Fluke 271 User Manual

The 4-line x 20-character LCD panel is used to display 
and edit all the parameter values.  The paradigm used for 
selecting fields and editing values is described below. 

If necessary (because of temperature variations etc.), you 
can adjust the display contrast using a small screwdriver 
or trimmer tool inserted in the hole marked LCD. 

At power-up the instrument goes through a self-test cycle 
and the display shows the firmware revision number for a 
few seconds. If any tests fail, the display will show a 
message indicating the nature of the fault; if this happens, 
refer to the Users Manual. 

The display shown above is called the "main menu" and 
shows the frequency (or period), amplitude, dc offset and 
symmetry of the waveform. Other menus, called "edit 
menus", are called when you press the EDIT key followed 
by a MODE key. 

If the main menu display is not as shown in figure 1 above 
then you should reset all settings to their factory defaults. 
Do this by pressing RECALL, then the numeric 0 key, 
then ENTER. 

These three keys are used 
to choose between the 
basic waveforms: sine, 
square and triangular 
waves, and pulses and 
ramps of either polarity. 

 

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Repeated presses of a key will cycle the selection through 
the two or three choices offered.  The associated LED will 
light. 

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