Agilent Technologies L4400 manual Sweep Count Diagram

3Operating 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).

Trigger	Sweep 1	Sweep 2	Sweep	n	Trigger
		. . .
					t
		Sweep Count
	(1 to 500,000 sweeps)

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).

76 L4400 User’s Guide