ZmSetFrequency


Function

Set the measurement frequency.

Format

Ret = ZmSetFrequency ( Id , ChannelNo , Frequency )

Parameters

Id [ C, C++: short ] [ Python: ctypes.c_short ]
Specify the device ID retrieved from ZmInit.

ChannelNo [ C, C++ : unsigned short ] [ Python: ctypes.c_ushort ]
Specify the channel number.

Frequency [ C, C++ : unsigned short ] [ Python: ctypes.c_ushort ]
Specify the measurement frequency.

Definition

Value
[Dec]

Description

ZM_FREQUENCY_120_HZ

0

Frequency 120Hz

ZM_FREQUENCY_1_KILO_HZ

1

Frequency 1kHz

Return Value

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

Definition

Value
[Dec]

Description

ZM_ERR_SUCCESS

0

Normality completion

ZM_ERR_SYS_CHANNEL_NO

20100

Channel No is out of the settable range.

ZM_ERR_SYS_FREQUENCY

20101

Frequency is out of the settable range.

The others (See also: Details of Error Code)

Initial Value

1: Frequency 1kHz

Remarks

Set the measurement frequency.
The measurement frequency can be set for each channel.

Example

Set the measurement frequency to "0 : Frequency 120Hz" for ChannelNo = 1.

C, C++

long Ret;
Ret = ZmSetFrequency ( Id , 1 , 0 );
 

Python

Ret = ctypes.c_long()
Ret.value = czm.ZmSetFrequency ( Id , 1 , 0 )
 

See Also

ZmGetFrequency