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NI FGEN Standard Function Attributes
- NIFGEN_ATTRIBUTE_FUNC_WAVEFORM
- NIFGEN_ATTRIBUTE_FUNC_AMPLITUDE
- NIFGEN_ATTRIBUTE_FUNC_DC_OFFSET
- NIFGEN_ATTRIBUTE_FUNC_START_PHASE
- NIFGEN_ATTRIBUTE_FUNC_DUTY_CYCLE_HIGH
- NIFGEN_ATTRIBUTE_SYNC_DUTY_CYCLE_HIGH
- NIFGEN_ATTRIBUTE_SYNC_OUT_OUTPUT_TERMINAL
- NIFGEN_ATTRIBUTE_FUNC_FREQUENCY
- NIFGEN_ATTRIBUTE_FUNC_MAX_BUFFER_SIZE
- NIFGEN_ATTRIBUTE_FUNC_BUFFER_SIZE
- NIFGEN_ATTRIBUTE_FREQ_LIST_HANDLE
- NIFGEN_ATTRIBUTE_MAX_NUM_FREQ_LISTS
- NIFGEN_ATTRIBUTE_MAX_FREQ_LIST_LENGTH
- NIFGEN_ATTRIBUTE_MIN_FREQ_LIST_LENGTH
- NIFGEN_ATTRIBUTE_FREQ_LIST_DURATION_QUANTUM
- NIFGEN_ATTRIBUTE_MAX_FREQ_LIST_DURATION
- NIFGEN_ATTRIBUTE_MIN_FREQ_LIST_DURATION
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1250101 | ViInt32 | R/W | Channel | None | niFgen_ConfigureStandardWaveform |
- [niFgen_DefineUserStandardWaveform]|
Specifies which standard waveform the signal generator produces.
Use this attribute only when the NIFGEN_ATTRIBUTE_OUTPUT_MODE attribute is set to NIFGEN_VAL_OUTPUT_FUNC.
Defined Values
| NIFGEN_VAL_WFM_SINE | Sinusoid waveform |
|---|---|
| NIFGEN_VAL_WFM_SQUARE | Square waveform |
| NIFGEN_VAL_WFM_TRIANGLE | Triangle waveform |
| NIFGEN_VAL_WFM_RAMP_UP | Positive ramp waveform |
| NIFGEN_VAL_WFM_RAMP_DOWN | Negative ramp waveform |
| NIFGEN_VAL_WFM_DC | Constant voltage |
| NIFGEN_VAL_WFM_NOISE | White noise |
| NIFGEN_VAL_WFM_USER | User-defined waveform as defined with the niFgen_DefineUserStandardWaveform function |
Default Value: NIFGEN_VAL_WFM_SINE
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1250102 | ViReal64 | R/W | Channel | None | niFgen_ConfigureStandardWaveform |
Controls the amplitude of the standard waveform that the signal generator produces. This value is the amplitude at the output terminal.
For example, to produce a waveform ranging from –5.00 V to +5.00 V, set this attribute to 10.00 V.
Note: This parameter does not affect signal generator behavior when you set the waveform parameter of the niFgen_ConfigureStandardWaveform function to NIFGEN_VAL_WFM_DC.
Units: Vpk-pk
Default Value: None
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1250103 | ViReal64 | R/W | Channel | None | niFgen_ConfigureStandardWaveform |
Controls the DC offset of the standard waveform that the signal generator produces. This value is the offset at the output terminal. The value is the offset from ground to the center of the waveform that you specify with the waveform parameter of the niFgen_ConfigureStandardWaveform function.
For example, to configure a waveform with an amplitude of 10.00 V to range from 0.00 V to +10.00 V, set this attribute to 5.00 V.
Units: volts
Default Value: None
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1250105 | ViReal64 | R/W | Channel | None | niFgen_ConfigureStandardWaveform |
Controls horizontal offset of the standard waveform the signal generator produces. Specify this attribute in degrees of one waveform cycle.
