HP ESG-D Series, Руководство пользователя

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4-9
Front and Rear Panel
Display Annotation
3. Softkey Labels
These labels define the function of the corresponding softkeys immediately to the
right of the label.
4. Error Messages Area
Error messages are reported in this space. When multiple error messages occur,
only the most recent message remains displayed. All of the reported error
messages can be viewed by pressing
Utility
,
Error Info
,
View Next Error Message
.
5. Text Area
This area is used to display status information about the signal generator such as
the modulation status, to enter information such as creating sweep lists, and to
manage information such as displaying the catalog of files and deleting unwanted
files.
6. Active Entry Area
The current active function is shown in this area. For example, if frequency is the
active function, the current setting will be displayed in the active entry area and
that setting will change as you enter a new value. If the active function has an
increment value associated with it, that value is displayed here also.
7. Annunciators
The display annunciators show the status of some of the signal generator functions
and indicate error conditions of the instrument. The following annunciators are
available:
Φ
M
This annunciator is turned on when phase modulation is turned
on. A second annunciator,
FM
, will appear in the same position
if frequency modulation is turned on. Frequency modulation
and phase modulation cannot be turned on at the same time so
the two annunciators will never conflict.
ALC OFF
This annunciator is turned on when the automatic leveling
control circuit is disabled. A second annunciator,
UNLEVEL
,
will appear in the same position if the signal generator’s
automatic level control is unable to maintain the output level.
When the ALC is disabled, the unleveled annunciator has no
meaning so these annunciators will never conflict.
AM
This annunciator is turned on when amplitude modulation is
turned on.