IviScope Configure TV Trigger Source
IviScopeTVTrigger Capability Group [TV]
This VI configures the oscilloscope for TV triggering. It configures the TV signal format, the event, and the signal polarity.
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Note This VI affects instrument behavior only if the trigger type is IVISCOPE_VAL_TV_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 in 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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tv signal format Pass the type of TV signal on which the oscilloscope triggers. The driver sets the IviScope TV Trigger Signal Format [TV] property to this value.
Defined Values: IVISCOPE_VAL_NTSC—NTSC video signal IVISCOPE_VAL_PAL—PAL video signal IVISCOPE_VAL_SECAM—SECAM video signal Default Value: IVISCOPE_VAL_NTSC |
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tv event Pass the TV event on which you want the oscilloscope to trigger. The driver sets the IviScope TV Trigger Event [TV] property to this value.
Defined Values: IVISCOPE_VAL_TV_EVENT_FIELD1—Trigger on field 1 IVISCOPE_VAL_TV_EVENT_FIELD2—Trigger on field 2 IVISCOPE_VAL_TV_EVENT_ANY_FIELD—Trigger on any field IVISCOPE_VAL_TV_EVENT_ANY_LINE—Trigger on any line IVISCOPE_VAL_TV_EVENT_LINE_NUMBER—Trigger on a line you specify Default Value: IVISCOPE_VAL_TV_EVENT_FIELD1 |
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Note If you specify IVISCOPE_VAL_TV_EVENT_LINE_NUMBER, you must set the line number on which the oscilloscope triggers by calling the IviScope Configure TV Trigger Line Number [TV] VI. |
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trigger polarity Pass the polarity of the TV signal. The driver sets the IviScope TV Trigger Polarity property to this value.
Defined Values: IVISCOPE_VAL_TV_POSITIVE—Trigger on a positive video sync IVISCOPE_VAL_TV_NEGATIVE—Trigger on a negative video sync Default value: IVISCOPE_VAL_TV_POSITIVE |
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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. |