VXi VT1529A/B Benutzerhandbuch

returns readings stored in VME memory. 

•

This command is only available in systems using an Agilent/HP E1405B/06A 

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 and Response Data” on 
page 233. 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 Workstation BASIC and 
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