User manual

IEEE-488 Reference
2001-900-01 Rev. K / August 2010 4-207
Defaults Power-up NONE
*RST No effect
:SYSTem:PRESet No effect
Query :FEED? [BUFFER,] Query buffer feed
Short-form format: :trac:feed?
Response message: SENS1, CALC1 or NONE
Description This command is used to select the source of readings to be placed in the buffer. With SENSe[1] selected,
raw readings will be placed in the buffer when storage is performed. With CALCulate[1] selected,
calculated math readings (mX+b or PERCENT or NONE) will be placed in the buffer.
With NONE selected, no readings will be placed in the buffer when storage is performed over the bus.
Programming example 10 OUTPUT 716; “:trac:feed calc; feed?”
20 ENTER 716; A$
30 PRINT A$
40 END
Line 10 Two commands in this program message; the first selects calculated math readings for the
buffer, and the second queries the buffer feed.
Line 20 Addresses the Model 2001 to talk.
Line 30 Displays the buffer feed (CALC1).
:[PERCent] [BUFFER,] <n>
:
:AMOunt:[PERCent] [BUFFER,] <n> Specify percent of pre-trigger readings
Parameters <n> = 0 to 100 % of buffer for pre-trigger readings
Format :trac:feed:pret:amo <n>
Defaults Power-up 50%
*RST No effect
:SYSTem:PRESet No effect
Query :[PERCent]? [BUFFER,]
Short-form format: :trac:feed:pret:amo?
Response message: 0 to 100 (%)