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Model 2790 SourceMeter
Figure 14-2
IEEE-754 data formats
Header
# 0
A. Single precision data format (32 data bits)
Header
# 0
B. Double precision data format (64 data bits)
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Byte 1
7
0 7
s
e
s = sign bit (0 = positive, 1 = negative)
e = exponent bits (8)
f = fraction bits (23)
Normal byte order shown. For swapped byte order, bytes sent
in reverse order: Header, Byte 4, Byte 3, Byte 2, Byte 1.
The Header is only sent once for each measurement conversion.
Byte 1
7
0 7
s
e
Bytes 3, 4, 5, and 6 not shown.
s = sign bit (0 = positive, 1 = negative)
e = exponent bits (11)
f = fraction bits (52)
Normal byte order shown. For swapped byte order, bytes sent
in reverse order: Header, Byte 8, Byte 7 -- Byte 1.
The Header is only sent once for each measurement conversion.
Byte 2
Byte 3
0 7
f
Byte 2
Byte 7
0
7
Byte 4
0 7
0
Byte 8
0 7
0
f
14-5
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