CntSetSamplingInternalClock

Function

Sets the internal clock value.

Format

Ret = CntSetSamplingInternalClock ( Id , Clock , Unit )

Parameters

Id [ VB.NET: Short ] [ C, C++: short ] [ C#: short ] [ Python: ctypes.c_short ]
Specify the device ID retrieved from CntInit.

Clock [ VB.NET: Integer ] [ C, C++: unsigned long ] [ C#: uint ] [ Python: ctypes.c_ulong ]
Specify the clock value. The result value of clock value and clock value unit can be set in the following range with clock value unit.

Device

Available Range

CNT-3204IN-USB

2us <= Clock <= 107sec (25ns unit)

CNT32-8M(PCI)

CNT32-4MT(LPCI)

CNT-3204MT-LPE

CNT-3208M-PE

50ns <= Clock <= 107sec (25ns unit)

Unit [ VB.NET: Short ] [ C, C++: short ] [ C#: short ] [ Python: ctypes.c_short ]
Clock value unit

Definition	Value	Description
CNTS_TIM_UNIT_S	1	1sec unit
CNTS_TIM_UNIT_MS	2	1ms unit
CNTS_TIM_UNIT_US	3	1us unit
CNTS_TIM_UNIT_NS	4	1ns unit

Return Value

Ret [ VB.NET: Integer ] [ C, C++: long ] [ C#: int ] [ Python: ctypes.c_long ]

Definition	Value	Description
CNT_ERR_SUCCESS	0	Normality completion
CNT_ERR_SYS_RECOVERED_FROM_STANDBY	7	Execute the function CntResetDevice to return from the standby mode.
CNT_ERR_DLL_INVALID_ID	10001	Invalid ID was specified.
CNT_ERR_DLL_CALL_DRIVER	10002	CNT driver can't be called (Failed in the device I/O control).
CNT_ERR_SYS_MEMORY	20000	It failed in memory allocation for the object preparation.
CNT_ERR_SYS_NOT_SUPPORTED	20001	This function can't be used by this device.
CNT_ERR_SYS_USING_OTHER_PROCESS	20003	Cannot use because another process is using the device.
CNT_ERR_SYS_CLOCK_VAL	21009	The clock value is out of range.
CNT_ERR_SYS_CLOCK_UNIT	21010	The unit of clock value is out of range.

The others: (See also: Details of Error Code)

Initial Value

USB device : 20us
Other device : 1us

Remarks

In order to make the application operation regular, must set the internal clock value when the internal clock is used. This function should be executed in the setting stage before sampling starts.

Example

Sets the internal clock to 500msec.

VB.NET	Dim Ret As Integer Ret = CntSetSamplingInternalClock ( Id , 500 , 2 )
C, C++	long Ret; Ret = CntSetSamplingInternalClock ( Id , 500 , 2 );
C#	int Ret; Ret = cnt.SetSamplingInternalClock ( Id , 500 , 2 );
Python	Ret = ctypes.c_long() Ret.value = ccnt.CntSetSamplingInternalClock ( Id , 500 , 2 )