4601 I-V Meter Operation Manual
6.5.5 Binary Output Format
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6.5.5
Binary Output Format
When the binary output format is selected, DC measurement data and measurement data in the measure-
ment memories are output in IEEE 488.2 “Definite Length Block Response Data Format.”
Internal latched data is output as it is as measurement data.
This data is latched as IEEE 754 double-precision floating-point data (8 bytes).
IEEE 754 floating-point arithmetic
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The base is 2. The base is not included in data.
•
The mantissa is set to 1 or more and less than 2. (Normalization)
•
“0” is represented by setting all the bits of the mantissa and the exponent to “0”.
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The mantissa and the exponent are represented in binary.
•
The sign bit 0 is for positive and 1 is for negative.
When the binary output format is selected, the following rules are applied regardless of the settings.
•
The headers are not output.
•
The string delimiters are not output.
•
EOI is output as a block delimiter.
The 4601 cannot output binary data through the USB interface for the convenience of CPU-CPU commu-
nication. If the USB interface is selected when the binary output is selected, the output format will be forc-
ibly switched to ASCII output format.
Double-precision floating-point format (64 bits)
Exponent
(11 bits)
Fraction
(52 bits)
Sign (1 bit)
Exponent part: Add 1023 to the actual exponent.
Mantissa part: Omit 1 of the integer part.
