Ametek Lx Series II Programming Manual Instrukcja Użytkownika Pobierz pdf (Strona 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 <n> {,<n>}

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Ametek Lx Series II Programming Manual Instrukcja Użytkownika Strona 142