Error Messages 
 
M370430-01 Rev B  B-3 
Command Error List 
An error in the range [-199, -100] indicates that an IEEE 488.2 
syntax error has been detected by the instrument's parser. The 
occurrence of any error in this class causes the command error bit 
(bit 5) in the Event Status Register to be set. 
Table B-1  Command Error List 
Error Message Description 
Command error This is the generic syntax error 
Syntax Error An unrecognized command or data type was 
encountered; for example, a string was received when the device 
does not accept strings. 
Parameter not Allowed More parameters were received than 
expected for the header; for example, the *SRE common 
command only accepts one parameter, so receiving *SRE 0,1 is 
not allowed. 
Missing Parameter Fewer parameters were received than 
required for the header; for example, the *SAV common 
command requires one parameter, so receiving *SAV is not 
allowed. 
Command header error An error was detected in the header. 
Undefined header The header is syntactically correct, but it is 
undefined for this specific device; for example, *XYZ is not 
defined for any device. 
Invalid character in number An invalid character for the data 
type being parsed was encountered; for example, an alpha in a 
decimal numeric or a “9” in octal data. 
Character data error This error is generated when parsing a 
character data element. 
String data error This error is generated when parsing a string 
data element fails. 
Invalid string data A string data element was expected, but was 
invalid for some reason (see IEEE 488.2, 7.7.5.2); for example, 
an END message was received before the terminal quote 
character.