CntGetPulseWidth

Function

Gets one-shot pulse width.

Format

Ret = CntGetPulseWidth ( Id , ChNo , PlsWidth )

Parameters

Id [ C: short ] [ Python: ctypes.c_short ]
Specifies the device ID retrieved from CntInit.

ChNo [ C: short ] [ Python: ctypes.c_short ]
Specifies the channel number which you want to get for.
For CNT24-4(PCI)H, CNT24-4D(PCI)H, the width of one-shot pulse is the same for all channels.

PlsWidth [ C: short * ] [ Python: ctypes.POINTER(ctypes.c_short) ]
Specifies the address of buffer which get the coefficient for one-shot pulse width.

Coefficient	Pulse Width
0h	0
1h	Approx. 409.6us
2h	Approx. 819.2us
3h	Approx. 1.23ms
4h	Approx. 4.92ms
5h	Approx. 10.24ms
6h	Approx. 20.07ms
7h	Approx. 29.9ms
8h	Approx. 40.14ms
9h	Approx. 49.97ms
Ah	Approx. 60.2ms
Bh	Approx. 70.04ms
Ch	Approx. 80.28ms
Dh	Approx. 90.11ms
Eh	Approx. 100.35ms
Fh	Approx. 104.45ms

Return Value

Ret [ C: long ] [ Python: ctypes.c_long ]

Definition	Value	Description
CNT_ERR_SUCCESS	0	Normal Complete
CNT_ERR_DLL_INVALID_ID	10001	Invalid ID is specified.
CNT_ERR_DLL_CALL_DRIVER	10002	Driver cannot be called (failed in ioctl).
CNT_ERR_SYS_CH_NO	20201	Channel number is outside the range.

The other errors: (See also: Details of Error Code)

Initial Value

Coefficient=0

Remarks

Gets the one-shot pulse width when count-match occurs.

Example

C	Ret = CntGetPulseWidth(Id, ChNo, &PlsWidth);
Python	Ret = ccnt.CntGetPulseWidth(Id, ChNo, ctypes.byref(PlsWidth))