IviScope Configure Glitch Trigger Source
IviScopeGlitchTrigger Capability Group [GT]
This VI configures the glitch trigger. A glitch trigger occurs when the trigger signal has a pulse with a width that is less than the glitch width. You specify the glitch width in the Glitch Width parameter. You specify the polarity of the pulse with the Glitch Polarity parameter. The trigger does not actually occur until the edge of a pulse that corresponds to the Glitch Width and Glitch Polarity crosses the threshold you specify in the Trigger Level parameter.
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Note This VI affects instrument behavior only if the trigger type is IVISCOPE_VAL_GLITCH_TRIGGER. Call the IviScope Configure Trigger and IviScope Configure Trigger Coupling VIs to set the trigger type and trigger coupling before calling this VI. |
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instrument handle The instrument handle that you obtain from the IviScope Initialize or the IviScope Initialize With Options VI. |
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trigger source Pass the source you want the oscilloscope to monitor for a trigger. The driver sets the IviScope Trigger Source property to this value.
After you call one of the IviScope Read Waveform, IviScope Read Min Max Waveform [MmW], IviScope Read Waveform Measurement [WM], or IviScope Initiate Acquisition VIs, the oscilloscope waits for the trigger from the source you specify in this parameter. This control accepts one of the valid channel names or additional trigger sources listed below. Virtual channel names are aliases for instrument specific channel strings. The instrument specific channel strings can differ from one instrument to another. Virtual channel names allow you to use and swap instruments without having to change the channel names in your source code. You assign a virtual channel name to an instrument specific channel through MAX. This control accepts virtual channel names you have assigned to the specific instrument you are using. It also accepts the instrument specific channel names. Additional Trigger SourcesIVISCOPE_VAL_EXTERNAL—External IVISCOPE_VAL_TTL0—PXI TRIG0 or VXI TTL0 IVISCOPE_VAL_TTL1—PXI TRIG1 or VXI TTL1 IVISCOPE_VAL_TTL2—PXI TRIG2 or VXI TTL2 IVISCOPE_VAL_TTL3—PXI TRIG3 or VXI TTL3 IVISCOPE_VAL_TTL4—PXI TRIG4 or VXI TTL4 IVISCOPE_VAL_TTL5—PXI TRIG5 or VXI TTL5 IVISCOPE_VAL_TTL6—PXI TRIG6 or VXI TTL6 IVISCOPE_VAL_TTL7—PXI TRIG7 or VXI TTL7 IVISCOPE_VAL_ECL0—VXI ECL0 IVISCOPE_VAL_ECL1—VXI ECL1 IVISCOPE_VAL_PXI_STAR—PXI Star IVISCOPE_VAL_RTSI_0—RTSI line 0 IVISCOPE_VAL_RTSI_1—RTSI line 1 IVISCOPE_VAL_RTSI_2—RTSI line 2 IVISCOPE_VAL_RTSI_3—RTSI line 3 IVISCOPE_VAL_RTSI_4—RTSI line 4 IVISCOPE_VAL_RTSI_5—RTSI line 5 IVISCOPE_VAL_RTSI_6—RTSI line 6 |
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Note IVISCOPE_VAL_EXTERNAL—The oscilloscope waits for a trigger on the external trigger input. |
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trigger level (volts) Pass the voltage threshold you want the oscilloscope to use for glitch triggering. The driver sets the IviScope Trigger Level property to this value.
The oscilloscope triggers when a glitch crosses the trigger threshold you specify with this parameter. Units: volts Default value: 0.0 |
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Note This parameter only affects instrument behavior when you select a channel or the external trigger input as the Trigger Source. You cannot configure the trigger level that the oscilloscope uses for other trigger sources. |
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glitch width (seconds) Pass the length of time you want the oscilloscope to use for the glitch width. The driver sets the IviScope Glitch Width [GT] property to this value.
The oscilloscope triggers when it detects a pulse with a width less than or greater than this value, depending on the Glitch Condition parameter. Units: seconds Default value: 0.000010 |
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glitch polarity Pass the polarity of the glitch that you want to trigger the oscilloscope. The driver sets the IviScope Glitch Polarity [GT] property to this value.
Defined Values: IVISCOPE_VAL_GLITCH_POSITIVE—The oscilloscope triggers on a positive glitch. IVISCOPE_VAL_GLITCH_NEGATIVE—The oscilloscope triggers on a negative glitch. IVISCOPE_VAL_GLITCH_EITHER—The oscilloscope triggers on either a positive or negative glitch. Default Value: IVISCOPE_VAL_GLITCH_POSITIVE |
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glitch condition Pass the glitch condition. The driver uses this value to set the IviScope Glitch Condition [GT] property.
The oscilloscope triggers when it detects a pulse with a width less than or greater than this value, depending on this parameter. Defined Values: IVISCOPE_VAL_GLITCH_LESS_THAN—The oscilloscope triggers when the pulse width is less than the Glitch Width. IVISCOPE_VAL_GLITCH_GREATER_THAN—The oscilloscope triggers when the pulse width is greater than the Glitch Width. Default Value: IVISCOPE_VAL_GLITCH_LESS_THAN |
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error in (no error) The error in cluster can accept error information wired from VIs previously called. Use this information to decide if any functionality should be bypassed in the event of errors from other VIs.
The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed. |
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instrument handle out The instrument handle that you obtain from the IviScope Initialize or the IviScope Initialize With Options VI. |
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error out The error out cluster passes error or warning information out of a VI to be used by other VIs.
The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed. |