National Instruments PXIe-4302 User manual

USER GUIDE AND TERMINAL BLOCK
SPECIFICATIONS
NI PXIe-4302/4303 and
TB-4302/4302C
32 Ch, 24-bit, 5 kS/s or 51.2 kS/s Simultaneous Filtered Data
Acquisition Module
This document explains how to install, configure, and set up the NI PXIe-4302 and
NI PXIe-4303 (NI PXIe-4302/4303) simultaneous filtered modules with the TB-4302 and
TB-4302C terminal blocks. Driver support for the NI PXIe-4302/4303 was first available in
NI-DAQmx 15.1. 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.
Note The keying of these terminal blocks prevents them from connecting to other
modules that could be damaged by the voltage present on the terminal block.
However, you should only use these terminal blocks with their supported modules.
Contents
Electromagnetic Compatibility Guidelines .............................................................................. 2
What You Need to Get Started ................................................................................................. 3
Installation ................................................................................................................................ 3
Install the Software........................................................................................................... 3
Unpack and Install the Module......................................................................................... 4
Connect the Signals .......................................................................................................... 5
Install the Terminal Block ................................................................................................ 8
Confirm NI PXIe-4302/4303 Module Recognition.......................................................... 10
Run Test Panels ................................................................................................................ 11
Take an NI-DAQmx Measurement .................................................................................. 11
NI-DAQmx Channels and Tasks.............................................................................. 11
Configure a Task Using the DAQ Assistant in MAX .............................................. 11
Use Your NI PXIe-4302/4303 Module in an Application................................................ 12
Programming Examples ........................................................................................... 12
Terminal Block Removal..........................................................................................................13
Module Removal ...................................................................................................................... 14
Create a Simulated Device .......................................................................................................15

2|ni.com |NI PXIe-4302/4303 and TB-4302/4302C
Cold-Junction Compensation (TB-4302 Only)......................................................................... 15
Minimizing Thermal Gradients ................................................................................................ 15
More Information...................................................................................................................... 16
Troubleshooting ................................................................................................................ 16
Specifications (TB-4302/4302C)..............................................................................................16
Calibration Interval ...................................................................................................................17
Electrical ................................................................................................................................... 17
TB-4302 ............................................................................................................................17
TB-4302C ......................................................................................................................... 17
Mechanical........................................................................................................................ 17
Physical .............................................................................................................................18
Environmental Specifications ...........................................................................................18
Operating Environment............................................................................................. 18
Storage Environment ........................................................................................................19
Shock and Vibration .........................................................................................................19
Safety ................................................................................................................................19
Safety Standards ...............................................................................................................19
Electromagnetic Compatibility ......................................................................................... 20
CE Compliance ................................................................................................................. 20
Online Product Certification............................................................................................. 20
Environmental Management............................................................................................. 21
World Wide Support and Services............................................................................................ 21
Electromagnetic Compatibility Guidelines
This product was tested and complies with the regulatory requirements and limits for
electromagnetic compatibility (EMC) stated in the product specifications. These requirements
and limits provide reasonable protection against harmful interference when the product is
operated in the intended operational electromagnetic environment.
This product is intended for use in industrial locations. However, harmful interference may
occur in some installations, when the product is connected to a peripheral device or test object,
or if the product is used in residential or commercial areas. To minimize interference with radio
and television reception and prevent unacceptable performance degradation, install and use this
product in strict accordance with the instructions in the product documentation.
Furthermore, any modifications to the product not expressly approved by National Instruments
could void your authority to operate it under your local regulatory rules.
Caution To ensure the specified EMC performance, operate this product only with
shielded, twisted pair cables and shielded accessories.
Caution To ensure the specified EMC performance, the length of all I/O cables
must be no longer than 30 m (100 ft).

NI PXIe-4302/4303 and TB-4302/4302C |© National Instruments |3
What You Need to Get Started
To set up and use a NI PXIe-4302/4303 module with a TB-4302/4302C terminal block, you need
the following items:
Hardware
– NI PXIe-4302/4303 module
– TB-4302/4302C terminal block
– NI PXI Express chassis
– Cabling and sensors as required for your application
Tools
– Number 1 and 2 Phillips-head screwdrivers
– 1/8 in. flathead screwdriver
– Long-nose pliers
– Wire cutter
– Wire insulation stripper
Documentation
–Read Me First: Safety and Electromagnetic Compatibility
– NI PXIe-4302/4303 and TB-4302/4302C User Guide and Terminal Block
Specifications
–NI PXIe-4302/4303 User Manual
– NI PXI Express chassis user manual
You can download needed documents from ni.com/manuals.
Installation
Install the Software
Note You must be an administrator to install NI software and devices on your
computer.
Ensure that the following software is installed before installing the NI PXIe-4302/4303 and
TB-4302/4302C hardware:
1. Your application software, such as LabVIEW, LabWindows™CVI™or .NET.
2. NI-DAQmx—NI PXIe-4302/4303 modules were first supported in NI-DAQmx 15.1.
Note For detailed NI software version support, refer to the NI-DAQmx Readme.
Back up any applications before upgrading software or modifying the application.

