AMETEK Lx Series II Programming Manual - Manual (Page 142)

Programming Manual Lx \ Ls Series II
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6.7.6 Synchronizing Output Changes to a Reference Phase Angle
An output transient normally occurs immediately when the trigger signal is received, or after the
delay has expired if a trigger delay has been set. For some applications it is desirable that the
transient is synchronized with a particular phase of the output waveform such as the zero crossing
point or the positive peak.
To synchronize the start of a transient with a particular phase of the internal phase reference, you
must select PHASE as the trigger source. Use:
TRIGger:SEQuence2:SOURce PHASe or
TRIGger:SYNChronize:SOURce PHASe
To select the desired phase, use:
TRIGger:SEQuence2:PHASe 90 or
TRIGger:SYNChronize:PHASe 90
which specifies the 90 degree phase angle of the internal phase reference as the point where the
transient begins.
To turn off transient phase synchronization, use:
TRIGger:SYNChronous:SOURce IMMediate
When IMMediate is selected, the trigger system transitions through the Delaying and Wait-for-
sync states and goes directly to the Output state. This is the parameter selected at *RST.
6.7.7 Generating Triggers
Providing that you have specified the appropriate trigger source, you can generate triggers as
follows:
Single Triggers
By sending one of the following over the IEEE-488:
TRIGger:IMMediate
*TRG
a group execute trigger
By applying a signal with a high-to-low transition to the Trig In1 SMA connector.
Continuous Triggers
By sending the following commands over the IEEE-488:
TRIGger:SEQuence1:SOURce IMMediate
INITiate:CONTinuous:SEQuence1 ON
When the trigger system enters the Output Change state upon receipt of a trigger (see Figure
6-2), the triggered functions are set to their programmed trigger levels. When the triggered actions
are completed, the trigger system returns to the Idle state.
6.7.8 Specifying a Dwell Time for Each List Point
Each voltage and current list point has an associated dwell time specified by:
LIST:DWELl {,}