Boonton55xxx IVI Driver Reference

IBoonton55xxxTrigger Interface

See Also

Visual Basic

Public Interface IBoonton55xxxTrigger

C#

public interface IBoonton55xxxTrigger

Visual C++

__interface IBoonton55xxxTrigger

Name

Description

Delay

Set or return the trigger delay time in seconds with respect to the trigger for the trigger display location in the LEFT position. Positive values cause the actual trigger to occur after the trigger condition is met. This places the trigger event to the left of the trigger point on the display, and is useful for viewing events during a pulse, some fixed delay time after the rising edge trigger. Negative trigger delay places the trigger event to the right of the trigger point on the display, and is useful for looking at events before the trigger edge.

Edge

Edge trigger configuration interface.

Holdoff

Set or return the trigger holdoff time in seconds. Trigger holdoff is used to disable the trigger for a specified amount of time after each trigger event. The holdoff time starts immediately after each valid trigger edge, and will not permit any new triggers until the time has expired. When the holdoff time is up, the trigger re-arms, and the next valid trigger event (edge) will cause a new sweep. This feature is used to help synchronize the power meter with burst waveforms such as a TDMA or GSM frame. The trigger holdoff resolution is 10 nanoseconds, and it should be set to a time that is just slightly shorter than the frame repetition interval.

HoldoffMode

Sets the holdoff mode to normal or gap holdoff.

Level

Set or return the trigger level for synchronizing data acquisition with a pulsed input signal. The internal trigger level entered should include any global offset and will also be affected by the frequency cal factor. The available internal trigger level range is sensor dependent. The trigger level is set and returned in dBm.

Mode

Set or return the trigger mode for synchronizing data acquisition with pulsed signals.

Position

Set or return the position of the trigger event on displayed sweep.

Source

The signal the power meter monitors for a trigger. It can be channel or one of many other values.

Status

The status of the triggering system.

Vernier

Set or return the fine position of the trigger event on displayed sweep.