Attributes for Controlling IviScope Simulation
Two sets of attributes exist for use with the IviScope Simulation Driver. The following table describes attributes that control behavior of the driver. Another table lists attributes that simulate the status of specific driver functions.
An IviScope Simulator Setup Dialog Box exists to help you configure the measurement simulation for the IviScope Simulator driver.
Attributes for Controlling IviScope Simulation
| Name | Data Type | Access | Applies To | Description |
|---|---|---|---|---|
| INTERACTIVE_SIMULATION | ViBoolean | W | N/A | Specifies whether to set the driver to interactive mode. In interactive mode, the simulation driver provides you with pop-up user interface panels in which to enter information. Non-interactive mode is useful when you do not want the interactive panels to interrupt your test program. |
| SELF_TEST_CODE | ViInt32 | W | N/A | Specifies the self-test code. When the IviScope_self_test function is called, the self-test code parameter (second parameter) returns this value. |
| SELF_TEST_MSG | ViString | W | N/A | Specifies the self-test message. When the IviScope_self_test function is called, the self-test message parameter (third parameter) returns this string. |
| ERROR_QUERY_CODE | ViInt32 | W | N/A | Specifies the error-query code. When the IviScope_error_query function is called, the error-query code parameter (second parameter) returns this value. |
| ERROR_QUERY_MSG | ViString | W | N/A | Specifies the error-query message. When the IviScope_error_query function is called, the error-query message parameter (third parameter) returns this string. |
| DRIVER_REV_QUERY | ViString | W | N/A | Specifies the instrument driver revision message. When the IviScope_revision_query function is called, the instrument driver revision message parameter (second parameter) returns this string. |
| INSTR_REV_QUERY | ViString | W | N/A | Specifies the firmware revision message. When the IviScope_revision_query function is called, the firmware revision message parameter (third parameter) returns this string. |
| WAVEFORM | ViInt32 | W | Channel | Specifies the waveform to simulate at the selected channel. Defined Values: 1—Sine2—Square 3—Triangle 4—Ramp-up 5—Ramp-down 6—DC |
| FREQUENCY | ViReal64 | W | Channel | Specifies the frequency of the waveform to simulate at the selected channel. This attribute does not affect simulation behavior when the NISSCOPE_ATTR_WAVEFORM attribute is set to 6(DC). Valid Range: 100.0 to 15.0E6 Hz |
| AMPLITUDE | ViReal64 | W | Channel | Specifies the peak-to-peak amplitude of the waveform to simulate at the selected channel. This attribute does not affect simulation behavior when the NISSCOPE_ATTR_WAVEFORM attribute is set to 6(DC). Valid Range: 50.0E–3 to 10.0 VPP |
| DC_OFFSET | ViReal64 | W | Channel | Specifies the DC offset of the waveform to simulate at the selected channel. Valid Range: –5.0 to 5.0 V |
| DUTY_CYCLE | ViReal64 | W | Channel | Specifies the duty cycle to simulate for a square waveform at the selected channel. This attribute affects simulation behavior only when the NISSCOPE_ATTR_WAVEFORM attribute is set to 2(Square). Valid Range: 20.0 to 80.0 percent |
| PHASE_SHIFT | ViReal64 | W | Channel | Specifies the start phase shift to simulate for a waveform at the selected channel. This attribute does not affect simulation behavior when the NISSCOPE_ATTR_WAVEFORM attribute is set to 6(DC). Valid Range: 0.0 to 360.0 degrees |
| SNR | ViReal64 | W | Channel | Specifies the signal-to-noise ratio to simulate at the selected channel. The signal-to-noise ratio determines the amount of noise to simulate during waveform acquisition. Valid Range: 0.001 to +inf |
| SIMULATE_STATUS_CODE | ViBoolean | W | N/A | Specifies whether to simulate return codes from the IviScope driver functions. Refer to the IviScope Attributes for Status Simulation table. |