National Instruments NI PXI-5422 - Manual

Page 2 - Conventions; File»Page Setup»Options; Read Me First: Safety and Radio-Frequency; bold; italic; Introduction

NI PXI-5422 Calibration Procedure 2 ni.com Adjusting the Analog Output ....................................................35Adjusting the Oscillator Frequency...........................................52Adjusting the Calibration ADC .................................................55Closing the Ext...

Page 3 - External Calibration; Caution

© National Instruments Corporation 3 NI PXI-5422 Calibration Procedure What Is Calibration? Calibration consists of verifying the output accuracy of a device and correcting for any output error. Verification is measuring the performance of a device and comparing the results to the specifications of ...

Page 4 - External Calibration Options; Software and Documentation Requirements; Software; Self-Calibration Procedures

NI PXI-5422 Calibration Procedure 4 ni.com The output accuracy requirements of your application determine how often you should externally calibrate the NI PXI-5422. NI recommends that you perform a complete external calibration at least once every two years. You can shorten this interval based on th...

Page 5 - File Name and Location

© National Instruments Corporation 5 NI PXI-5422 Calibration Procedure calling a 32-bit DLL. Many of the functions use constants defined in the niFgen.h file. To use these constants in C, you must include niFgen.h in your code when you write the calibration procedure. Refer to Table 1 for file locat...

Page 6 - Documentation; NI Signal Generators Getting Started Guide; Start»Programs»National Instruments»NI-FGEN»; Verifying the DC Gain and Offset; MAX; My System»Devices and Interfaces»NI-DAQmx Devices

NI PXI-5422 Calibration Procedure 6 ni.com Documentation For information about NI-FGEN and the NI PXI-5422, you may find the following documents helpful: • NI Signal Generators Getting Started Guide • NI Signal Generators Help • NI PXI-5422 Specifications • NI-FGEN Instrument Driver Quick Reference ...

Page 7 - FGEN Soft Front Panel

© National Instruments Corporation 7 NI PXI-5422 Calibration Procedure 3. Select the device that you want to calibrate. 4. Initiate self-calibration in one of the following ways: • Click Self-Calibrate in the upper right corner. • Right-click the device name under Devices and Interfaces, and select ...

Page 8 - calibration test limits; Complete Calibration

NI PXI-5422 Calibration Procedure 8 ni.com External Calibration Options External calibration involves both verification and adjustment. Verification is the process of testing the device to ensure that the output accuracy is within certain specifications. You can use verification to ensure that the a...

Page 10 - Optional Calibration; section for more information.

NI PXI-5422 Calibration Procedure 10 ni.com Optional Calibration You can choose to skip the adjustment steps of the calibration procedure if the output error is within the calibration test limits or the published specifications during the first verification. If all of the output errors determined du...

Page 12 - External Calibration Requirements; Test Equipment

NI PXI-5422 Calibration Procedure 12 ni.com External Calibration Requirements This section describes the test equipment and test conditions required for calibration. Test Equipment External calibration requires different equipment for each applicable specification. Refer to Table 2 for a list of equ...

Page 13 - External Calibration Procedures; External; Writing Your Calibration Procedure; Functions»; Calibration Procedures in LabWindows/CVI

© National Instruments Corporation 13 NI PXI-5422 Calibration Procedure External Calibration Procedures The complete external calibration procedure consists of self-calibrating, verifying the performance of the NI PXI-5422, adjusting the calibration constants, and verifying again after the adjustmen...

Page 14 - Verifying NI PXI-5422 Specifications; Note

NI PXI-5422 Calibration Procedure 14 ni.com Verifying NI PXI-5422 Specifications Note Always self-calibrate the NI PXI-5422 before beginning a verification procedure. This section provides instructions for verifying the NI PXI-5422 specifications. This section also includes instructions for updating...

Page 16 - Verifying the Oscillator Frequency Accuracy

NI PXI-5422 Calibration Procedure 16 ni.com Verifying the Oscillator Frequency Accuracy This test verifies the frequency accuracy of the oscillator on the NI PXI-5422. The verification involves generating a 10 MHz sine wave with the NI PXI-5422 and measuring the sine wave frequency with one of the i...

