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About the Test Set
Overview of key types
Overview of key types
The keys labeled FREQ Channel, System, and Marker Functions are all examples of front-panel keys.
Most of the dark or light gray keys access menus of functions that are displayed along the right side of
the display. These displayed key labels are next to a column of keys called menu keys.
Menu keys list functions based on which front-panel key was pressed last. These functions are also
dependant on the current selection of measurement application (
Mode) and measurement (Meas).
If the numeric value of a menu key function can be changed, it is called an active function. The function
label of the active function is highlighted after that key has been selected. For example, press
AMPTD Y
Scale
. This calls up the menu of related amplitude functions. The function labeled Ref Level (the default
selected key in the Amplitude menu) is highlighted.
Ref Level also appears in the upper left of the display
in the measurement information area. The displayed value indicates that the function is selected and its
value can now be changed using any of the data entry controls.
Some menu keys have multiple choices on their label, such as
On/Off or Top/Ctr/Bot (as shown below).
The different choices are selected by pressing the key multiple times. For example, the Auto/Man type of
key. To select the function, press the menu key and notice that Auto is underlined and the key becomes
highlighted. To change the function to manual, press the key again so that Man is underlined. If there are
Active
Function