National Instruments PXIe-4302 Manual

CALIBRATION PROCEDURE
PXIe-4302/4303 and TB-4302C
32 Ch, 24-bit, 5 kS/s or 51.2 kS/s Simultaneous Filtered Data
Acquisition Module
This document contains the verification and adjustment procedure for the National Instruments
PXIe-4302/4303 module and the verification procedure for the National Instruments TB-4302C
terminal block.
Contents
Software.................................................................................................................................... 1
Documentation.......................................................................................................................... 2
PXIe-4302/4303 Verification and Adjustment......................................................................... 2
Test Equipment................................................................................................................. 2
Connecting the TB-4302 .......................................................................................... 3
Test Conditions.................................................................................................................5
Initial Setup....................................................................................................................... 5
Accuracy Verification....................................................................................................... 5
Adjustment........................................................................................................................ 8
EEPROM Update ............................................................................................................. 9
Reverification ................................................................................................................... 10
TB-4302C Verification............................................................................................................. 10
Test Equipment................................................................................................................. 10
Accuracy Verification....................................................................................................... 11
Specifications............................................................................................................................ 14
Revision History ....................................................................................................................... 14
NI Services ............................................................................................................................... 14
Software
Calibrating the PXIe-4302/4303 requires you to install the following package on the calibration
system.
• NI-DAQmx 15.1 or later
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.
No other software is required to verify the operation of the TB-4302C.

2|ni.com |PXIe-4302/4303 and TB-4302C Calibration Procedure
Documentation
You might find the following documents helpful as you perform the calibration procedure.
• NI PXIe-4302/4303 and TB-4302/4302C User Guide and Terminal Block Specifications
• NI PXIe-4302/4303 User Manual
• NI PXIe-4302/4303 Specifications
• NI-DAQmx Readme
• NI-DAQmx Help
•LabVIEWHelp
• NI-DAQmx C Reference Help
• NI-DAQmx .NET Help Support for Visual Studio
PXIe-4302/4303 Verification and Adjustment
This section provides information for verifying and adjusting the PXIe-4302/4303.
Test Equipment
Table 1 lists the equipment recommended for the performance verification and adjustment
procedures of the PXIe-4302/4303. If the recommended equipment is not available, select a
substitute using the requirements listed in Table 1.
Table 1. Recommended Equipment for PXIe-4302/4303 Verification
and Adjustment
Equipment Recommended Model Requirements
DMM PXI-4071 Use a DMM that has an
accuracy of 13 ppm or better
when measuring the 10 V
range, an accuracy of
30 ppm or better when
measuring the 100 mV
range, and an offset error of
0.8 V or better at 0 V.
PXI Express Chassis PXIe-1062Q If this chassis is unavailable,
use another PXI Express
chassis, such as the
PXIe-1082 or PXIe-1078.

PXIe-4302/4303 and TB-4302C Calibration Procedure |© National Instruments Corporation |3
Connecting the TB-4302
The TB-4302 provides connections for the PXIe-4302/4303. Figure 1 shows the pin assignments
of the TB-4302.
Figure 1. TB-4302 Circuit Board Parts Locator Diagram
Each channel consists of two terminal connections specific to that channel as shown in Table 2.
You can verify or adjust the accuracy for any or all channels depending on the desired test
coverage. Refer to Figure 2 and only connect the input channels required for verification or
adjustment in parallel.
Refer to Table 2 for the analog signal names of the TB-4302.
Connection Accessory TB-4302 —
SMU PXIe-4139 Noise (0.1 Hz to 10 Hz, peak
to peak) is 60 V or better at
10 V.
Noise (0.1 Hz to 10 Hz, peak
to peak) is 2 V or better at
100 mV.
Table 1. Recommended Equipment for PXIe-4302/4303 Verification
and Adjustment (Continued)
Equipment Recommended Model Requirements
U7
AI3-
AI3+
AI2+
AI4+
AI4-
AI5-
AI7-
AI7+
AI6-
AI6+
AI5+
AI0+
AI0-
AI1-
AI2+
AI1+
AI9+
AI9-
AI10+
AI13+
AI13-
AI14+
AI15+
AI15-
AI14-
AI12+
AI11+
AI10-
AI8+
AI11-
AI8-
AI12-
AI7+
AI7-
AI18+
AI21+
AI21-
AI22+
AI23+
AI23-
AI22-
AI20+
AI19+
AI18-
AI6+
AI19-
AI6-
AI20-
AI5+
AI5-
AI16+
AI29+
AI29-
AI30+
AI31+
AI31-
AI30-
AI28+
AI17+
AI16-
AI4+
AI17-
AI4-
AI28-
FOR PATENTS: NI.COM/PATENTS
NI TB-4302
S/N
158016B-01L
COPYRIGHT 2015
UL94V-0
AIGND AIGND
AIGND AIGND
J21J4188
J5
J3
J6 J8
J9
J7
J10 J121818
8181
U6
U5
CR3
AIGND AIGND
AIGND AIGND
J15
J17
J11 J13 J18
J16J14
8181
U2 R2
U3
C1
U1
C3
C5
C2
R1
R5 R6 R4
R7
R8
R3
CR1
U4
C6
CR2
C4
PFI0
DGND

