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GPIB and Serial ActiveX Control Parsers Interpret Some Negative Numbers as Positive

Primary Software: Measurement Studio>>Visual Basic Support
Primary Software Version: 6.0
Primary Software Fixed Version: N/A
Secondary Software: Driver Software>>NI-488.2

Problem:
Parsers in the GPIB and Serial ActiveX controls do not correctly interpret negative numbers that do not have at least one digit to the left of the decimal point. For example:

Input String	Parser Output
"0.1"	0.1
".1"	0.1
"-.1"	0.1 (Negative number converted into a positive number)
"-0.1"	-0.1

If you create a new task using a "<number>" token, the "-.1" input is not converted into a positive number but there is simply No output.

Solution:
The parsers built in the GPIB and Serial ActiveX controls require that negative numbers have at least one digit to the left of the decimal point. Make sure that all negative numbers in your input string comply with this requirement. For example, instead of having an input string of "-.5", you should have "-0.5".

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Report Date: 03/22/2004
Last Updated: 09/17/2004
Document ID: 37I9BAMT

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