VXi VT1529A/B 사용자 설명서
294 VT1422A Command Reference
FORMat
Note
*TST? leaves the instrument in its power-on reset state. This means that
the ASC,7 data format is set even if something else had been set before executing
*TST?. If the FIFO needs to read for test information, set the format after *TST? and
before reading the FIFO.
the ASC,7 data format is set even if something else had been set before executing
*TST?. If the FIFO needs to read 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.
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.
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.
Table 7-1. Data Formats
•
Send with VXIplug&play Function: hpe1422_cmd(...)
Usage
FORMAT REAL
Set format to IEEE 32-bit Floating Point
FORM REAL, 64
Set format to IEEE 64-bit Floating Point
FORMAT ASCII, 7
Set format to 7-bit ASCII
Format
IEEE Term
Value
Meaning
ASCii
+INF
+9.9E37
Positive Overload
-INF
-9.9E37
Negative Overload
NaN
+9.91E37
No Reading
REAL,32
+INF
7F800000
16
Positive Overload
-INF
FF800000
16
Negative Overload
NaN
7FFFFFFF
16
No Reading
REAL,64
+INF
7FF000...00
16
Positive Overload
-INF
FFF000..00
16
Negative Overload
NaN
7FFFFF...FF
16
No Reading
PACKed,64
+INF
47D2 9EAD 3677 AF6F
16
(+9.0e37
10
)
Positive Overload
-INF
C7D2 9EAD 3677 AF6F
16
(-9.0e37
10
)
Negative Overload
NaN
47D2 A37D CED4 6143
16
(+9.91e37
10
)
No Reading