Selects toggled operation, Toggling | Agilent Technologies 6050A

HPSL Command	Description
TRIG:SOUR EXT	Selects the external trigger input source.
TRAN:MODE TOGG	Selects toggled operation.
CURR 5	Sets main current level to 5 amps.
CURR:TLEV 10	Sets transient current level to 10 amps.
TRAN ON	Turns on transient operation.

Figure 2-7 shows the waveform that would result for this toggled transient operation example. Operation is similar to that described for continuous and pulse operation, except that each time a trigger is received the input alternates between the main and transient current levels.

Figure 2-7. Toggled Transient Operation

Triggered Operation

The Electronic Load has various triggering modes to allow synchronization with other test equipment or events. The triggering circuits are located in the mainframe, and all modules receive the trigger simultaneously (although each module is programmed individually as to what operation, if any, will be triggered. As described previously, triggering can be used for the following applications:

Triggering a preset level	Transfers all pending preset levels to the actual level. For the presently active mode, the
	new level appears at the input. For the modes which are not presently active, the preset
	levels will not take effect at the input until the applicable mode becomes active.
Triggering a transient pulse	Generates a transient pulse of programmable width when pulsed transient operation is in
	effect.
Toggling	Changes the input between the main level and the transient level when toggled transient
	operation is in effect.

Three triggering methods are available over the GPIB: the GET function, the *TRG common HPSL command, and the TRIG subsystem HPSL command (refer to Agilent Electronic Loads Programming Reference Guide ). The HPSL TRIG subsystem allows you to select either the ac line frequency, internal timer, or TRIG command as the trigger source. There is also a TRIGGER connector on the rear panel for external trigger inputs. Triggering cannot be done via the front panel.

*TRG and the TRIG command are both synchronous with other commands; that is, the modules are not triggered until pending operations are completed. GET, external triggers, ac-line triggers, and internal-timer triggers are all asynchronous; that is, the modules are triggered as soon as the trigger signal is received.

If the ac line is selected via the GPIB as the trigger source, triggers will be generated once for each cycle of ac input power. An ac line frequency of 60 Hz produces a trigger period of 16.67 ms; 50 Hz line frequency produces a trigger

period of 20 ms.

24 Operation Overview

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Agilent Technologies 6050A Selects the external trigger input source, Selects toggled operation

Models: 6051A 6050A

HPSL Command

Selects the external trigger input source.