Fluke 87 TRUE RMS MULTIMETER User Manual page 13

True rms multimeter
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2.
To turn the meter on and select a function, turn the
rotary switch from OFF to the appropriate switch
position. All segments on the liquid-crystal display
(LCD) will turn on for one second, then the meter is
ready for normal operation. If you would like to freeze
the display with all segments on, press and hold
down any button, while turning the meter on. As long
as the button is held down, all LCD segments will
remain on.
3.
To select an additional operation, press the
appropriate pushbuttons above the rotary switch as
described in the items below. (See also, Figure 1.)
To operate the MIN MAX and RANGE buttons: press
to select, press again to scroll or increment, and
press and hold for two seconds to exit.
To operate the Hz button: press to select the
frequency mode, press again to select duty cycle, and
press again to exit.
To operate the back-lit display, press the YELLOW
button. The back-light automatically turns off in 68
seconds to conserve battery life.
To operate the remaining buttons: press to select and
press again to exit.
The response of the display and the pushbuttons
slows down in the capacitance mode.
An annunciator is displayed when a mode has been
selected. A quick way to reset all the pushbuttons to their
default state is to turn the rotary switch to an adjacent
function and then back to the function you are using.
4.
To take a measurement, use the test lead probes to
make the proper contacts. Remember, insert the
meter in the circuit in parallel for voltage and in series
for current measurements. Read the measurement on
the display. If you did not manually select a range (by
using the RANGE button), the range that provides the
best resolution is automatically selected.
5.
To run a performance check of the meter, turn the
rotary switch to
and connect a test lead from the
T input to the mA A input. (If you are using a
test probe, touch the half of the input contact nearest
the LCD.) The display should read 1.000 k
digits. With the rotary switch still at
(11A) by inserting the plug end of the test lead into
the A input and test the mA uA fuse (44/100A) by
Getting Started Quickly
Note
5
, test the A fuse
5

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