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:RECover?
FETCh[<chan>]:RECover? returns readings from the specified channel in the
format set by the FORMat:DATA command. This command is used to fetch data
that was saved during a power failure and which cannot be fetched by the
FETCh<chan >? command due to the "Data corrupt or stale" error.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
Units
chan
numeric 1 | 2 none
Comments • Executable when initiated: No
• Coupled Command: No.
• As mentioned above, this command is intended to retrieve battery backed data
after a power failure. Attempting to use FETCh<chan >? in this case may cause
an error if any measurement parameters were changed after power is returned.
With FETCh:RECover? it is also possible to retrieve readings that were taken
previously, but which are not accessable to FETCh? because of a setting change
or reset.
• If error 1018 "Battery backed data corrupt" occurs, FETCh:RECover? will not
return the readings since a problem with the data was detected. If the data must be
recovered, use the DIAGnostic:FETCh? command.
• Related Commands: INITiate:IMMediate, ARM:STARt:COUNt,
TRIGger:STARt:COUNt, SENSe:SWEep:OFFSet:POINts:
• *RST Condition: none
Example Recovering readings in memory
FETC1:REC? Do a fetch on the data on channel 1. The
battery must be enabled for this to work.
FETCh[
<chan>
]:RECover?
FETCh[
<chan>
] Subsystem Command Reference 227