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334 VT1422A Command Reference Chapter 7
[SENSe]
• Related Commands: SENSE:DATA:FIFO:HALF?, ROUT:SEQ:DEFine
• *RST Condition: FIFO is empty
• Use VXIplug&play function: hpe1422_readFifo_Q(...)
Usage DATA:FIFO?
return all FIFO values until
measurements complete and FIFO empty
Command
Sequence
set up scan list/algorithms and trigger
SENSE:DATA:FIFO:ALL?
now execute read statement
read statement does not complete until
triggered measurements are complete
and FIFO is empty
[SENSe:]DATA:FIFO:COUNt?
[SENSe:]DATA:FIFO:COUNt? returns the number of values currently in the
FIFO buffer.
Comments • DATA:FIFO:COUNT? is used to determine the number of values to acquire with
the DATA:FIFO:PART? command.
• Returned Value: Numeric 0 through 65,024. The data type is int32.
• Related Commands: DATA:FIFO:PART?
• *RST Condition: FIFO empty
• Use VXIplug&play function: hpe1422_sensDataFifoCoun_Q(...)
• Send with VXIplug&play Function: hpe1422_cmdInt32_Q(...)
Usage DATA:FIFO:COUNT?
Check the number of values in the
FIFO buffer
[SENSe:]DATA:FIFO:COUNt:HALF?
[SENSe:]DATA:FIFO:COUNt:HALF? returns a 1 if the FIFO is at least half full
(contains at least 32,768 values) or 0 if FIFO is less than half-full.
Comments • DATA:FIFO:COUNT:HALF? is used as a fast method to poll the FIFO for the
half-full condition.
• Returned Value: Numeric 1 or 0. The data type is int16.
• Related Commands: DATA:FIFO:HALF?
• *RST Condition: FIFO empty
• Send with VXIplug&play Function: hpe1422_cmdInt16_Q(...)
Command
Sequence
DATA:FIFO:COUNT:HALF?
poll FIFO for half-full status
DATA:FIFO:HALF?
returns 32768 values