Agilent Technologies 6811B, 6834B Step and Pulse Transients, Step Step Step Step Step Example

4 - Programming Examples

Step and Pulse Transients

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6 Example

Set the functions that you do not want to generate transients to FIXed mode. A convenient way to do this is with the *RST command. Then set the mode of the function that will generate the transient to STEP or PULSe as required. For example, to enable the voltage function to generate a single triggered output voltage change, use:

*RST

VOLTage:MODE STEP

Set the triggered level of the function that will generate the transient. For example, if the previously programmed voltage function is going to step the output voltage amplitude to

150 volts upon receipt of a trigger, use:

VOLTage:TRIGger 150

Select the trigger source that will generate the trigger. For example, to select the external Trigger In BNC connector as the trigger source, use:

TRIGger:TRANsient:SOURce EXTernal

Trigger sources are discussed in detail under "Triggering Output Changes".

Only perform this step if you have selected PULSE as the transient mode in Step 1. Specify the pulse count, the pulse period, and then either the duty cycle or the pulse width using the following commands:

PULSe:COUNt	1	specifies 1 output pulse
PULSe:PERiod 1		specifies a pulse period of 1 second
PULSe:DCYCle 50		specifies a duty cycle of 50%
PULSe:WIDTh	.5	specifies a pulse width of .5 seconds (not necessary in this
		case, since a duty cycle has already been specified)

Initiate the transient trigger system to enable it to receive a trigger. To enable the trigger system for one transient event use:

INITiate:IMMediate:SEQuence1

To enable the transient system indefinitely use:

INITiate:CONTinuous:SEQuence1 ON

Trigger the transient. This is described in detail under "Triggering Output Changes".

The following example programs a voltage dropout for 2 cycles of a 120 volt, 60 Hz output. The dropout begins at the positive peak of the output voltage waveform (90 degrees phase) and is triggered by GPIB bus trigger.

*RST	Begin at power-on state
VOLT 120	Set initial output voltage (immediate-level)
FREQ 60	Set initial output frequency
OUTP ON	Enable the output
VOLT:MODE PULS	Enable output to generate pulses when triggered
VOLT:TRIG 0	Set the voltage dropout (triggered level)
PULS:WIDT .03333	Set pulse width for 2 periods
TRIG:SOUR BUS	Respond to GPIB bus triggers
TRIG:SYNC:SOUR PHAS	Synchronize triggers to internal phase reference
TRIG:SYNC:PHAS 90	Sets internal phase reference point to 90 degrees
INIT:SEQ1	Set to Wait-for-trigger state
<device trigger>	Send the GPIB bus trigger

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