Error Messages (Alphabetical Order) - Agilent Technologies 4294A Operating Manual

Error messages
ADC OVERLOAD
NOTE If an error with a positive error number occurs, only its error message is displayed on the
LCD following the string of "CAUTION:" (in this case, its error number is not displayed).
On the other hand, if an error with a negative error number occurs, "CAUTION: HP-IB error
occurred" is always displayed on the LCD. When error messages are outputted through
GP-IB, their error number and error message are outputted for all errors ("CAUTION:" is
not added). Some messages displayed on the LCD do not have "CAUTION:"; these are not
error messages. Messages without "CAUTION:" are not described here.
Errors with a negative error number are basically general errors for GPIB instruments
defined by IEEE488.2. On the other hand, errors with a positive error number are ones
defined specifically for the Agilent 4294A.
The error message displayed on the LCD display due to the occurrence of an error will not
disappear even if the cause of the error is removed. To clear the error message display,
press the
labels using a hardkey or softkey or when you display a new parameter value in the Set
Parameter Value field.
If a new error occurs, the previously displayed error message is replaced with the new one.
Therefore, even if several errors occur successively at short time intervals, you can only
read the last message. To display and recheck a past message, follow the steps in
"Re-displaying an Instrument Message" on page 300.
This chapter explains the error messages in alphabetical order. They are also described in
the error number order in the Programming Manual.

Error Messages (alphabetical order)

135 ADC OVERLOAD
Due to, for example, a sudden change in the connection of a DUT, the internal circuit
(ADC) is temporarily overloaded. Measurement data when this error occurs is invalid. If
this error often occurs during normal measurements, the instrument may fail. In this case,
Contact your local Agilent Technologies sales office or the company you purchased this
instrument from.
10 ADDITIONAL STANDARDS NEEDED
Before completing measurement of all calibration standards (OPEN, SHORT, LOAD)
required for user calibration or four-terminal pair extension setting, a GPIB command
(CALDON or ECALDON) to calculate error coefficients is sent. The command is invalid.
Finish measuring any remaining calibration standard.
17 BACKUP DATA LOST
This error (check sum error) occurs after losing the contents of the battery-powered backup
430
key. Also, the error message disappears when you call new softkey
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Appendix C