-446 Keysight E4980A/AL User’s Guide
Error Messages
Warning Messages
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Warning Messages
A warning message is displayed in the instrument status display area in the
lower-left part of the display. Pressing any of the front keys other than the
[Local/Lock] key or executing the :DISP:CCL command clears the message.
This message simply appears on the display since it is not known to remote
environments such as GPIB. This message is not displayed when another error
message is already displayed in the instrument message/warning area.
The warning messages for this instrument are as follows.
Numeric
1 I bias unit
The E4980A finds one current bias unit (42841A) connected.
2 I bias units
The E4980A/AL finds two current bias units (42841A) connected.
A
ALC unable to regulate
The voltage level setting is inappropriate for using the ALC function. The ALC
function does not work and the operation will be the same as when the ALC
function is turned off. The measurement data status is set to 4.
Suggestions:
Turn off ALC. For more details, refer to “Automatic level control” on page 93.
C
Can't change while DCI Isolation OFF
This message appears when the DCI measurement range (DCI RND) is
changed when the bias current isolation function is OFF.
Suggestions:
Turn on the Bias current isolation function.
Can't change while 2nd sweep param exists
This message appears when attempting to change or delete the list sweep
parameter from the E4980A/AL’s screen after setting the sweep point for the
second parameter with the GPIB command.
Suggestions:
Use the GPIB command to change the list sweep parameter.
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