National Instruments PXIe-4310 Handbuch

CALIBRATION PROCEDURE

PXIe-4310

8-channel, 16-bit, 400 kS/s/ch, Ch-Ch Isolated Analog Input Module

This document contains the verification and adjustment procedures for the PXIe-4310 module.

Note To maintain forced air cooling in the PXI Express system, refer to the

Maintain Forced-Air Cooling Note to Users.

Contents

Software.................................................................................................................................... 1

Documentation.......................................................................................................................... 2

PXIe-4310 Verification and Adjustment.................................................................................. 3

Test Equipment................................................................................................................. 3

Connecting the TB-4310 (10V)................................................................................ 4

Test Conditions.................................................................................................................5

Initial Setup....................................................................................................................... 5

Self-Calibration ........................................................................................................ 5

Checking Device Temperature Changes .................................................................. 6

Accuracy Verification....................................................................................................... 6

Adjustment........................................................................................................................ 8

Reverification ................................................................................................................... 9

Specifications............................................................................................................................ 9

Worldwide Support and Services ............................................................................................. 9

Software

Calibrating the PXIe-4310 requires the installation of NI-DAQmx on the calibration system.

Driver support for calibrating the PXIe-4310 was first available in NI-DAQmx 17.1. For the list

of devices supported by a specific release, refer to the NI-DAQmx Readme, available on the

version-specific download page or installation media.

You can download NI-DAQmx from ni.com/downloads. NI-DAQmx supports LabVIEW,

LabWindows™/CVI™, C/C++, C#, and Visual Basic .NET. When you install NI-DAQmx, you

only need to install support for the application software that you intend to use.

2|ni.com |PXIe-4310 Calibration Procedure

Documentation

Consult the following documents for information about the PXIe-4310, NI-DAQmx, and your

application software. All documents are available on ni.com, and help files install with the

software.

PXIe-4310 and TB-4310 (10V)/TB-4310 (600V) Getting Started Guide and Terminal Block

Specifications

NI-DAQmx driver software installation and hardware setup.

PXIe-4310 User Manual

PXIe-4310 usage and reference information.

PXIe-4310 Specifications

PXIe-4310 specifications and calibration interval.

NI-DAQmx Readme

Operating system and application software support in NI-DAQmx.

NI-DAQmx Help

Information about creating applications that use the NI-DAQmx driver.

LabVIEW Help

LabVIEW programming concepts and reference information about NI-DAQmx VIs and

functions.

NI-DAQmx C Reference Help

Reference information for NI-DAQmx C functions and NI-DAQmx C properties.

NI-DAQmx .NET Help Support for Visual Studio

Reference information for NI-DAQmx .NET methods and NI-DAQmx .NET properties, key

concepts, and a C enum to .NET enum mapping table.

PXIe-4310 Calibration Procedure |© National Instruments |3

PXIe-4310 Verification and Adjustment

This section provides information for verifying and adjusting the PXIe-4310.

Test Equipment

Table 1 lists the equipment recommended for the performance verification procedures of the

PXIe-4310. If the recommended equipment is not available, select a substitute using the

requirements listed in Table 1.

Table 1. Recommended Equipment for PXIe-4310 Verification

Equipment Recommended Model Requirements

Calibrator Fluke 5700A If this instrument is unavailable, use a

high-precision voltage source with an

accuracy of at least 15 ppm for

adjustment and verification. The

source needs an output range of at

least ± 10 V and an output impedance

of 50 .

PXI Express Chassis PXIe-1062Q If this chassis is unavailable, use

another PXI Express chassis, such as

the PXIe-1082 or PXIe-1078.

Connection Accessory TB-4310 (10V) —

4|ni.com |PXIe-4310 Calibration Procedure

Connecting the TB-4310 (10V)

The TB-4310 (10V) provides connections for the PXIe-4310. Figure 1 shows the pin

assignments of the TB-4310 (10V).

Figure 1. TB-4310 (10V) Circuit Board Parts Locator Diagram

Each channel consists of two terminal connections specific to that channel as shown in Table 2.

You can verify the accuracy for any or all channels depending on the desired test coverage.

Refer to Table 2 for the analog signal names of the TB-4310 (10V).

1 TB-4310 (10V) 2 To Calibrator + 3 To Calibrator -

Table 2. TB-4310 (10V) Analog Signal Names

Signal

Names Reference Direction Description

COM <0..7> — — Analog Input Isolated Ground—These

terminals are the reference point for

differential analog input measurements.

AI <0..7>+,

AI <0..7>-

COM <0..7> Input Analog Input Channels 0 to 7—AI+ and

AI- are the positive and negative inputs of

a differential analog input.

