Specifications
User Manual 301/302 
defined by the generator. 
-224,”Illegal parameter value”. A discrete parameter was received 
which was not a valid choice for the command. An invalid parameter 
choice may have been used. 
-300,”Device-specific-error”. This is the generic device-dependent 
error for the instrument when it cannot detect more specific errors. A 
device- specific error as defined in IEEE-488.2 has occurred. 
-311,”Memory error”. Indicates that an error was detected in the 
instrument’s memory. 
-350,”Queue Overflow”. The error queue is full because more than 30 
errors have occurred. No additional errors are stored until the errors 
from the queue are removed. The error queue is cleared when power 
has been shut off, or after a *CLS command has been executed. 
-410,”Query INTERRUPTED”. A command was received which sends 
data to the output buffer, but the output buffer contained data from a 
previous command (the previous data is not overwritten). The output 
buffer is cleared when power is shut off or after a device clear has 
been executed. 
Device-Specific 
Commands
The Model 301/302 conforms to the 1993.0 version of the SCPI 
standard. Some of the commands used are not included in the 1993.0 
version. However, these commands are designed with the SCPI 
standard in mind and they follow all of the command syntax rules 
defined by the standard. Table 4-1 lists all device-specific commands 
that were designed specifically for the Model 301/302 as not confirmed 
SCPI 1993.0 commands.
SCPI Command Reference 
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