Agilent Technologies L4400 - Manual (Page 88)

76 L4400 User’s Guide
3 Operating and Programming
• 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.
• You can specify a trigger count in conjunction with a sweep count.
The two parameters operate independent of one another, and the total
number of readings returned will be the product of the two
parameters.
• The CONFigure and MEASure? commands automatically set the scan
trigger count to 1.
• The instrument sets the scan trigger 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 trigger count:
TRIGger:COUNt
To configure a continuous scan, send TRIG:COUNT INFINITY .
Sweep Count
Usage:
• L4450A 64- Bit Digital I/O (digital input, counter channels only)
• L4452A Multifunction Module (digital input, totalizer channels only)
The sweep count sets the number of sweeps per trigger event during a
scan (a sweep is one pass through the scan list).

Figure 3-11. Sweep Count Diagram.
• The sweep count is valid only while scanning. If no channels have
been assigned to the scan list, the specified sweep count is ignored
(no error is generated).
t
Sweep 1 Trigger
Sweep Count
(1 to 500,000 sweeps)
Sweep 2 Sweep
n
Trigger
. . .