Specifications

68 Using the DMM and ARB Chapter 4
Generating Standard
Waveforms
The following shows how to download standard waveforms for output using
the standard actions. For high throughput capability, use the “Arb_Dl_xx”
actions.
Downloading a Standard Waveform
Use the “Arb_Dl_Std_Waveform” action to download the waveform and the
“Arb_Select_Wave_By_Name” action to select the waveform. In this case,
the same waveform name is referenced by both actions to select the
waveform for output.
Using this method, a waveform can be selected on-the-fly to allow fast
waveform access. This is because the waveform has previously been
generated and stored in memory. All that is needed is to select the waveform
to output it.
An example to download and then select a waveform is as follows. In the
example, a waveform is generated and stored using a particular name (i.e.,
“Arbwave1”). Once this waveform is generated, it can then be selected in
any part of the testplan.
Generate the waveform using Arb_Dl_Std_Waveform with the
waveform name = “Arbwave1” (parameter: ‘waveform_name’ =
Arbwave1)
to select the waveform, set:
waveform name of an Arb_Select_Wave_By_Name action =
“Arbwave1” (parameter: ‘waveform_name’ = Arbwave1) and then
execute that action.
Note The waveform names are NOT case sensitive.
Using the above actions allow you to download and store several different
waveforms into the Arb that can be selected in different parts of the testplan.
One way to do this is to download several different waveforms with different
names at the beginning of the testplan and then select the different
waveforms throughout the testplan.
An example to use different downloaded waveforms in different parts of a
testplan is as follows:
Test1: Arb_Dl_Std_Waveform: ‘waveform_name’ = sine
Arb_Dl_Std_Waveform: ‘waveform_name’ = square
Arb_Dl_Std_Waveform: ‘waveform_name’ = triangle
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•
Test2: Arb_Select_Wave_By_Name: ‘waveform_name’ = triangle
•
•
Test3: Arb_Select_Wave_By_Name: ‘waveform_name’ = sine
•
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