Technical data

Chapter 2 27
Analyzer List Sequencer Parameter Definitions
Acquisition Parameters
Analyzer List Sequencer Parameter
Definitions
10: Acquisition Duration
This parameter sets the total time for the acquisition (that is, the interval during which the test set is
acquiring IQ samples); the range is 0 to 10 seconds.
If a pre-trigger is set, then the acquisition duration includes the pre-trigger time. A pre-trigger is set by
setting a negative Input Trigger Delay. For no-measurement acquisitions (which are used only to
coordinate the triggering of the test set’s source and analyzer) the Duration should be set to minimum,
and the Meas Bitmap for the single analysis step in the acquisition should be set to zero. The acquisition
Transition Time should then be set to the remaining time that is required for the no-measurement
acquisition.
NOTE Although different time units can be used in setting the acquisition duration from the front
panel, the parameter value as entered in the sequence is always in ms.
The key path for setting the Acquisition Duration from the front panel menus is:
[Meas Setup], Acquisition Setup, Acquisition Duration
11: Input Trigger (also known as Input Trigger Type)
This parameter specifies how the acquisition is to be triggered. The choices are:
• IMMediate (equivalent to Free Run); the acquisition is triggered immediately
• VIDeo; the acquisition is triggered when the IF envelope of the RF input reaches the level defined by
the Input Trigger Level parameter
• INTernal; the acquisition is triggered from the test set’s source
• EXTernal1; the acquisition is triggered from the TRIG IN 1 port at the front of the test set
• EXTernal2; the acquisition is triggered from the TRIG IN 2 port at the front of the test set
The key path for selecting the Input Trigger Type from the front panel menus is:
[Meas Setup], Acquisition Setup, Input Trigger Type