VXi VT1422A 사용자 설명서
VT1422A Command Reference 337
[SENSe]
[SENSe:]DATA:FIFO:PART?
[SENSe:]DATA:FIFO:PART? <n_values>
returns <n_values> from the FIFO
buffer.
Parameters
Comments
•
Use the DATA:FIFO:COUNT? command to determine the number of values in
the FIFO buffer.
•
The format of values returned is set using the FORMat[:DATA] command.
•
Returned Value: ASCII values are returned in the form
±1.234567E±123.
For example 13.325 volts would be +1.3325000E+001. Each value is followed
by a comma (,). A line feed (LF) and End-Or-Identify (EOI) follow the last value.
The data type is a string array.
by a comma (,). A line feed (LF) and End-Or-Identify (EOI) follow the last value.
The data type is a string array.
REAL 32, REAL 64 and PACK 64, values are returned in the IEEE-488.2-1987
Definite Length Arbitrary Block Data format. This data return format is
explained in “Arbitrary Block Program and Response Data” on page 233.
For REAL 32, each value is 4 bytes in length (the data type is a float32 array).
For REAL 64 and PACK 64, each value is 8 bytes in length (the data type is a
float64 array).
Definite Length Arbitrary Block Data format. This data return format is
explained in “Arbitrary Block Program and Response Data” on page 233.
For REAL 32, each value is 4 bytes in length (the data type is a float32 array).
For REAL 64 and PACK 64, each value is 8 bytes in length (the data type is a
float64 array).
Note
Values which are a positive overvoltage return IEEE +INF and a negative overvoltage
return IEEE -INF (see Table 7-1 on page 294 for actual values for each data format).
return IEEE -INF (see Table 7-1 on page 294 for actual values for each data format).
•
Related Commands: DATA:FIFO:COUNT?
•
*RST Condition: FIFO buffer empty
•
Use VXIplug&play function: hpe1422_readFifoFast_Q(...)
Usage
DATA:FIFO:PART? 256
return 256 values from FIFO
Parameter
Name
Parameter
Type
Range of
Values
Default
Units
n_values
numeric (int32)
1 - 2,147,483,647
none