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© 2002–2004 National Instruments Corp. All rights reserved.

370463B-01

Apr04

*370463B-01*

Saving Calibration Values

Figure 5.

Saving Calibration Values

AO_Calibrate(deviceNumber,2,1)

Set_DAQ_Device_Info(deviceNumber,ND_CALIBRATION_ENABLE,ND_NO)

Copy_Cal(deviceNumber)

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Содержание NI 6703

Страница 1: ...6704 products have two calibration options an internal or self calibration and an external calibration Internal Calibration The NI 6703 6704 is continuously applying corrections to the output levels b...

Страница 2: ...e NI recommends that you use the Hewlett Packard 3458A DMM for calibration If you do not have a Hewlett Packard 3458A DMM use the accuracy specifications to select a substitute calibration standard If...

Страница 3: ...constants update the calibration date and write to the factory calibration area The factory calibration area and the calibration date should only be modified by a metrology laboratory or another faci...

Страница 4: ...ode If you do not want to use these variable definitions you can examine the function call listings in the NI DAQ documentation and the nidaqcns h file to determine what input values are required Docu...

Страница 5: ...e channel 0 is operating within specifications all the voltage channels should be operating within specifications If you want to verify the channels individually this procedure can be easily expanded...

Страница 6: ...from the NI 6703 6704 You have now verified the voltage output of the NI 6703 6704 Verifying Current Output NI 6704 Only This procedure verifies that the current output of channel 16 is within specif...

Страница 7: ...rom the NI 6704 You have now verified the current output of the NI 6704 Adjusting the NI 6703 6704 At the end of each calibration procedure new constants are stored in the user calibration area of the...

Страница 8: ...age channel 0 Decreasing the voltage value increases the magnitude of the voltage on voltage channel 0 6 Call AO_VWrite to generate 10 0 V on voltage channel 0 Set the following parameters chan 0 volt...

Страница 9: ...Call AO_VWrite to generate 0 1 mA on current channel 16 Set the following parameters chan 16 voltage 0 1 5 Call AO_VWrite with the channel set to the current offset channel Adjust the voltage paramet...

Страница 10: ...values should also be stored in the factory calibration area Calibration constants stored in the factory calibration area cannot be overwritten by the user To save the calibration constants and updat...

Страница 11: ...mn contains the upper limits and lower limits for the test point value If the NI 6703 6704 has been calibrated in the last 24 hours the test point value should be between the upper and lower limit val...

Страница 12: ...ructure Voltage Output Verification Figure 1 Voltage Output Verification Table 2 Current Output Specifications NI 6704 Only Test Point Value mA 24 Hour Ranges 1 Year Ranges Lower Limit mA Upper Limit...

Страница 13: ...6704 Only Figure 2 Current Output Verification NI 6704 Only Refer to Table 2 Current Output Specifications NI 6704 Only to determine the appropriate ranges for the voltages and currents to verify Con...

Страница 14: ...voltage channel 0 AO_VWrite deviceNumber 0 0 0 NI 6703 AO_VWrite deviceNumber 16 voltage Adjust voltage until the DMM reads 0 0 V NI 6704 AO_VWrite deviceNumber 32 voltage Adjust voltage until the DMM...

Страница 15: ...Output Adjustment NI 6704 Only AO_VWrite deviceNumber 35 voltage Adjust voltage until the DMM reads 20 0 mA Set_DAQ_Device_Info deviceNumber ND_CALIBRATION_ENABLE ND_YES Connect the multimeter to curr...

Страница 16: ...ents covering National Instruments products refer to the appropriate location Help Patents in your software the patents txt file on your CD or ni com patents 2002 2004 National Instruments Corp All ri...

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