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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.