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Operating and Programming 3
L4400 User’s Guide 77
• You can specify a sweep count in conjunction with a trigger count and a
sample count. The three parameters operate independent of one another,
and the total number of readings returned will be the product of the three
parameters.
• You can store at least 500,000 readings in 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.
• The CONFigure and MEASure? commands automatically set the sweep
count to 1 sweep.
• The instrument sets the sweep count to 1 after a Factory Reset
(*RST command). An Instrument Preset (SYSTem:PRESet command) or
Card Reset (SYSTem:CPON command) does not change the setting.
The following command sets the sweep count:
SWEep:COUNt
Channel Delay
Usage:
• L4421A 40- Channel Armature Multiplexer
You can control the pacing of a scan sweep by inserting a delay between the
L4421A channels in the scan list (useful for high- impedance or
high- capacitance circuits). The delay occurs following relay closure and any
inherent settling time, and before the generation of the “channel closed”
signal that would externally trigger a separate DMM (see “Scanning with
External Instruments”).