Specifications

Chapter 2 Command System RIGOL
M300 Programming Guide 2-49
FETCh?
Syntax
FETCh?
Description Send the readings stored in the non-volatile memory (refer to Appendix C: Non-volatile
Memory) to the output buffer of the instrument without clearing the readings stored in
memory.
Explanation  The FETCh? command will wait until the scan is complete to terminate.
 Each time you start a new scan, the instrument clears all the readings (including the
alarm data) stored in the reading memory from the previous measurement.
Therefore, the readings acquired using the FETCh? command are always from the
most recent scan.
 The format of the return value of this command is affected by the settings of the
FORMat Command Subsystem commands. Depending on the different settings, each
reading may or may not contain the measurement units, time stamp, channel
number and alarm status information.
Return
Format
The query return the readings (the format denpends on the settings of the FORMat
Command Subsystem commands) in the memory in scientific notation. Multiple return
values are separated by commas.
Example CONF:VOLT:DC 20,DEF,(@401:403)
ROUT:SCAN (@401:403)
TRIG:SOUR BUS
INIT
*TRG
FETC?
The query returns +3.719443659E-03,+2.886192029E-03,+2.832327041E-03.
Related
commands
INITiate
ROUTe:SCAN