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NI PXIe-6672 Calibration Procedure

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Calibration Procedure

The steps used in the calibration procedure are as follows:

1.

Initial setup.

2.

Verification.

3.

Adjustment.

4.

Reverification.

Initial Setup

Complete the following steps to set up the NI PXIe-6672 for calibration.

1.

Make sure all components involved in the calibration procedure are 
powered off.

2.

Install the NI PXIe-6672 board into the system timing slot of your 
chassis.

3.

Power on the PXI chassis first, and then the external equipment.

4.

Make sure that all the appropriate driver and application software is 
installed on the host computer.

5.

Configure the hardware with Measurement & Automation Explorer 
(MAX). Refer to the 

NI PXIe-6672 Installation Guide

 for details about 

configuring the PXI equipment.

Verification

The following steps outline the procedure for measuring the 10 MHz 
oscillator frequency on the NI PXIe-6672 and determining whether the 
device requires adjustment to meet the published specifications.

Connecting the Clock Source

1.

Connect the accurate 10 MHz source to the ClkIn connector on the 
NI PXIe-6672.

2.

Program the NI PXIe-6672 to route the ClkIn signal to PXI_Clk10In 
without using its 10 MHz PLL by completing steps a–d.

Note

Use the data in the C function call reference as inputs to your LabVIEW VI where 

applicable.

Summary of Contents for Network Adapter NI PXIe-6672

Page 1: ...entions The following conventions apply to this document The symbol leads you through nested menu items and dialog box options to a final action The sequence File Page Setup Options directs you to pul...

Page 2: ...monospace italic Italic text in this font denotes text that is a placeholder for a word or value that you must supply Software This calibration procedure requires NI Sync and NI VISA NI Sync and NI V...

Page 3: ...timize connections and test conditions during the calibration procedure Install the NI PXIe 6672 in the system timing slot of the PXI Express chassis The calibration procedure requires features of PXI...

Page 4: ...cation software is installed on the host computer 5 Configure the hardware with Measurement Automation Explorer MAX Refer to the NI PXIe 6672 Installation Guide for details about configuring the PXI e...

Page 5: ...tion Call Call niSync_init with the following parameters resourceName Dev1 idQuery NULL resetDevice VI_TRUE vi SessionHandle LabVIEW Block Diagram NI SYNC C Function Call Call niSync_SetAttributeViBoo...

Page 6: ...ync Initialize VI to set up a handle for the device b Set a writable NI Sync property node to pass TRUE to the ClkOut Gain Enable attribute LabVIEW Block Diagram NI SYNC C Function Call Call niSync_cl...

Page 7: ...et up a handle for the device LabVIEW Block Diagram NI SYNC C Function Call Call niSync_ConnectClkTerminals with the following parameters vi SessionHandle sourceTerminal NISYNC_VAL_OSCILLATOR destinat...

Page 8: ...ed in Step 3 of Measuring the Frequency with the specified accuracy Table 1 shows the frequency range that is acceptable according to the published specifications for the NI PXIe 6672 LabVIEW Block Di...

Page 9: ...ives a frequency as close as possible to 10 MHz 1 Complete steps a c to set the oscillator control voltage The range of acceptable voltage values is 0 0 V to 4 095 V with frequency increasing as volta...

Page 10: ...3 of the Measuring the Frequency section Complete steps a c to measure PFI 0 a Call niSync Initialize VI to set up a handle for the device LabVIEW Block Diagram NI SYNC C Function Call Call niSync_Set...

Page 11: ...able Frequency Ranges 5 Commit the calibration values to the Calibration EEPROM using the following procedure a Call niSync Initialize External Calibration VI to initialize the process Note NI is the...

Page 12: ...Call niSync_InitExtCal with the following parameters resourceName MAX ID password NI calibrationInstrumentHandle SessionHandle LabVIEW Block Diagram NI SYNC C Function Call Call niSync_CalAdjustOscil...

Page 13: ...vering National Instruments products refer to the appropriate location Help Patents in your software the patents txt file on your CD or ni com patents 2007 National Instruments Corporation All rights...

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