CFOR PATENTS: NI.COM/PATENTS UL 94V–0

TB — 4310

AI0–

AI0+

COM0

AI1–

AI1+

COM1

AI2–

AI2+

COM2

AI3–

AI3+

COM3

AI4–

AI4+

COM4

AI5–

AI5+

COM5

AI6–

AI6+

COM6

AI7–

AI7+

COM7/

PFI GND

PFI0

PFI1

R39

R40

CR2

R33

R34 CR1

R21 R24R18

R20 R23R17

R12 R15R9

R11 R14R8

R6R3

R5R2

J1 J2 J3 J4 J5 J6 J7 J9

RP1

RP2

RP3

R10

RP4

R13

RP5

R16

RP6

R19

RP7

R22

RP8

C1 B1 A1

J10

FRONT

PXIe-4310 Calibration Procedure |© National Instruments |5

Test Conditions

The following setup and environmental conditions are required to ensure the PXIe-4310 meets

published specifications.

• Review and become familiar with the entire procedure before beginning the calibration

process.

• Keep connections to the PXIe-4310 as short as possible. Long cables and wires act as

antennas, picking up extra noise that can affect measurements.

• Verify that all connections to the TB-4310 (10V) are secure.

• Use shielded copper wire for all cable connections to the TB-4310 (10V). Use twisted-pair

wire to eliminate noise and thermal offsets.

• Maintain an ambient temperature of 23 °C ±5 °C. The PXIe-4310 temperature will be

greater than the ambient temperature.

• Keep relative humidity below 80%.

• For valid test limits, maintain the device temperature within ±1 °C from the last

self-calibration and ±10 °C from the last external calibration. The device temperature will

be greater than the ambient temperature. Refer to the Checking Device Temperature

Changes section for more information about verification and adjustment temperatures and

temperature drift.

• Allow a warm-up time of at least 15 minutes to ensure that the PXIe-4310 measurement

circuitry is at a stable operating temperature.

• Ensure that the PXI/PXI Express chassis fan speed is set to HIGH, that the fan filters are

clean, and that the empty slots contain filler panels. For more information, refer to the

Maintain Forced-Air Cooling Note to Users document available at ni.com/manuals.

Initial Setup

Refer to the PXIe-4310 and TB-4310 (10V)/TB-4310 (600V) Getting Started Guide and

Terminal Block Specifications for information about how to install the software and hardware

and how to configure the device in NI Measurement & Automation Explorer (MAX).

Note When a device is configured in MAX, it is assigned a device identifier. Each

function call uses this identifier to determine which DAQ device to verify. This

document uses Dev1 to refer to the device name. In the following procedures, use the

device name as it appears in MAX.

Self-Calibration

A self-calibration must be performed before performing device verification. Perform a

self-calibration after the device has warmed up for the recommended time period of 15 minutes.

You can initiate self-calibration using MAX, by completing the following steps.

1. Launch MAX.

2. Select My System»Devices and Interfaces»PXIe-4310.

6|ni.com |PXIe-4310 Calibration Procedure

3. Initiate self-calibration using one of the following methods:

•ClickSelf-Calibrate in the upper right corner of MAX.

• Right-click NI PXIe-4310 and select Self-Calibrate from the drop-down menu.

Note Once self-calibration is completed, maintain the device temperature within

±1 °C of the self-calibration temperature.

Note NI recommends self-calibrating using MAX, although you can also

self-calibrate programmatically.

Checking Device Temperature Changes

Device temperature changes (greater than ±10 °C since the previous external calibration or

greater than ±1 °C since the previous self-calibration) can cause you to incorrectly verify and

adjust your device. After self-calibrating your device as described in the Self-Calibration

section, complete the following steps to compare the current device temperature to the

temperatures measured during the last self-calibration and external calibration in MAX.

1. Launch MAX.

2. Select My System»Devices and Interfaces»PXIe-4310.

3. Click the Settings tab. Temperature information is displayed in the Self-Calibration and

External Calibration sections of the Settings tab.

Accuracy Verification

This section provides instructions for verifying the PXIe-4310 specifications.

Throughout the verification process, use Table 4 to determine if your device needs to be

adjusted.

Since PXIe-4310 modules have many different ranges, you must check measurements for each

available range. You must perform verification on all ranges of all analog input channels of

PXIe-4310 modules in differential mode.

Note The test limits used in this document assume a maximum temperature drift of

±10 °C from the last external calibration, and a maximum temperature drift of ±1 °C

from the last self-calibration. Refer to the Checking Device Temperature Changes

section for more information and instructions on reading your device temperature and

comparing it against the device temperature during the last external calibration.

Complete the following steps to verify the analog input:

Note The TB-4310 (600V) cannot be used for verification or adjustment of the

PXIe-4310.

1. Connect the output of the calibrator to the TB-4310 (10V) as shown in Figure 1.

2. Connect the TB-4310 (10V) to the PXIe-4310.

PXIe-4310 Calibration Procedure |© National Instruments |7

Table 4 shows all acceptable values for the PXIe-4310. NI recommends that you verify all

ranges.

