Keithley S46, Instruction Manual

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3-26 Document number: S46-901-01 Rev. F / March 2011
Section 3: Operation S46/S46T/S46L Microwave Switch System Instruction Manual
*TST? - self-test query
Run self test and read result
Use this query command to perform a self-test for the system.
When the instrument is addressed to talk, the coded result is sent from the output queue to the
computer. A returned value of one (1) indicates that the test passed, and a value of zero (0)
indicates that the test failed.
*WAI - wait-to-continue
Wait until previous commands are completed
Effectively, the
*WAI
command is a no-op (no operation) for the relay unit and, therefore, does not
need to be used.
Two types of device commands exist:
Sequential commands: A command whose operations are allowed to finish before the next
command is executed.
Overlapped commands: A command that allows the execution of subsequent commands while
device operations of the overlapped command are still in progress.
The
*WAI
command is used to suspend the execution of subsequent commands until the device
operations of all previous overlapped commands are finished. The
*WAI
command is not needed
for sequential commands.
Errors
Table 3-14 summarizes error and status messages that can be read with
:SYST:ERR?
Table 3-14
Error and status message
Number Description Event
-440 Query UNTERMINATED after indefinite response EE
-430 Query DEADLOCKED EE
-420 Query UNTERMINATED EE
-410 Query INTERRUPTED EE
-350 Queue overflow SYS
-330 Self-test failed EE
-260 Expression error EE
-241 Hardware missing EE
-224 Illegal parameter value EE
-223 Too much data EE
-222 Data out of range EE
-221 Settings conflict EE
-220 Parameter error EE
-215 Arm deadlock EE
-214 Trigger deadlock EE
-213 Initialization ignored EE
-212 Arm ignored EE
-211 Trigger ignored EE
-210 Trigger error EE
-200 Execution error EE
EE = error event
SE = status event
SYS = system error event