HP 8920A Programmer's Manual page 581

Error −150
Error −151
Error −152
Error −158
Error −160
Error −161
Error −168
Error −170
String data error
This error, as well as errors −151 through −158, are generated when parsing a string
element.
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.
Parity error
Parity error
String data not allowed
A string data element was encountered but was not allowed by the device at this point in
parsing.
Block data error
This error, as well as errors −161 through −168, are generated when parsing a block data
element.
Invalid block data
A block data element was expected, but was invalid for some reason (see IEEE 488.2
7.7.6.2). For example, an END message was received before the length was satisfied.
Block data not allowed
A legal block data element was encountered but was not allowed by the device at this
point in parsing.
Expression error
This error, as well as errors −171 through −178, are generated when parsing an expression
data element.
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