20

Measuring DC Current

To measure dc current, set up the meter as shown in
Figure 3-12.

You can view separate dc and ac amps signal
components.

Press

%

once to display ac current in the primary

display and dc current in the secondary display
(ac over dc).

Press

%

a second time to reverse the displays (dc

over ac).

In either of these states, the following pushbutton
functions are not available:

Display hold (

Q

).

AutoHOLD (

O

Q

)

MIN MAX (

M

)

FAST MN MX (

O

M

)

Hz (

N

)

Relative (

D

)

LOGGING and SAVE (Model 189)

Press

%

a third time to display the ac + dc rms value

in the primary display. (FAST MN MX is unavailable in
this state.)

Press

%

a fourth time to return to the normal dc

display.

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