Agilent Technologies E5071C, Service Manual

Page: 375 / 385

Appendix E 375
Messages
Invalid character
E. Message
s
If the type of calibration is not specified or not correct when partial overwrite is executed
with the GPIB command, this error occurs. This error does not occur for operation with
front keys.
-101 Invalid character
An invalid character exists in the program message character string.
-141 Invalid character data
An invalid character is found in the character data element, or the parameter received is
not valid.
-121 Invalid character in number
A character that is invalid for the data type subject to syntactic analysis has been received.
For example, a letter is found in a decimal numeric value or a numeric character “9” in
octal data.
500 Invalid equation expression
This error occurs when the invalid equation is specified in the equation of the equation
editor.
501 Invalid equation label
This error occurs when the invalid equation label is specified in the equation of the
equation editor.
A space is not available for the equation label.
-171 Invalid expression
The expression-data element is invalid (see 7.7.7.2, IEEE488.2). Parentheses are not
paired, or illegal characters are used, for example.
-103 Invalid separator
The parser (a syntactic analysis program) had been expecting a delimiter, but a character
that is not a delimiter has been sent.
-151 Invalid string data
Character string data has been expected, but the character string data that appears is invalid
for some reason (see 7.7.5.2, IEEE488.2). The END message is received before the ending
quotation mark character appears, for example.
-131 Invalid suffix
The suffix does not comply with the syntax defined in 7.7.3.2, IEEE488.2. Or it does not
suit E5071C.
L
53 Log sweep requires 2 octave minimum span
The span of sweep range is not satisfied the requirement for logarithmic sweep. The sweep
type is automatically changed to linear sweep when this error occurs.
For example, this error occurs when, with the start and stop frequency are set 1 MHz and 2
MHz respectively, the sweep type is changed to logarithmic sweep.
Set the stop frequency to more than four times as many as the start frequency. And then
select logarithmic sweep.