Chapter 2 31
Front and Rear Panel Features
Key Overview
Key Overview
The keys labeled FREQUENCY Channel, System, and Marker are all examples
of front-panel keys. The front-panel keys are dark gray, light gray, green, or white
in color. Front-panel keys that are white perform an immediate action rather than
bringing up a menu. The only green key is the
Preset key, which performs an
analyzer reset (A summary of all front panel keys and their related menu keys can
be found in user’s guide for your analyzer). Pressing most of the dark or light gray
front-panel keys accesses menus of functions that are displayed along the right side
of the display. These are called menu keys.
Menu keys list functions other than those accessed directly by the front panel keys.
To activate a menu key function, press the key immediately to the right of the
annotation on the screen. The menu keys that are displayed depend on which
front-panel key is pressed and which menu level is enabled.
If a menu key function’s value 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
AMPLITUDE Y Scale. This calls up the menu of related
amplitude functions. Note the function labeled
Ref Level (the default selected key
in the Amplitude menu) is highlighted.
Ref Level also appears in the active
function block, indicating that it is the active amplitude function and can now be
changed using any of the data entry controls.
A menu key with On and Off in its label can be used to turn the menu key’s
function on or off. To turn the function on, press the menu key so that On is
underlined. To turn the function off, press the menu key so that Off is underlined.
In the manual, when On should be underlined, it will be indicated as
Function
(On)
.
A function with Auto and Man in the label can either be auto-coupled or have its
value manually changed. The value of the function can be changed manually using
the numeric keypad, knob, or step keys. To auto-couple a function, press the menu
key so that Auto is underlined.
In some key menus, one key label will always be highlighted to show which key
has been selected. For example, when you press
Marker, you will access a menu of
keys in which some of the keys are grouped together by a blue bar on the left side
of the menu. The
Normal key, which is the Marker menu default key, will be
highlighted. When you press another key within the blue bar region, such as
Delta,
the highlight will move to that key to show it has been selected.
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