Fluke 27 User Manual page 9

function selector rotary switch in the mA/A position (ac or
dc).
G RANGE R Manual Range Mode
Pushbutton
Press once to enter manual range mode, press again to
increment range, press and hold for 2 seconds to return
to autorange. Meter returns to autorange if the function
selector is switched to any other position. There is no
autorange annunciator; absence of the manual range
annunciator indicates the meter is in autorange. If
RANGE is depressed (>1 second) while the function
switch is moved from OFF to any ON position, manual
ranging will be selected in all functions.
H REL L Relative Mode Pushbutton
Press momentarily to enter the Relative mode and store
the displayed reading. The display will read zero. Press
again to update the stored digital reading. Press and hold
for 2 seconds to exit the Relative mode. The Relative
mode stores a digital reading and displays the change
(difference) between the stored reading and any following
reading. For example, if the stored reading is 15.00 V and
the present readings is 14.10 V, the display will indicate -
0.90V. The analog bar graph continues to display the
actual reading (14.10V). If the difference exceeds 3999
counts (without overloading the input), OF (overflow) is
displayed. The Relative mode selects manual ranging;
changing ranges automatically exits the Relative mode.
I MIN/MAX Mode Pushbutton
Press momentarily to enter MIN/MAX mode, press again
to toggle between MIN and MAX indications. Press and
hold for 2 seconds to exit MIN/MAX mode. The meter
stores the minimum and maximum digital readings, and
will display either reading as selected by the operator.
Press the HOLD/RESET button to reset the MIN/MAX
readings to the present input. The MIN/MAX mode
selects manual ranging; use a range that can record the
maximum anticipated input. Range changes reset
previously recorded MIN/MAX readings. Exiting the
MIN/MAX mode does not reset the previously recorded
readings unless the range or function is changed. The
MIN/MAX mode overrides the Touch Hold
W Warning
To avoid electric shock or personal injury, do
®
not use Touch Hold
circuits with dangerous voltages are de-
energized. Touch Hold
unstable or noisy readings.
Operating Features
®
mode.
to determine that
®
will not capture
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