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Users Manual

Testing Diodes (113, 115, 117)

Using the Bargraph

The bar graph is like the needle on an analog meter. It has an overload indicator ( ) to the right and a polarity

indicator (+) to the left.

Because the bar graph is much faster than the digital display, the bar graph is useful for making peak and null

adjustments.

The bar graph is disabled when measuring capacitance. In frequency, the bar graph and range annunciator

indicates the underlying voltage or current up to 1 kHz.

The number of segments indicates the measured value and is relative to the full-scale value of the selected

range.

In the 60 V range, for example (see below), the major divisions on the scale represent 0, 15, 30, 45, and 60 V. An

input of -30 V turns on the negative sign and the segments up to the middle of the scale.

113 115, 117

Forward Bias

Single

Beep

Reverse Bias

Good Diode Good Diode

Good DiodeGood Diode

Forward Bias

Reverse Bias

Shorted

and

Open

Bad Diode Bad Diode

Bad Diode

Open

Shorted

and

Good DiodeGood Diode

Forward Bias

Reverse Bias

Bad Diode

Open

Shorted

and

Fluke 110 User Manual

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