3. Set the calibrator voltage to the test value indicated in Table 4.

4. Create and configure a DAQmx task using the settings in Table 3. Set the range

corresponding to the selected test value from Table 4.

5. Start the acquisition.

6. Average the voltage values that you acquired.

7. Compare the resulting average to the upper and lower limits listed in Table 4. If the result

is between these values, the device passes the test.

8. Clear the acquisition task.

9. For each value in Table 4 repeat steps 3 through 8.

10. Disconnect the calibrator from the device.

You have finished verifying the analog input specification on your device.

Note If verification results are within the 24-Hour Limits listed in Table 4 an

adjustment is not required, but is still recommended. If you do not want to perform

an adjustment, you can update the calibration date without making any adjustments

by initializing an external calibration and closing the external calibration.

Table 3. AI Voltage Configuration

Configuration Value

Physical Channels Dev1/ai0:7

Sample Mode Finite number of samples.

Sample Clock Rate 100000

Samples per Channel 10000

Measurement Type Vo l t a g e

Units V

Terminal Configuration Differential

Sample Timing Type Sample Clock

8|ni.com |PXIe-4310 Calibration Procedure

Adjustment

Following the adjustment procedure automatically updates the calibration date and temperature,

and adjusts the analog input calibration constants and stores them in the EEPROM of the

PXIe-4310.

Complete the following steps to perform device adjustment using a calibrator:

1. Connect the output of the calibrator to the TB-4310 (10V) as shown in Figure 1.

2. Set your calibrator to output a voltage of 7.5 V.

3. Open an external calibration session on your device using the DAQmx Initialize External

Calibration function with the following parameters:

deviceName: Dev1

password1: NI

calHandle: &calHandle

4. Call the 4310 instance of the DAQmx Adjust SC Express Calibration function with the

following parameters:

calHandle: calHandle

referenceVoltage: 7.5

Table 4. PXIe-4310 Analog Input Values

Range (V) Test Point 24-Hour Limits 2-Year Limits

Min Max Location Value (V)

Lower

Limit (V)

Upper

Limit (V)

Lower

Limit (V)

Upper

Limit (V)

-10 10 Pos FS 9.980000 9.978177 9.981823 9.977508 9.982492

-10 10 Neg FS -9.980000 -9.981823 -9.978177 -9.982492 -9.977508

-5 5Neg FS -4.990000 -4.990947 -4.989053 -4.991276 -4.988724

-5 5Pos FS 4.990000 4.989053 4.990947 4.988724 4.991276

-2 2Pos FS 1.996000 1.995567 1.996433 1.995439 1.996561

-2 2Neg FS -1.996000 -1.996433 -1.995567 -1.996561 -1.995439

-1 1Neg FS -0.998000 -0.998265 -0.997735 -0.998323 -0.997677

-1 1Pos FS 0.998000 0.997735 0.998265 0.997677 0.998323

-10 10 0.000000 0.000000 -0.000765 0.000765 -0.000765 0.000765

-5 50.000000 0.000000 -0.000408 0.000408 -0.000408 0.000408

-2 20.000000 0.000000 -0.000207 0.000207 -0.000207 0.000207

-1 10.000000 0.000000 -0.000140 0.000140 -0.000140 0.000140

1 The default password is NI, which can be changed. Refer to the NI-DAQmx Help for details.

PXIe-4310 Calibration Procedure |© National Instruments |9

5. Save the adjustment constants to the EEPROM, using the DAQmx Close External

Calibration function with the following parameters:

calHandle: calHandle

action: DAQmx_Val_Action_Commit

This function also saves the date, time, and temperature of the adjustment to the onboard

memory.

Note If an error occurs during adjustment, no constants will be written to the

EEPROM.

6. Place the calibrator in Standby.

7. Disconnect the calibrator from the device.

The device is now adjusted with respect to your external source.

Reverification

Repeat the Accuracy Verification section using the 24-Hour Limits in Table 4 to determine the

as-left status of the device.

Note If any test fails Reverification after performing an adjustment, verify that you

have met the Test Conditions before returning your device to NI. Refer to Worldwide

Support and Services for assistance in returning the device to NI.

Specifications

Refer to the PXIe-4310 Specifications document for detailed PXIe-4310 specification information.

Worldwide Support and Services

The NI website is your complete resource for technical support. At ni.com/support, you

have access to everything from troubleshooting and application development self-help resources

to email and phone assistance from NI Application Engineers.

Visit ni.com/services for information about the services NI offers.

Visit ni.com/register to register your NI product. Product registration facilitates technical

support and ensures that you receive important information updates from NI.

NI corporate headquarters is located at 11500 North Mopac Expressway, Austin, Texas,

78759-3504, USA. For up-to-date contact information for your location, visit ni.com/

contact.

377027B-01 Apr20

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