4|ni.com |NI PXIe-4302/4303 and TB-4302/4302C
Unpack and Install the Module
Remove the packaging and inspect the module. Contact NI if the module is damaged. Do not
install a damaged module.
Caution The module is static sensitive. Always properly ground yourself and the
equipment when handling or connecting to the module.
Complete the following steps to install the NI PXIe-4302/4303 module while referring to
Figures 1 and 2:
Note To maintain forced air cooling in the PXIe system, refer to the Maintain
Forced-Air Cooling Note to Users.
1. Plug in your chassis before installing the NI PXIe-4302/4303. The power cord grounds the
chassis and protects it from electrical damage while you install the module.
2. Make sure the chassis is powered off.
Caution To protect yourself, the chassis, and the NI PXIe-4302/4303 from
electrical hazards, leave the chassis powered off until you finish installing the
NI PXIe-4302/4303 module.
3. Touch a metal part on the chassis to discharge any accumulated static electricity.
4. Identify a supported PXI Express slot in the chassis. NI PXIe-4302/4303 modules can be
placed only in PXI Express Peripheral slots, PXI Express Hybrid Peripheral slots, and PXI
Express System Timing slots. Refer to the chassis documentation for details.
Figure 1. Symbols for PXI Express/ PXI Express Hybrid/ PXI Slots
5. Remove the filler panel, and touch any metal part of the chassis to discharge static
electricity.
6. Place the module edges into the module guides at the top and bottom of the slot.
Caution When installing the module, make sure both edges are positioned inside
the guides and that the module components do not come into contact with adjacent
modules.
1 PXI Express System Controller Slot
2 PXI Peripheral Slot
3 PXI Express Hybrid Peripheral Slot
4 PXI Express System Timing Slot
NI PXIe-1062Q
1 2 34

NI PXIe-4302/4303 and TB-4302/4302C |© National Instruments |5
7. Slide the module along the guides until it reaches the rear connector then seat the module
by pushing the front panel until it is flush with the front panel of the chassis.
8. Secure the module to the chassis using the front-panel captive screws, shown in Figure 2.
Tighten the screws to 0.31 N ·m (2.7 lb · in.).
Figure 2. Installing NI PXIe-4302/4303 Modules
Connect the Signals
Caution For EMC compliance, operate this product with shielded cables and
accessories.
To connect signals to the terminal block, refer to Figures 3 and, 4 or 5 while completing the
following steps:
Note You can find the pinout names and locations in Measurement & Automation
Explorer (MAX) at any time by right-clicking the device name under Devices and
Interfaces and selecting Device Pinouts.
1. Loosen the captive top cover screws and remove the top cover.
2. Loosen the strain-relief screws and remove the strain-relief bar.
3. Prepare the shielded signal wire by stripping the insulation no more than 7 mm (0.28 in.).
1CaptiveScrews
NI PXIe-1062Q
COOLING CLEARANCE AND FANFILTER MAINTENANCE REQUIRED.SEEMANUAL.
1

6|ni.com |NI PXIe-4302/4303 and TB-4302/4302C
4. Run the shielded signal wires through the strain-relief opening.
Figure 3. TB-4302/4302C Parts Locator Diagram
5. Insert the stripped end of the shielded signal wires fully into the appropriate terminal. Refer
to the label next to each screw terminal to determine the function of the terminal. The
NI PXIe-4302/4303 User Manual provides more detailed wiring information. Make sure no
exposed wire extends past the screw terminal. Exposed wire increases the risk of a short
circuit that can cause circuit failure.
1 Strain-Relief Screws
2 Strain-Relief Bar
3 Tie Wrap Holes
4 Ground Lugs
5 Terminal Block to Module Connector
6 Captive Top Cover Screws
7 Top Cover
8 Tie Wraps
9 Shielded Signal Wires
3
1 2
1
4
6
7
6
5
4
8
9

