Manual Fluke 289 (page 18 of 88) (English)

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Table 3. Display Features (cont.)

Item Function Indication

J Mini-

measurement

Displays the lightning bolt (when

necessary) and the input value

when the primary and secondary

displays are covered by a menu or

pop-up message.

K Date Indicates the date set in the internal

clock.

L Beeper Indicates the Meter’s beeper is

enabled (not associated with the

continuity beeper).

M Units Indicates the units of measure.

N Auxiliary Units Indicates unitless measurements

like Crest Factor.

O Range indicator Indicates the range the Meter is in

and the ranging mode (auto or

manual).

P Secondary display Displays secondary measurement

information about the input signal.

Bar Graph

The analog bar graph functions like the needle on an analog

meter, but without the overshoot. The bar graph updates 30

times per second. Because the graph updates faster than the

digital display, it is useful for making peak and null adjustments

and observing rapidly changing inputs. For frequency, duty cycle,

pulse width, dBm, and crest factor functions, the bar graph

represents the amplitude of the input signal (volts or amps) and

not the value in the primary display. The bar graph is not shown

for capacitance, temperature, LoZ, AC+DC, AC over DC, peak,

or min max functions.

For dc voltage, dc current, and all relative percent modes, a

zero-centered bar graph is displayed. For dc voltage and current,

the bar graph range is the maximum of the selected range. For

relative percent mode, the bar graph goes to ±10 %.

The number of lit segments indicates the measured value and is

relative to the full-scale value of the selected range. In the 50

Vac range, for example, the major divisions on the scale

represent 0, 5, 10, 15, 20, 25, 30, 35, 40, 45, and 50 Vac. An

input of 25 Vac turns on segments up to the middle of the scale.

For off-scale values, f appears to the right of the normal bar

graph. For the zero-center bar graph, a e appears at the left end

of the bar graph for negative off-scale values and fappears on

the right end for positive off-scale values.

Status Bar Elements

The status bar at the top of the Meter’s display contains

indicators for battery level, time of day, mini-measurement

display, present date, and beeper on/off icon.

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Fluke 289 Manual

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