Manual Fluke 28 II (page 43 of 64) (English)

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Digital Multimeters

HiRes Mode (28 II)

Zoom Mode (Power Up Option Only)

To use the Rel Zoom Bargraph:

1. Hold down

 while turning the Meter on. The

display reads “2rEL”.

2. Select the relative mode by pressing  again.

3. The center of the bargraph now represents zero and

the sensitivity of the bargraph increases by a factor

of 10. Measured values more negative than the

stored reference activate segments to the left of

center; values more positive activate segments to the

right of center.

Uses for the Zoom Mode

The relative mode, combined with the increased

sensitivity of the bargraph's zoom mode, helps you make

fast and accurate zero and peak adjustments.

For zero adjustments, set the Meter to the desired

function, short the test leads together, press ; then

connect the leads to the circuit under test. Adjust the

circuit's variable component until the display reads zero.

Only the center segment on the zoom bargraph is lit.

For peak adjustments, set the Meter to the desired

function, connect the leads to the circuit under test; then

press . The display reads zero. As you adjust for a

positive or negative peak, the bargraph length increases

to the right or left of zero. If an overange symbol (< >)

lights, press  twice to set a new reference; then

continue with the adjustment.

HiRes Mode (28 II)

On a Model 28 II, push  for one second to enter the

high-resolution (HiRes) 4-1/2 digit mode. Readings are

displayed at 10 times the normal resolution with a

maximum display of 19,999 counts. The HiRes mode

works in all modes except capacitance, frequency counter

functions, temperature, and the 250 μs (peak) MIN MAX

modes.

To return to the 3-1/2 digit mode, push  for one second.

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Others manual(s) of Fluke 28 II

Fluke 28 II User Manual - German - 64 pages

Fluke 28 II User Manual - Dutch - 64 pages

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Fluke 28 II Manual

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