LibTiePie  0.9.13
Library for interfacing TiePie engineering instruments
Frequency mode

Description

Functions to control the generator frequency mode.

When signal type arbitrary is selected, the frequency mode of the Arbitrary waveform generator can be set. The following frequency modes are supported:

With signal types sine, triangle, square and DC, the frequency mode is fixed to signal frequency. With signal type noise the frequency mode is fixed to sample frequency.

The frequency mode can be affected by changing the signal type.

By default the frequency mode is set to signal frequency (FM_SIGNALFREQUENCY)

Functions

uint32_t GenGetFrequencyModes (LibTiePieHandle_t hDevice)
 Get the supported generator frequency modes of a specified generator. More...
 
uint32_t GenGetFrequencyMode (LibTiePieHandle_t hDevice)
 Get the current generator frequency mode of a specified generator. More...
 
uint32_t GenSetFrequencyMode (LibTiePieHandle_t hDevice, uint32_t dwFrequencyMode)
 Set the generator frequency mode of a specified generator. More...
 

Function Documentation

uint32_t GenGetFrequencyModes ( LibTiePieHandle_t  hDevice)

Get the supported generator frequency modes of a specified generator.

Parameters
[in]hDeviceA device handle identifying the generator.
Returns
The supported generator frequency modes, a set of OR-ed FM_* values, or FMM_NONE.
Status values
NOT_SUPPORTED The generator does not support frequency mode.
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
GenGetFrequencyMode
GenSetFrequencyMode
Since
0.4.1
uint32_t GenGetFrequencyMode ( LibTiePieHandle_t  hDevice)

Get the current generator frequency mode of a specified generator.

Parameters
[in]hDeviceA device handle identifying the generator.
Returns
The currently set generator frequency mode, a FM_* value, FM_UNKNOWN when unsuccessful.
Status values
NOT_SUPPORTED The generator does not support frequency mode.
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
GenGetFrequencyModes
GenSetFrequencyMode
Since
0.4.1
uint32_t GenSetFrequencyMode ( LibTiePieHandle_t  hDevice,
uint32_t  dwFrequencyMode 
)

Set the generator frequency mode of a specified generator.

Parameters
[in]hDeviceA device handle identifying the generator.
[in]dwFrequencyModeThe requested generator frequency mode, a FM_* value.
Returns
The actually set generator frequency mode, a FM_* value, FM_UNKNOWN when unsuccessful.
Status values
INVALID_VALUE The requested frequency mode is invalid.
NOT_SUPPORTED The generator does not support generator mode.
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 frequency mode is only available when signal type Arbitrary is active.
When signal type Sine, Triangle or Square is active, frequency mode is fixed at signal frequency.
When signal type Noise is active, frequency mode is fixed at sample frequency.
Changing the frequency mode can affect the generator mode.
See also
GenGetFrequencyModes
GenGetFrequencyMode
Since
0.4.1