Agilent Technologies 6843A, 6834B, 6814B manual Using Transient Voltage Modes, Step Transient

4 - Front Panel Operation

4 - Using Transient Voltage Modes

The ac source voltage can be programmed in the following transient operating modes:

STEP	causes the output to permanently change to its triggered value.
PULSE	causes the output to change to its triggered value for a specific time, as determined by the
	Pulse menu parameters.
LIST	causes the output to sequence through a number of values, as determined by points entered
	in the List menu.
FIXED	disables transient operation for the selected function.

Step Transient

The Voltage Menu lets you specify an alternate or triggered voltage level that the ac source will apply to the output when it receives a trigger. Because the default transient voltage level is zero volts, you must first enter a triggered voltage before you can trigger the ac source to change the output amplitude. Refer to Chapter 4 of the Programming Guide for more information about programming triggers.

In the following example, the voltage output is set to 120 Vrms and then stepped down to 102 Vrms.

	Action	Display
1.	On the Function keypad, press Output On/Off to enable the output. The Dis	0 V 60 Hz
	annunciator will go off.
2.	Press Voltage to access the Voltage Menu. On the Entry keypad, press 1 2 0 Enter.	VOLT	120
3.	Access the Voltage Menu again and press  to access the triggered voltage	VOLT:T 0
	command.
4.	On the Entry keypad, press 1 0 2 Enter.	VOLT:T	102
5.	Access the Voltage Menu again and press  to access the voltage mode command. It	VOLT:M	STEP
	should be in the default FIXED mode. An ac source function in the FIXED mode
	does not respond to triggers. On the Entry keypad, press ↓ or ° to scroll through
	the mode parameters. When you have STEP, press Enter.
6.	Press Trigger Control and Enter. This initiates (or enables) one immediate trigger	INIT:IMMED
	action.
7.	Press Shift Trigger. This sends the ac source an immediate trigger signal to change	102 V 60 HZ
	the output voltage. The triggered voltage value now becomes the VOLT value.

On three-phase ac sources the voltage steps are phase selectable. You can output a different voltage step for each phase. To do this, use Phase Select to first choose the desired phase, as previously described in example 1 for setting the immediate output voltage.

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