14
Agilent E8663B Analog Signal Generator User’s Guide
Signal Generator Overview
Front Panel Display
UNLEVEL
This annunciator appears when the signal generator is unable to maintain the
correct output level. The
UNLEVEL
annunciator is not necessarily an indication of
instrument failure. Unleveled conditions can occur during normal operation. A
second annunciator,
ALC OFF
, will appear in the same position when the ALC
circuit is disabled.
UNLOCK
This annunciator appears when any of the phase locked loops are unable to
maintain phase lock. You can determine which loop is unlocked by examining the
error messages.
4. Amplitude Area
The current output power level setting is shown in this portion of the display. Indicators are also
displayed in this area when amplitude offset is used, amplitude reference mode is turned on, external
leveling mode is enabled, and when user flatness is enabled.
5. Error Message Area
Abbreviated error messages are reported in this space. When multiple error messages occur, only the
most recent message remains displayed. Reported error messages with details can be viewed by
pressing
Utility
>
Error Info
.
6. Text Area
This text area of the display:
•
shows signal generator status information, such as the modulation status, sweep lists, and file
catalogs
•
displays the tables
•
enables you to perform functions such as managing information, entering information, and
displaying or deleting files
7. Softkey Label Area
The labels in this area define the function of the softkeys located immediately to the right of the
label. The softkey label may change depending upon the function selected.
