Fluke 87 III - Manual (Page 37)

4-1/2 Digit Mode (Model 87)
29
Models 83 and 85 Bar Graph
The bar graph on Models 83 and 85 consists of 43
segments. The number of lit segments is relative to the
full-scale value of the selected range. The polarity
indicator at the left of the graph indicates the polarity of
the input. For example, if the 40 V range is selected, the
"4" on the scale represents 40 V. An input of -30 V would
light the negative sign and the segments up to the "3" on
the scale.
If the input equals or exceeds the 4096 counts on a
manually-selected range, all segments are lit and
®
appears to the right of the bar graph. The graph does not
operate with the capacitance or frequency counter
functions.
The bar graph on Models 83 and 85 also has a zoom
function, as described under "Zoom Mode".
4-1/2 Digit Mode (Model 87)
On a Model 87 meter, pressing the yellow button for one
second causes the meter to enter the high-resolution,
4-1/2 digit mode. Readings are displayed at 10 times the
normal resolution with a maximum display of 19,999
counts. The display is updated once per second. The
4-1/2 digit mode works in all modes except capacitance
and the 250
µ
s and 100 ms MIN MAX modes.
To return to the 3-1/2 digit mode, press the yellow button
only until all of the display segments turn on (about one
second).