A start phase of 180 degrees means output generation begins halfway through the waveform. A start phase of 360 degrees offsets the output by an entire waveform cycle, which is identical to a start phase of 0 degrees.
Note: This parameter does not affect signal generator behavior when you set the waveform parameter of the niFgen_ConfigureStandardWaveform function to NIFGEN_VAL_WFM_DC.
Units: Degrees of one cycle
Default Value: None
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1250106 | ViReal64 | R/W | Channel | None | None |
Controls the duty cycle of the square wave the signal generator produces. Specify this attribute as a percentage of the time the square wave is high in a cycle.
Note: This parameter only affects signal generator behavior when you set the waveform parameter of the niFgen_ConfigureStandardWaveform function to NIFGEN_VAL_WFM_SQUARE.
Units: Percentage of time the waveform is high
Default Value: 50%
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1150105 | ViReal64 | R/W | N/A | None | None |
Controls the duty cycle of the square wave the signal generator produces on the SYNC OUT connector. Specify this attribute as a percentage of the time the square wave is high in each cycle.
Units: Percentage of the time the waveform is high
Default Value: 50%
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1150330 | ViString | R/W | N/A | None | None |
Specifies the terminal to export the SYNC OUT signal. For a list of the terminals available on your device, refer to the Routes topic for your device or the the Device Routes tab in MAX. This attribute is not supported for all devices.
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1250104 | ViReal64 | R/W | Channel | None | niFgen_ConfigureStandardWaveform |
Controls the frequency of the standard waveform that the signal generator produces.
Notes This parameter does not affect signal generator behavior when you set the waveform parameter of the niFgen_ConfigureStandardWaveform function to NIFGEN_VAL_WFM_DC.
For NIFGEN_VAL_WFM_SINE, the range is between 0 MHz and 16 MHz, but the range is between 0 MHz and 1 MHz for all other waveforms. Units: hertz (Hz)
Default Value: None
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1150239 | ViInt32 | R/W | N/A | None | None |
Specifies the maximum number of samples that can be used in the standard function waveform buffer. Increasing this value may increase the quality of the waveform. This attribute is valid only on devices that implement Standard Function output mode in software, and it is read-only for all other devices.
Note: Refer to the Standard Function Mode topic in the NI Signal Generators Help for more information about the implementation of Standard Function output mode on your device.
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1150238 | ViInt32 | R/W | N/A | None | None |
Contains the number of samples used in the standard function waveform buffer. This attribute is valid only on devices that implement Standard Function output mode in software, and it is read-only for all other devices.
Note: Refer to the Standard Function Mode topic for more information about the implementation of Standard Function output mode on your device.
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1150208 | ViInt32 | R/W | N/A | None | None |
Sets which frequency list the signal generator produces. Create a frequency list using the niFgen_CreateFreqList function. The niFgen_CreateFreqList function returns a handle that you can use to identify the list.
Note: You cannot change this attribute while the device is generating a waveform. If you want to change the device configuration, call the niFgen_AbortGeneration function or wait for the generation to complete.
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1150209 | ViInt32 | RO | N/A | None | None |
Returns the maximum number of frequency lists the signal generator allows.
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1150211 | ViInt32 | RO | N/A | None | None |
Returns the maximum number of steps that can be in a frequency list.
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1150210 | ViInt32 | RO | N/A | None | None |
Returns the minimum number of frequency lists that the signal generator allows.
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1150214 | ViReal64 | R/W | N/A | None | None |
Returns the quantum of which all durations must be a multiple in a frequency list.
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1150213 | ViReal64 | RO | N/A | None | None |
Specifies the maximum duration of any one step in the frequency list.
Note: You cannot change this attribute while the device is generating a waveform. If you want to change the device configuration, call the niFgen_AbortGeneration function or wait for the generation to complete.
| Numeric Value | Data Type | Access | Applies to | Coercion | High-Level Functions |
|---|---|---|---|---|---|
| 1150212 | ViReal64 | RO | N/A | None | None |
Returns the minimum duration in seconds of any one step in a frequency list.
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