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Usage
FORMat[:DATA]?
Comments
Chapter 6
Note
*TST? leaves the instrument in its power-on reset state. This means that the
ASC,7 data format is set even if you had it set to something else before
executing *TST?. If you need to read the FIFO for test information, set the
format after *TST? and before reading the FIFO.
•
Related Commands: [SENSe:]DATA:FIFO:...?, [SENSe:]DATA:CVTable?,
MEMory subsystem, and FETCh?, Also see how DIAG:IEEE can modify
REAL,32 returned values.
•
*RST Condition: ASCII, 7
•
After *RST/Power-on, each channel location in the CVT contains the
IEEE-754 value "Not-a-number" (NaN). Channel readings which are a
positive overvoltage return IEEE +INF and a negative overvoltage return IEEE
-INF. The NaN, +INF, and -INF values for each format are shown in the
following table.
Format
IEEE Term
ASCii
+INF
-INF
NaN
REAL,32
+INF
-INF
NaN
REAL,64
+INF
-INF
NaN
PACKed,64
+INF
-INF
NaN
FORMAT REAL
FORM REAL, 64
FORMAT ASCII, 7
returns the currently set response data format for readings.
FORMat[:DATA]?
•
Returned Value: Returns REAL, +32 | REAL, +64 | PACK, +64 | ASC, +7.
Value
+9.9E37
-9.9E37
+9.91E37
7F800000
16
FF800000
16
7FFFFFFF
16
7FF000...00
16
FFF000..00
16
7FFFFF...FF
16
47D2 9EAD 3677 AF6F
16
C7D2 9EAD 3677 AF6F
16
47D2 A37D CED4 6143
16
Table 6-1. Data Formats
Set format to IEEE 32-bit Floating Point
Set format to IEEE 64-bit Floating Point
Set format to 7-bit ASCII
HP E1415 Command Reference
FORMat
Meaning
Positive Overload
Negative Overload
No Reading
Positive Overload
Negative Overload
No Reading
Positive Overload
Negative Overload
No Reading
(+9.0e37
)
Positive Overload
10
(-9.0e37
)
Negative Overload
10
(+9.91e37
)
No Reading
10
207
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