4|ni.com |PXIe-4302/4303 and TB-4302C Calibration Procedure
Complete the following steps to connect the TB-4302.
1. Install the PXIe-4302/4303 and the TB-4302 in the PXI Express chassis according to the
instructions in the NI PXIe-4302/4303 and TB-4302/4302C User Guide and Terminal
Block Specifications.
2. Configure the PXIe-4139 to voltage output mode and enable remote sensing. Connect the
PXIe-4139 output to the TB-4302 as shown in Figure 2.
3. Use two 10 kresistors with 1% or better tolerance to build a voltage divider to bias the
PXIe-4139 output and set the common-mode input of the PXIe-4302/4303 to zero volts.
Connect one resistor between AI+ and AIGND and the other between AI- and AIGND as
shown in Figure 2.
4. Connect the PXI-4071 to measure the differential voltage across the TB-4302 AI+ and AI-
terminals. A detailed wiring diagram is shown in Figure 2.
Figure 2. Connecting the TB-4302
Table 2. TB-4302 Analog Signal Names
Signal Name Signal Description
AI+ Positive input voltage terminal
AI- Negative input voltage terminal
AIGND Analog ground input
4071
4139
HI
LO
SENSE HI
SENSE LO
HI
LO
AI0+
AI0–
AI1+
AI1–
AI31+
AI31–
10 k Ω 10 k Ω
TB-4302

PXIe-4302/4303 and TB-4302C Calibration Procedure |© National Instruments Corporation |5
Test Conditions
The following setup and environmental conditions are required to ensure the PXIe-4302/4303
meets published specifications.
• Keep connections to the PXIe-4302/4303 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-4302 are secure.
• Use shielded copper wire for all cable connections to the TB-4302. Use twisted-pair wire
to eliminate noise and thermal offsets.
• Maintain an ambient temperature of 23 °C ±5 °C. The PXIe-4302/4303 temperature will be
greater than the ambient temperature.
• Keep relative humidity below 80%.
• Allow a warm-up time of at least 15 minutes to ensure that the PXIe-4302/4303
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 on ni.com.
Initial Setup
Refer to the NI PXIe-4302/4303 and TB-4302/4302C Installation Guide and Terminal Block
Specifications for information about how to install the software and hardware and how to
configure the device in 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 or to verify
and adjust. This document uses Dev1 to refer to the device name. In the following
procedures, use the device name as it appears in MAX.
Accuracy Verification
The following performance verification procedures describe the sequence of operations and
provides the test points required to verify the PXIe-4302/4303. The verification procedures
assume that adequate traceable uncertainties are available for the calibration references.
The PXIe-4302/4303 has 32 independent analog input channels. The input range of each channel
can be set to 10 V or 100 mV. You can verify the accuracy of either range for all of the channels
depending upon your desired test coverage.
Complete the following steps to verify the voltage mode accuracy of the PXIe-4302/4303.
1. Set the PXIe-4139 voltage output to zero volts.
2. Connect the PXIe-4139 and PXI-4071 to the TB-4302 as shown in Figure 2.
3. Use Table 3 to configure the PXIe-4139 to output a Test Point value for the appropriate
range shown in Table 6, beginning with the values in the first row.

6|ni.com |PXIe-4302/4303 and TB-4302C Calibration Procedure
4. Refer to Table 4 to configure the PXI-4071 and acquire a voltage measurement.
5. Acquire a voltage measurement with the PXIe-4302/4303.
a. Create a DAQmx task.
b. Create and configure the AI channel according to the values shown in Table 5.
Table 3. PXIe-4139 Voltage Output Setup
Configuration Value
Function Voltage output
Sense Remote
Range 600 mV range for test points less than 100 mV
60 V range for all other test points
Current Limit 20 mA
Current Limit Range 200 mA
Table 4. PXI-4071 Voltage Measurement Setup
Configuration Value
Function DC measurement
Range 1 V range for test points less than 100 mV.
10 V range for all other test points.
Digital Resolution 7.5 digits
Aperture Time 100 ms
Autozero On
ADC Calibration On
Input Impedance > 10 G
DC Noise Rejection High Order
Number of Averages 1
Power Line Frequency Dependent upon the local power line characteristics.

