Fluke DDS Function Generator 271 - Manual (Page 15)

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",
"kHz", "VhiZ=" and so on.
shx0004f.gif
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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