FETCh[<chan>]:RECover?

: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

Parameter

Range of

Default

Name

Type

Values

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>] Subsystem

Command Reference 227

Page 227
Image 227
HP E1429A manual FETChchanRECover?, ∙ *RST Condition none Example Recovering readings in memory