PXIe-4302/4303 and TB-4302C Calibration Procedure |© National Instruments Corporation |7
c. Start the task.
d. Average the readings that you acquired.
e. Clear the task.
f. Compare the resulting average to the Lower Limit and Upper Limit values in Table 6.
If the result is between these values, the device passes the test.
6. For each value in Table 6, repeat steps 3 through 5 for all channels.
7. Set the PXIe-4139 output to be zero volts.
8. Disconnect the PXIe-4139 and PXI-4071 from the TB-4302.
Table 5. AI Voltage Mode Setup
Configuration Value
Channel Name Dev1/ai0:32
Task AI voltage
Sample Mode Finite samples
Sample Clock Rate 5000
Samples per Channel 5000
Maximum Value Appropriate maximum range value from Table 6
Minimum Value Appropriate minimum range value from Table 6
Units Vo l t s
Table 6. Voltage Measurement Accuracy Limits
Range (V)
Test
Point (V) Lower Limit (V) Upper Limit (V)Minimum
Maximu
m
-0.1 0.1 -0.095 DMM Reading - 0.00007 V DMM Reading + 0.00007 V
-0.1 0.1 0DMM Reading - 0.000029 V DMM Reading + 0.000029 V
-0.1 0.1 0.095 DMM Reading - 0.00007 V DMM Reading + 0.00007 V
-10 10 -9.5 DMM Reading - 0.004207 V DMM Reading + 0.004207 V
-10 10 0DMM Reading - 0.001262 V DMM Reading + 0.001262 V
-10 10 9.5 DMM Reading - 0.004207 V DMM Reading + 0.004207 V

8|ni.com |PXIe-4302/4303 and TB-4302C Calibration Procedure
Adjustment
The following performance adjustment procedure describes the sequence of operations required
to adjust the PXIe-4302/4203.
Complete the following steps to adjust the accuracy of the PXIe-4302/4203.
1. Set the PXIe-4139 output to be zero volts.
2. Connect the PXIe-4139 and PXI-4071 to the TB-4302 as shown in Figure 2.
3. Call the DAQmx Initialize External Calibration function with the following parameters:
Device In: Dev1
Password: NI1
4. Call the 4302/4303 instance of the DAQmx Setup SC Express Calibration function with the
following parameters:
calhandle in: calhandle output from DAQmx Initialize External Calibration
rangeMax: Appropriate Range Max starting with the value in the first row of Table 7
rangeMin: Appropriate Range Min starting with the value in the first row of Table 7
physical channels: dev1/ai0:31
1 The default password is NI, which can be changed. Refer to the NI-DAQmx Help for details.
Table 7. Voltage Mode Adjustment Test Points
Range (V)
Test Points (V)Max Min
0.1 -0.1 -0.09
-0.06
-0.03
0
0.03
0.06
0.09

PXIe-4302/4303 and TB-4302C Calibration Procedure |© National Instruments Corporation |9
5. Refer to Table 3 to configure the PXIe-4139. Set the PXIe-4139 output equal to the first
Test Point for the corresponding range in Table 7 that was configured in step 4.
6. Enable the PXIe-4139 output.
7. Refer to Table 4 to configure the PXI-4071 and acquire a voltage measurement.
8. Call the 4302/4303 instance of the DAQmx Adjust SC Express Calibration function with
the following parameters:
calhandle in: calhandle output from DAQmx Initialize External Calibration reference
voltage: DMM measurement value from step 7
9. Repeat steps 5 through 8 for the remaining Test Point values from Table 7 for the
corresponding range that was configured in step 4.
10. Repeat steps 4 through 9 for the remaining ranges from Table 7.
11. Call the 4302/4303 instance of the DAQmx Adjust SC Express Calibration function with
the following parameters:
calhandle in: calhandle output from DAQmx Adjust SC Express Calibration
action: commit
EEPROM Update
When an adjustment procedure is completed, the PXIe-4302/4303 internal calibration memory
(EEPROM) is immediately updated.
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.
10 -10 -9
-6
-3
0
3
6
9
Table 7. Voltage Mode Adjustment Test Points (Continued)
Range (V)
Test Points (V)Max Min

10 |ni.com |PXIe-4302/4303 and TB-4302C Calibration Procedure
Reverification
Repeat the Accuracy Verification section 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 NI Services
for assistance in returning the device to NI.
TB-4302C Verification
This section provides information for verifying the performance of the TB-4302C.
Test Equipment
Table 8 lists the equipment recommended for verifying the shunt value of the TB-4302C. If the
recommended equipment is not available, select a substitute using the requirements listed in
Table 8.
Table 8. Recommended Equipment for PXIe-4302/4303 Verification and Adjustment
Equipment Recommended Model Requirements
DMM PXI-4071 Use a DMM with an
accuracy of 136 ppm or
better when measuring 5 Ω
in 4-wire mode.