Page 18 - Verifying the DC Gain and Offset Accuracy; Verifying the Main Analog Path Gain

NI PXI-5422 Calibration Procedure 18 ni.com A frequency error of 45 Hz for a 10 MHz signal corresponds to an error of 4.5 ppm. This limit accounts for the initial accuracy and the frequency deviation caused by temperature and aging. Refer to Table 3 for frequency ranges. 11. Call niFgen_AbortGenerat...

Page 21 - to set the offset (niFgen; Arbitrary Waveform Output»Arbitrary Waveform; : The session handle returned from; channelName; Table 4, changing the

© National Instruments Corporation 21 NI PXI-5422 Calibration Procedure 12. Call niFgen_SetAttributeViReal64 to set the offset (niFgen property node: Arbitrary Waveform Output»Arbitrary Waveform Offset ) using the following parameters: • vi : The session handle returned from niFgen_init • channelNam...

Page 22 - Table

NI PXI-5422 Calibration Procedure 22 ni.com Table 4. V alue s for V erifying the G ain of the M ain An alog Pa th Iteration Gain Ideal Po si ti v e F u ll-S cale (V o lts) Idea l Nega ti v e F u ll-Sc ale (V o lts) Mea sur ed Po si ti v e F u ll-S cale (V o lts) Me as ur ed Negat ive F u ll-Sc ale (...

Page 25 - Verifying the Main Analog Path Offset

© National Instruments Corporation 25 NI PXI-5422 Calibration Procedure 23. Subtract the Ideal Negative Full-Scale value from the Measured Negative Full-Scale value and record the result under Error Negative Full-Scale . The Error Negative Full-Scale value should be less than or equal to the limit y...

Page 26 - Table 5

NI PXI-5422 Calibration Procedure 26 ni.com Table 5 . V alu es fo r V erify ing th e Of fse t of the M ain An alog Pa th It eration Ga in Ideal Po si ti v e Of fs et (V o lts) Ideal Negat iv e Off set (V ol ts) Me as ur ed Po si ti v e Of fs et (V o lts) Measur ed Negat ive Of fset (V ol ts) Err o r...

Page 29 - Verifying the Gain of the Direct Path

© National Instruments Corporation 29 NI PXI-5422 Calibration Procedure 13. Measure the negative DC voltage out of the NI PXI-5422. Record negative DC voltage out measurement in the Measured Negative Offset column of Table 5. 14. Subtract the Ideal Negative Offset from the Measured Negative Offset a...

Page 31 - Gain

© National Instruments Corporation 31 NI PXI-5422 Calibration Procedure 4. Call niFgen_SetAttributeViReal64 to set the gain (niFgen property node: Arbitrary Waveform Output»Arbitrary Waveform Gain ) using the following parameters: • vi : The session handle returned from niFgen_init • channelName : &...

Page 33 - resourceName; action

© National Instruments Corporation 33 NI PXI-5422 Calibration Procedure 1. Call niFgen_InitExtCal (niFgen Init Ext Cal VI) to open an NI-FGEN external calibration session using the following parameters: • resourceName : The name of the device you want to calibrate. This name can be found under Devic...

Page 35 - Initializing the External Calibration Session; Adjusting the Analog Output; Initializing Analog Output Calibration

© National Instruments Corporation 35 NI PXI-5422 Calibration Procedure Initializing the External Calibration Session Call niFgen_InitExtCal (niFgen Init Ext Cal VI) to open an NI-FGEN external calibration session using the following parameters: • resourceName : The name of the device you want to ca...

Page 37 - Adjusting the Main Path Pre-Amplifier Offset

© National Instruments Corporation 37 NI PXI-5422 Calibration Procedure 8. Call niFgen_SetAttributeViReal64 to set the post-amplifier attenuation (niFgen property node: Calibration»Post-Amplifier Attenuation ) using the following parameters: • vi : The session handle returned from niFgen_InitExtCal ...

Page 38 - Analog Filter Enable

NI PXI-5422 Calibration Procedure 38 ni.com 2. Call niFgen_SetAttributeViReal64 to set the post-amplifier attenuation (niFgen property node: Calibration»Post-Amplifier Attenuation ) using the following parameters: • vi : The session handle returned from niFgen_InitExtCal • channelName : "0" ...

