Specifications

FETCh?
Subsystem Syntax FETCh?
The FETCh? command returns readings stored in VME memory.
Comments
·
This command is only available in systems using an Agilent/HP E1405B/06A or
command module.
·
FETCH? does not alter the readings stored in VME memory. Only the *RST or
INIT… commands will clear the readings in VME memory.
·
The format of readings returned is set using the FORMat[:DATA] command.
·
Returned Value: REAL,32, REAL,64, and PACK,64, readings are returned in
the IEEE-488.2-1987 Definite Length Arbitrary Block Data format. This data
return format is explained in “Arbitrary Block Program Data” on page 180 of this
chapter. For REAL,32, readings are 4 bytes in length. For REAL 64 and PACK,
64, readings are 8 bytes in length.
·
PACKed,64 returns the same values as REAL,64 except for Not-a-Number
(NaN), IEEE +INF, and IEEE -INF. The NaN, IEEE +INF, and IEEE -INF values
returned by PACKed,64 are in a form compatible with HP Workstation BASIC
and HP BASIC/UX. Refer to the FORMat command for the actual values for
NaN, +INF, and -INF.
·
ASCii is the default format.
·
ASCII readings are returned in the form ±1.234567E±123. For example
13.325 volts would be +1.3325000E+001. Each reading is followed by a comma
(,). A line feed (LF) and End-Or-Identify (EOI) follow the last reading.
·
Related Commands: MEMory Subsystem, FORMat[:DATA]
·
*RST Condition: MEMORY:VME:ADDRESS 240000;
MEMORY:VME:STATE OFF; MEMORY:VME:SIZE 0
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