Agilent Technologies E8247C PSG CW - Manual (Page 208)

198 Chapter 10
Troubleshooting
Signal Generator Locks Up
Signal Generator Locks Up
If the signal generator is locked up, check the following:
• Make sure that the signal generator is not in remote mode (in remote mode, the R annunciator appears on
the display). To exit remote mode and unlock the front panel keypad, press
Local
.
• Make sure that the signal generator is not in local lockout condition. Local lockout prevents front panel
operation. For more information on local lockout, refer to the Programming Guide.
• Check for a progress bar on the signal generator display, which indicates that an operation is in progress.
• Press
Preset
.
• Cycle power on the signal generator.
Fail-Safe Recovery Sequence
Use the fail-safe recovery sequence only if the previous suggestions do not resolve the problem.
CAUTION
This process does reset the signal generator, but it also destroys the following types of data:
• all user files (instrument state and data files)
• DCFM/DC
Φ
M calibration data
• persistent states
NOTE
Do not attempt to perform any other front panel or remote operations during the fail-safe
sequence.
To run the fail-safe sequence, follow these steps:
1. Hold down the
Preset
key while cycling power.
2. Continue to hold down the
Preset
key until the following message is displayed:
WARNING
You are entering the diagnostics menu which can cause unpredictable instrument
behavior. Are you sure you want to continue?
CAUTION
Carefully read the entire message! It may list additional risks with this procedure.