Description

The enabled state of a channel trigger determines whether a channel is selected as trigger source.

Channel triggers of multiple channels can be enabled, in that case they will be OR'ed.

The enabled state can be affected by changing the channel enable, sample frequency and/or resolution.

By default channel 1 is enabled, all other channels are disabled.

Functions
bool8_t	ScpChTrGetEnabled (LibTiePieHandle_t hDevice, uint16_t wCh)
	Check whether channel trigger for a specified channel is enabled. More...

bool8_t	ScpChTrSetEnabled (LibTiePieHandle_t hDevice, uint16_t wCh, bool8_t bEnable)
	To select a channel as trigger source, set channel trigger enable. More...

Function Documentation

Check whether channel trigger for a specified channel is enabled.

Parameters

[in]	hDevice	A device handle identifying the oscilloscope.
[in]	wCh	The channel number identifying the channel, `0` to `ScpGetChannelCount() - 1`.

Status values

NOT_SUPPORTED	The indicated channel does not support trigger with the current settings.
INVALID_CHANNEL	The requested channel number is invalid.
INVALID_HANDLE	The handle is not a valid oscilloscope handle.
OBJECT_GONE	The object indicated by the handle is no longer available.
LIBRARY_NOT_INITIALIZED	The library is not initialized, see LibInit().
SUCCESS	The function executed successfully.

To select a channel as trigger source, set channel trigger enable.

Parameters

[in]	hDevice	A device handle identifying the oscilloscope.
[in]	wCh	The channel number identifying the channel, `0` to `ScpGetChannelCount() - 1`.
[in]	bEnable	BOOL8_TRUE or BOOL8_FALSE.

Status values

NOT_AVAILABLE	With the current settings, the requested functionality is not available.
NOT_SUPPORTED	The indicated channel does not support trigger with the current settings.
INVALID_CHANNEL	The requested channel number is invalid.
INVALID_HANDLE	The handle is not a valid oscilloscope handle.
OBJECT_GONE	The object indicated by the handle is no longer available.
LIBRARY_NOT_INITIALIZED	The library is not initialized, see LibInit().
SUCCESS	The function executed successfully.

Remarks: Enabling the channel trigger may change the input range if trigger level mode is TLM_ABSOLUTE and auto ranging is enabled.