Page 39 - Pre-Amplifier Attenuation

© National Instruments Corporation 39 NI PXI-5422 Calibration Procedure 5. Call niFgen_SetAttributeViBoolean to set the analog filter state (niFgen property node: Output Attributes»Analog Filter Enabled ) using the following parameters: • vi : The session handle returned from niFgen_InitExtCal • cha...

Page 41 - Current Configuration; Adjusting the Main Path Pre-Amplifier Gain

© National Instruments Corporation 41 NI PXI-5422 Calibration Procedure 8. Call niFgen_CalAdjustMainPathPreAmpOffset (niFgen Cal Adjust Main Path Pre Amp Offset VI) using the following parameters: • vi : The session handle returned from niFgen_InitExtCal • channelName : "0" • configuration :...

Page 45 - Adjusting the Main Path Post-Amplifier Gain and Offset; Analog Path

© National Instruments Corporation 45 NI PXI-5422 Calibration Procedure Adjusting the Main Path Post-Amplifier Gain and Offset 1. Call niFgen_WriteBinary16AnalogStaticValue (niFgen Write Binary 16 Analog Static Value VI) to set the main DAC value using the following parameters: • vi : The session ha...

Page 46 - Post-Amplifier Attenuation

NI PXI-5422 Calibration Procedure 46 ni.com 6. Call niFgen_SetAttributeViInt32 to set the analog path value (niFgen property node: Output Attributes»Analog Path ) using the following parameters: • vi : The session handle returned from niFgen_InitExtCal • channelName : "0" • attributeID : NIF...

Page 48 - Adjusting the Direct Path Gain

NI PXI-5422 Calibration Procedure 48 ni.com 9. Call niFgen_CalAdjustMainPathPostAmpGainAndOffset (niFgen Cal Adjust Main Path Post Amp Gain And Offset VI) using the following parameters: • vi : The session handle returned from niFgen_InitExtCal • channelName : "0" • configuration : The Curre...

Page 52 - Adjusting the Oscillator Frequency

NI PXI-5422 Calibration Procedure 52 ni.com 12. Call niFgen_CalAdjustDirectPathGain (niFgen Cal Adjust Direct Path Gain VI) using the following parameters: • vi : The session handle returned from niFgen_InitExtCal • channelName : "0" • mainDACValues : An array containing two elements—the two...

Page 55 - Adjusting the Calibration ADC

© National Instruments Corporation 55 NI PXI-5422 Calibration Procedure c. Call niFgen_InitiateGeneration (niFgen Initiate Generation VI) to initiate the waveform generation using the following parameter: • vi : The session handle returned from niFgen_InitExtCal d. Measure the frequency of the gener...

Page 60 - Closing the External Adjustment Session

NI PXI-5422 Calibration Procedure 60 ni.com 33. Call niFgen_SetAttributeViBoolean to disable the analog output (niFgen property node: Basic Operation»Output Enabled ) using the following parameters: • vi : The session handle returned from niFgen_InitExtCal • channelName : "0" • attributeID :...

Page 61 - Calibration Utilities; To retrieve data using MAX, complete the following steps:; Select the; Calibration Tab; on the lower right corner.; FGEN SFP; To retrieve data using the FGEN SFP, complete the following steps:; Edit»Device Configuration; Open the Calibration dialog box (; Utility»Calibration

© National Instruments Corporation 61 NI PXI-5422 Calibration Procedure Calibration Utilities NI-FGEN supports several calibration utilities that allow you to retrieve information about adjustments performed on the NI PXI-5422, restore an external calibration, change the external calibration passwor...

Page 62 - NI Signal Generators Help

NI PXI-5422 Calibration Procedure 62 ni.com NI-FGEN NI-FGEN provides a full complement of calibration utility functions and VIs. Refer to the NI Signal Generators Help for the complete function reference. The utility functions include: • niFgen_RestoreLastExtCalConstants • niFgen_GetSelfCalSupported...

Page 63 - Where to Go for Support; you have access to everything from

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National Instruments NI PXI-5422 - Manual

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