Fluke 271 manual FIELD and DIGIT Keys and the Rotary Control, Getting Started

Getting Started

Controls and Connections

FIELD and DIGIT Keys and the Rotary Control

The FIELD keys move the display cursor between fields.

The fields in the display shown in figure 1 above

are "FREQ=", "10.00000",shx0004f.gif

"kHz", "VhiZ=" and so on.

Each field is one of three types: a parameter name, a parameter value or a unit name.

The DIGIT keys work in different ways depending on selected field type.

When the field contains a numeric parameter value the DIGIT keys move the cursor right (less significant) or left (more significant). The rotary control will then increment or decrement the digit indicated.

When the field contains a unit name, the DIGIT keys have the effect of multiplying or dividing the value by 10; they simultaneously set the display of the value and its unit in the most convenient engineering format. The rotary control has the same effect.

Thus, for example, if you select kHz with the FIELD key, successive presses of the right DIGIT key (or rotating the knob clockwise) change the value and the units as follows:

10.00000kHz

100.0000kHz

1.000000MHz

10.00000MHz

When the field contains a parameter name, successive presses of the DIGIT keys allow you to make a selection from all the possible choices for that parameter. Again, the rotary control has the same effect.

For example, with VhiZ selected in the start-up screen above, successive presses of the right DIGIT key (or rotating the knob clockwise) change the amplitude displayed as follows:

VhiZ=+20.0 Vpp

VhiZ=+7.07 Vrms

V=+10.0 Vpp V =+3.54 Vrms OUT =+24.0dBm

All of these are equivalent representations of the output amplitude, for a sine wave. If the waveform is not sinusoidal then you can still display the rms values but the dBm representation is excluded from the list.

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