Agilent Technologies ESA-E Series Programmer's Manual page 332

Error Messages
–199 to –100: Command Errors
–151
Invalid string data
A string data element was expected, but was invalid
(see IEEE 488.2, 7.7.5.2). For example, an END
message was received before the terminal quote
character.
–131
Invalid suffix
The suffix does not follow the syntax described in IEEE
488.2, 7.7.3.2, or the suffix is inappropriate for this
device.
–109
Missing parameter
Fewer parameters were received than required for the
header. For example, the *ESE common command
requires one parameter, so receiving *ESE is not
allowed.
–120
Numeric data error
This error, as well as errors –121 through –129, is
generated when parsing a data element which appears
to be numeric, including non-decimal numeric types.
This particular error message is used if the device
cannot detect a more specific error.
–128
Numeric data not allowed
A legal numeric data element was received, but the
device does not accept one in this position for the
header.
–108
Parameter not allowed
More parameters were received than expected for the
header. For example, the *ESE common command only
accepts one parameter, so receiving *ESE 0,1 is not
allowed.
–112
Program mnemonic too long
The header contains more than twelve characters (see
IEEE 488.2, 7.6.1.4.1).
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