National Instruments 6738, Процедура калибровки

Страница: 10 / 16

10 | ni.com | NI 6738/6739 Calibration Procedure
2. Measure the internal device temperature and perform self-calibration if necessary. Refer to
the
Checking Device Temperature Changes section for more information.
3. Call
DAQmxCreateTask
with the following parameters:
• taskName :
MyAOVoltageTask
• taskHandle :
&taskHandle
4. Call
DAQmxCreateAOVoltageChan
with the following parameters.
• taskHandle :
taskHandle
• physicalChannel :
Dev_name/ao0
• nameToAssignToChannel :
AOVoltageChannel
• minVal :
-10.0
• maxVal :
10.0
• units :
DAQmx_Val_Volts
• customScaleName :
NULL
5. Call
DAQmxStartTask
with the following parameter:
• taskHandle :
taskHandle
6. Call
DAQmxWriteAnalogF64
with the following parameters, using a Test Point from
Table 3, NI 6738/6739 Analog Output Values .
• taskHandle :
taskHandle
• numSampsPerChan :
1
• autoStart :
1
• timeout :
10.0
• dataLayout :
DAQmx_Val_GroupByChannel
• writeArray :
&data
AO 57 Connector 1, AO 57 (pin 63) Connector 1, AO GND 56/57 (pin 30)
AO 58 Connector 1, AO 58 (pin 64) Connector 1, AO GND 58/59 (pin 65)
AO 59 Connector 1, AO 59 (pin 31) Connector 1, AO GND 58/59 (pin 65)
AO 60 Connector 1, AO 60 (pin 32) Connector 1, AO GND 60/61 (pin 33)
AO 61 Connector 1, AO 61 (pin 66) Connector 1, AO GND 60/61 (pin 33)
AO 62 Connector 1, AO 62 (pin 67) Connector 1, AO GND 62/63 (pin 68)
AO 63 Connector 1, AO 63 (pin 34) Connector 1, AO GND 62/63 (pin 68)
* Connector 1/AO <32..63> are on the PXIe-6739 only.
Table 2.
Analog Output Connections (Continued)
Analog
Output
*
DMM
Positive Input Negative Input