Specifications

70 Using the DMM and ARB Chapter 4

Outputting a Standard Waveform Immediately

The “Arb_Output_Std_Waveform” action can also be used to generate and

output standard waveforms. This action enables the Arb to output a sine,

pulse, or triangle wave. Unlike the “Arb_Dl_Waveform” action, this action

does not require “arbIntiate” to enable it to output a waveform, however, it

also has the high throughput capability of the “Arb_Dl_Waveform” action.

“Arb_Output_Std_Waveform” can be used in any part of the testplan.

Testplan ‘arboutputstd.tpa’ illustrates how to output a 1 kHz sine

wave, 2 kHz square wave, and a 4 kHz triangle wave. A review of the

testplan is below.

Downloading a Standard Phase Shifted or Burst Modulated

Waveform

Use the “Arb_Dl_Ext_Waveform” action for phase shifted and burst

Arb_Select_Wave_By_Name Selects and outputs the waveform using the name entered in the

‘waveform_name’ parameter (i.e., “square”). Since this is the name of the

‘waveform_name’ parameter of the “Arb_Dl_Std_Waveform” action in “test

download sine wave”, a square wave is output by the Arb.

DialogOkay This optional action is used here to view the current waveform (i.e., square

wave).

Arb_Select_Wave_By_Name Selects and outputs the waveform using the name entered in the

‘waveform_name’ parameter (i.e., “triangle”). Since this is the name of the

‘waveform_name’ parameter of the “Arb_Dl_Std_Waveform” action in “test

download sine wave”, a triangle wave is output by the Arb.

DialogOkay This optional action is used here to view the current waveform (i.e., triangle

wave).

Test Group/Test/Action Name Description

testgroup Arb output std waveforms Outputs standard waveforms.

Switching Connect Arb channel 1 output to ABus1 and UUT Common.

test output sine Output sine wave

Arb_Output_Std_Waveform Immediately outputs a sine wave; ‘function’ parameter is set to “0”.

DialogOkay This optional action is used here to view the current waveform (i.e., sine

wave).

test output square Output square wave

Arb_Output_Std_Waveform Immediately outputs a square wave; ‘function’ parameter is set to “1” (pule)

and ‘duty_cycle’ parameter is set to “0.5” for the “pulse” function to output

the square wave.

DialogOkay This optional action is used here to view the current waveform (i.e., square

wave).

test output triangle Output triangle wave

Arb_Output_Std_Waveform Immediately outputs a triangle wave; ‘function’ parameter is set to “2”.

DialogOkay This optional action is used here to view the current waveform (i.e., triangle

wave).

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