HP 8921A Programmer's Manual page 586

Error −286
Error −300
Error −310
Error −311
Error −312
Error −313
Error −314
Error −315
Error −330
Error −350
586
Program runtime error
Device-specific error
This code indicates only that a Device-Dependent Error as defined in IEEE 488.2,
11.5.1.1.6 has occurred.
System error
Indicates that some error, termed "system error" by the device, has occurred.
Memory error
Indicates that an error was detected in the device's memory.
PUD memory lost
Indicates that the protected user data saved by the *PUD command has been lost.
Calibration memory lost
Indicates that nonvolatile calibration data used by the *CAL? command has been lost.
Save/recall memory lost
Indicates that the nonvolatile data saved by the *SAV command has been lost.
Configuration memory lost
Indicates that nonvolatile configuration data saved by the device has been lost.
Self-test failed
Queue overflow
This code indicates that there is no room in the queue and an error occurred but was not
recorded. This code is entered into the queue in lieu of the code that caused the error.