HP 8921A Programmer's Manual page 577

Error −110
Error −111
Error −112
Error −113
Error −114
Error −120
Error −121
Error −123
Error −124
Command header error
An error was detected in the header.
Header separator error
A character which is not a legal header separator was encountered while parsing the
header.
Program mnemonic too long
The header contains more than twelve characters (see IEEE 488.2,7.6.1.4).
Undefined header
The header is syntactically correct, but it is undefined for this specific device. For
example, *XYZ is not defined for any device.
Header suffix out of range
Indicates that a nonheader character has been encountered in what the parser expects is a
header element.
Numeric data error
This error, as well as errors −121 through −128, are generated when parsing a data element
which appears to be numeric, including the nondecimal numeric types.
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.
Exponent too large
The magnitude of the exponent was larger than 32000 (see IEEE 488.2, 7.7.2.4.1).
Too many digits
The mantissa of a decimal numeric data element contained more than 255 digits excluding
leading zeros (see IEEE 488.2, 7.7.2.4.1).
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