3
Features and Functions
194
Keysight 34980A Mainframe User’s Guide
*SAV 2
MEM:STATE:RECALL:SELECT 2
MEM:STATE:RECALL:AUTO ON
Error Conditions
When the front panel ERROR annunciator turns on, one or more command syntax
or hardware errors have been detected. A record of up to 20 errors can be stored
in the instrument’s
error queue
. Each remote interface I/O session (i.e., GPIB,
USB, LAN, etc.) has its own interface-specific error queue. Errors appear in the
error queue of the I/O session that caused the error (the front panel reports errors
from all I/O sessions).
For a complete listing of the error messages, see the Keysight 34980A
Programmer’s Reference
Help file, located on the
Product Reference CD-ROM
shipped with the instrument.
– The instrument beeps once each time a command syntax or hardware error is
generated.
– A special
global
error queue holds all power-on and hardware-related errors
(e.g., over-temperature, Safety Interlock, etc.).
– Errors are retrieved in first-in-first-out (FIFO) order. The first error returned is
the first error that was stored. Errors are cleared as you read them. Once you
have read all of the interface-specific errors, the errors in the global queue are
retrieved.
– Errors are cleared as you read them. When you have read all errors from the
interface-specific and global error queues, the ERROR annunciator turns off
and the errors are cleared.
– If more than 20 errors have occurred, the last error stored in the queue (the
most recent error) is replaced with -350,“Error queue overflow”. No additional
errors are stored until you remove errors from the queue. If no errors have
occurred when you read the error queue, the instrument responds with +0,“No
error”.
– The front panel reports errors from all I/O sessions as well as the global error
queue.
– The interface-specific and global error queues are cleared by the
*CLS
(Clear
Status) command and when power is cycled. The errors are also cleared when
you read the error queue. The error queue is not cleared by a Factory Reset
(
*RST
command) or an Instrument Preset (
SYSTem:PRESet
command).
