Specifications

72 Using the DMM and ARB Chapter 4
memory since the number of segments determines the frequency.
Testplan ‘arbburst.tpa’ illustrates how to generate a burst modulated
waveform, with waveform frequency set to 30 kHz, burst frequency set to 1
kHz, and burst pulse width set to 0.0001 seconds. A review of the testplan is
below.
Figure 4-4. Typical Burst Waveform
Waveform Frequency
(‘F_burst’ parameter)
freq*
width*
* width = Pulse Width in seconds (‘Tpulse_width’ parameter)
freq = Burst Frequency in Hz (‘frequency’ parameter)
Test Group/Test/Action Name Description
testgroup Arb burst waveform Outputs a burst waveform.
Switching Connect Arb channel 1 output to ABus1 and UUT Common.
test setup Arb Setup arb output circuitry.
arbConfOutControls Configures Arb’s output circuitry.
arbSet Sends setup data to Arb.
test download burst Setup arb to download a burst waveform.
Arb_Dl_Ext_Waveform Setup a burst waveform with waveform frequency set to 30 kHz (‘F_burst’
parameter), burst frequency of 1 kHz (‘frequency’ parameter), and a burst
pulse width of 100
µS (‘Tpulse_width’ parameter).
test output waveform Selects and outputs a burst waveform by name.
arbInitiate Initialize the Arb to output the waveform. Start outputting the waveform. The
Arb at this time outputs the last downloaded waveform.
Arb_Select_Wave_By_Name Selects and outputs the waveform using the name entered in the
‘waveform_name’ parameter (i.e., “wave1”).
DialogOkay This optional action is used here to view the current waveform (i.e., forward
and reverse sweep).
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