Agilent Technologies Switch/Measure manual Scan Trigger Source, Interval Scanning

2Features and Functions

Scan Trigger Source

You can configure the event or action that controls the onset of each sweep through the scan list (a sweep is one pass through the scan list):

•You can set the instrument’s internal timer to automatically scan at a specific interval. You can also program a time delay between channels in the scan list (see “Channel Delay” on page 53).

•You can manually control a scan by repeatedly pressing the Scan (Measure) key from the front panel.

•You can start a scan by sending a software command from the remote interface (MEASure? or INITiate command).

•You can start a scan when an external TTL trigger pulse is received.

Interval Scanning

In this configuration, you control the frequency of scan sweeps by selecting a wait period from the start of one trigger to the start of the next trigger (called the trigger- to- trigger interval). If the scan interval is less than the time required to measure all channels in the scan list, the instrument will scan continuously, as fast as possible (no error is generated).

Trigger 1	Sweep 1	Sweep 2		Trigger 2
			Sweep	n

. . .

t

Trigger Timer

(0 to 359,999 seconds)

Trigger-to-trigger interval

•You can set the scan interval to any value between 0 seconds and 99:59:59 hours (359,999 seconds), with 1 ms resolution.

•Once you have initiated the scan, the instrument will continue scanning until you stop it or until the trigger count is reached. See “Trigger Count” on page 49 for more information.

•Mx+B scaling and alarm limits are applied to measurements during a scan and all data is stored in non- volatile memory.

•The CONFigure and MEASure? commands automatically set the scan interval to immediate (0 seconds) and the scan count to 1 sweep.

46 34980A User’s Guide