CMU Controls 
1100.4903.12 3.3  E-9 
 
 
 
−  The softkey is a measurement control softkey (main softkey) indicating the 
measurement state (RUN, OFF, HLT). A yellow triangle indicates that a 
popup menu providing configurations can be opened with the softkey 
(press once for selection, a second time for opening the popup). 
A measurement can be started and aborted with the ON/OFF key (i.e. the 
ON/OFF key switches between the measurement states RUN and OFF). It 
can be stopped while preserving the valid results with the CONT/HALT 
key (i.e. the CONT/HALT key switches between the measurement states 
RUN and HLT; starting a measurement from the OFF state by means of 
the CONT/HALT key is not possible). In the HLT state, the instrument 
resources are not released; the application is still available. The formal 
aspects of measurement control are explained in Chapter 5. 
 
 
 
−  The softkey indicates the generator status (ON, OFF). A yellow triangle 
indicates that a popup menu providing configurations can be opened with 
the softkey (press once for selection, a second time for opening the 
popup). 
A generator can be started and aborted with the ON/OFF key. The formal 
aspects of generator control are explained in Chapter 5, section 
Measurement Control. 
 
 
 
The softkey toggles between two hotkey bars (corresponding to two groups of 
settings). The current group is indicated in large typeface in the first line of the 
softkey; the alternative group appears in smaller typeface next to a double 
triangle.  
 
 
 
Hotkeys 
Hotkeys are assigned to the eight keys at the lower edge of the screen. Only the hotkeys softkeys 
which are actually assigned in a menu are indicated (see Fig. 3-1). 
 
 
 
 
 
Selection: 
A hotkey is activated by pressing the associated key. After activation it 
changes its frame. 
 
 
 
 
 
 
 
 
 
Function: 
Hotkeys permit to 
−  Change from one measurement menu/graphical measurement menu to 
the other  
−  Select tabs in the popup menu  
−  A yellow triangle indicates that a second version of the current tab 
providing additional configurations can be opened with the hotkey. The 
hotkey toggles between the two versions of the tab.  
In the graphical measurement menu (see page 3.7), hotkeys provide 
extended settings and can be used like ordinary function softkeys.