– You can store at least 100,000 readings in reading memory and all readings are automatically time stamped. If
memory overflows, the new readings will overwrite the first (oldest) readings stored; the most recent readings are
always preserved. You can read the contents of memory at any time, even during a scan. Reading memory is not
cleared when you read it.
– Each time you start a new scan, the instrument clears all readings (including alarm data) stored in reading
memory from the previous measurement. Therefore, the contents of memory are always from the most recent
scan.
– If you abort a scan that is running (ABORt command), the instrument will terminate any reading in progress (read-
ings are not cleared from memory). If a scan is in progress when the command is received, the scan will not be
completed and you cannot resume the scan from where it left off. Note that if you initiate a new scan, all readings
are cleared from memory.
– The CONFigure and MEASure? commands overwrite the scan list.
– The present scan list is stored in non-volatile memory and will be retained when power is turned off.
ROUTe:SCAN:SIZE?
Returns the number of channels in the scan list as defined by the ROUTe:SCAN command.
Parameter Typical return
(none) Number of channels as a signed integer from 0 to maximum number of
scanned channels (up to 120 channels)
Returns the number of channels in the scan list:
ROUT:SCAN (@101:120)
ROUT:SCAN:SIZE?
Typical response: +20
– The present scan list is stored in non-volatile memory and will be retained when power is turned off.
Keysight DAQ970A/DAQ973A Programming Guide 215
2 SCPI Programming
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