INT32S DRV_TCMuxRead ( PTR_T DeviceHandle， PT_TCMuxRead *lpTCMuxRead );
Perform temperature measurement function with an expansion board on DeviceHandle specified device.
| Name | Direction | Type | Range | Description |
| DeviceHandle | input | pointer | default | Pointer retrieved from DRV_DeviceOpen that specifies the target device. |
| lpTCMuxRead | input / output | pointer to PT_TCMuxRead | default | Pointer to the stucture PT_TCMuxRead that stores DasChan, DasGain, ExpChan, TCType, TempScale and temp. |
| 1. SUCCESS | Successful. |
| 2. InvalidDeviceHandle | The DeviceHandle is NULL. |
| 3. InvalidChannel | DasChan is out of allowable range. |
| 4. InvalidGain | The DAS card doesn't support the DasGain. |
| 6. Other value | Please reference ErrorCodes |
Using the PCLD-770, PCLD-779 or PCLD-789 for thermocouple measurement. Thermocouple linearization is provided automatically by the driver if a temperature measurement operation is chosen in the application program. The linearization is performed and the temperature acquired by the thermocouple/mux card is available for control strategy use or display in degrees Celsius. The conversion to units other than degrees C (Fahrenheit, Kelvin, etc.) can be accomplished by use of a calculation scaling factor.