LibTiePie  0.9.8
Library for interfacing TiePie engineering instruments
Amplitude

Description

Functions for controlling the amplitude and amplitude range of a generator.

The amplitude of a generator can be set between a minimum and a maximum value. Use GenGetAmplitudeMin() and GenGetAmplitudeMax() to get the amplitude limits.

Amplitude and Offset combined cannot exceed the minimum and maximum output value of the generator. Setting a larger amplitude will clip the amplitude to a valid value.

A generator has one or more output ranges, use GenSetAmplitudeRange() to set the required range or GenSetAmplitudeAutoRanging to enable amplitude auto ranging.

By default the amplitude is set to: 1 V and auto ranging is enabled (BOOL8_TRUE).

When signal type DC is active, amplitude is not available. Use GenHasAmplitude() to check whether amplitude is available for the currently set signal type.

Modules

 Amplitude range
 Functions for controlling the amplitude range of a generator.
 

Functions

bool8_t GenHasAmplitude (LibTiePieHandle_t hDevice)
 Check whether the current signal type of a specified generator supports controlling the signal amplitude. More...
 
double GenGetAmplitudeMin (LibTiePieHandle_t hDevice)
 Get the minimum signal amplitude for the current signal type of a specified generator. More...
 
double GenGetAmplitudeMax (LibTiePieHandle_t hDevice)
 Get the maximum signal amplitude for the current signal type of a specified generator. More...
 
double GenGetAmplitude (LibTiePieHandle_t hDevice)
 Get the currently set signal amplitude of a specified generator. More...
 
double GenSetAmplitude (LibTiePieHandle_t hDevice, double dAmplitude)
 Set the signal amplitude of a specified generator. More...
 

Function Documentation

bool8_t GenHasAmplitude ( LibTiePieHandle_t  hDevice)

Check whether the current signal type of a specified generator supports controlling the signal amplitude.

Parameters
[in]hDeviceA device handle identifying the generator.
Returns
BOOL8_TRUE if supported, BOOL8_FALSE if not.
Status values
INVALID_HANDLE The handle is not a valid generator handle.
OBJECT_GONE The object indicated by the handle is no longer available.
LIBRARY_NOT_INITIALIZEDThe library is not initialized, see LibInit().
SUCCESS The function executed successfully.
See also
GenGetAmplitudeMin
GenGetAmplitudeMax
GenGetAmplitude
GenSetAmplitude
Since
0.6
double GenGetAmplitudeMin ( LibTiePieHandle_t  hDevice)

Get the minimum signal amplitude for the current signal type of a specified generator.

When amplitude auto ranging is enabled, the minimum value of all amplitude ranges is returned. When amplitude auto ranging is disabled, the minimum value for the currently set amplitude range is returned.

Parameters
[in]hDeviceA device handle identifying the generator.
Returns
The minimum signal amplitude in Volt.
Status values
NOT_SUPPORTED The current signal type does not support signal amplitude.
INVALID_HANDLE The handle is not a valid generator handle.
OBJECT_GONE The object indicated by the handle is no longer available.
LIBRARY_NOT_INITIALIZEDThe library is not initialized, see LibInit().
SUCCESS The function executed successfully.
See also
GenGetAmplitudeMax
GenGetAmplitude
GenSetAmplitude
Since
0.4.0
double GenGetAmplitudeMax ( LibTiePieHandle_t  hDevice)

Get the maximum signal amplitude for the current signal type of a specified generator.

When amplitude auto ranging is enabled, the maximum value for the highest amplitude range is returned. When amplitude auto ranging is disabled, the maximum value for the currently set amplitude range is returned.

Parameters
[in]hDeviceA device handle identifying the generator.
Returns
The maximum signal amplitude in Volt.
Status values
NOT_SUPPORTED The current signal type does not support signal amplitude.
INVALID_HANDLE The handle is not a valid generator handle.
OBJECT_GONE The object indicated by the handle is no longer available.
LIBRARY_NOT_INITIALIZEDThe library is not initialized, see LibInit().
SUCCESS The function executed successfully.
See also
GenGetAmplitudeMin
GenGetAmplitude
GenSetAmplitude
Since
0.4.0
double GenGetAmplitude ( LibTiePieHandle_t  hDevice)

Get the currently set signal amplitude of a specified generator.

Parameters
[in]hDeviceA device handle identifying the generator.
Returns
The currently set signal amplitude in Volt.
Status values
NOT_SUPPORTED The current signal type does not support signal amplitude.
INVALID_HANDLE The handle is not a valid generator handle.
OBJECT_GONE The object indicated by the handle is no longer available.
LIBRARY_NOT_INITIALIZEDThe library is not initialized, see LibInit().
SUCCESS The function executed successfully.
See also
GenGetAmplitudeMin
GenGetAmplitudeMax
GenSetAmplitude
Since
0.4.0
double GenSetAmplitude ( LibTiePieHandle_t  hDevice,
double  dAmplitude 
)

Set the signal amplitude of a specified generator.

Parameters
[in]hDeviceA device handle identifying the generator.
[in]dAmplitudeThe requested signal amplitude.
Returns
The actually set signal amplitude.
Status values
VALUE_CLIPPED The requested amplitude is outside the valid range and clipped to the closest limit.
VALUE_MODIFIED The requested amplitude is within the valid range but not available. The closest valid value is set.
INVALID_VALUE The requested amplitude is < 0.
NOT_SUPPORTED The current signal type does not support signal amplitude.
NOT_CONTROLLABLE The generator is currently not controllable, see GenIsControllable.
INVALID_HANDLE The handle is not a valid generator handle.
OBJECT_GONE The object indicated by the handle is no longer available.
LIBRARY_NOT_INITIALIZEDThe library is not initialized, see LibInit().
SUCCESS The function executed successfully.
Remarks
Setting the amplitude may change the amplitude range when amplitude auto ranging is enabled.
Setting the amplitude may cause a new waveform pattern to be uploaded when signal type Square wave is active, shortly interrupting the output signal.
See also
GenGetAmplitudeMin
GenGetAmplitudeMax
GenGetAmplitude
Since
0.4.0