NI PXIe-4302/4303 and TB-4302/4302C |© National Instruments |7
Figure 4. TB-4302 Circuit Board Parts Locator Diagram
Figure 5. TB-4302C Circuit Board Parts Locator Diagram
Note Refer to the NI PXIe-4302/4303 User Manual for wiring diagrams showing
how to connect sensors to the TB-4302/4302C.
6. Tighten the terminal screws to a torque of 0.2 to 0.25 N · m (1.77 to 2.21 lb · in.).
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
FOR PATENTS: NI.COM/PATENTS
AI3
VSUP
AI2
VSUP
AI4
AI5
AI7
VSUP
AI6
VSUP
VSUP
VSUP
AI0
AI1
VSUP
VSUP
AI2
VSUP
AI1
VSUP
AI3
AI4
AI15
VSUP
AI8
VSUP
VSUP
VSUP
A9
AI0
VSUP
VSUP
AI19
VSUP
AI18
VSUP
AI20
AI21
AI23
VSUP
AI22
VSUP
VSUP
VSUP
AI16
AI17
VSUP
VSUP
AI28
VSUP
AI27
VSUP
AI29
AI30
AI31
VSUP
AI24
VSUP
VSUP
VSUP
A25
AI26
VSUP
VSUP
S/N
158141A-01L
NI TB-4302C
GND
PFI0
AISENSE
AISENSE
AISENSE
AISENSE
AISENSE
AISENSE
AISENSE
AISENSE
AISENSE
AISENSE
AISENSE
AISENSE
AISENSE
AISENSE
AISENSE
AISENSE
AISENSE
AIGND
AISENSE
VSUP
J2 J4
J3 J7 J5 J9
J21
J19 J10
J6
J15 J11 J17
U9 U11 U10 J12
J8
J13 J18
J16
J14
CR3
COPYRIGHT 2014

8|ni.com |NI PXIe-4302/4303 and TB-4302/4302C
Caution Any wires connected to the ground must be sufficiently insulated from
high voltage.
7. Use the ground lugs to attach a shield wire to the ground.
Note Refer to the NI PXIe-4302/4303 User Manual for details about shielding the
signals.
8. Reinstall the strain-relief bar and tighten the strain-relief screws.
9. Use tie wraps to connect the shielded signal wires to the tie-wrap holes for additional strain
relief when necessary.
10. Reinstall the top cover and tighten the captive top cover screws.
Note For information about sensors, go to ni.com/sensors.
Install the Terminal Block
Refer to Figure 6 to install the terminal block on the module while completing the following
steps:
1. Move the TB-4302/4302C into position in front of the NI PXIe-4302/4303 and engage the
alignment feature with the guide on the associated module.
Figure 6. Installing the TB-4302/4302C on the NI PXIe-4302/4303 Module
1 PXIe Controller
2 PXIe Chassis
3 Mounting Screw
4 TB-4302/4302C Terminal Block
5 NI PXIe-4302/4303 Module
6 Alignment Feature
NI PXIe-1062Q
2
1
3
6
4
5
COOLINGCLEARANCEANDFANFILTERMAINTENANCEREQUIRED.SEE MANUA L. COOLING CLEARANCEAND FANFILTER MAINTENANCE REQUIRED.SEEMANUAL.

NI PXIe-4302/4303 and TB-4302/4302C |© National Instruments |9
2. Attach the TB-4302/4302C to the NI PXIe-4302/4303 module by pushing the terminal
block straight into the module. A spring mechanism will lock in the bottom of the terminal
block.
3. Tighten the mounting screw at the top of the TB-4302/4302C to attach it to the
NI PXIe-4302/4303 module.
Note For safety purposes and to prevent damage to equipment when high voltages
are present, all NI PXIe-4302/4303 modules and TB-4302/4302C terminal blocks are
keyed to prevent connection between incompatible terminal blocks, modules, and/or
cables.
4. Power on the chassis.
Figure 7 shows an example NI PXIe-4302/4303 system setup.
Figure 7. Sample NI PXIe-4302/4303 System
1 Terminal Block 2 Signal Input
NI PXIe-1062Q
1
COOLING CLEARANCE AND FAN FILTER MAINTENANCE REQUIRED.SEE MANUAL. COOLING CLEARANCE AND FANFILTERMAINTENANCE REQUIRED.SEE MANUAL.
2

10 |ni.com |NI PXIe-4302/4303 and TB-4302/4302C
Confirm NI PXIe-4302/4303 Module Recognition
To confirm module recognition, complete the following steps:
Note Software support for the NI PXIe-4302/4303 is provided by NI-DAQmx. The
DAQ Getting Started Guide, which you can download at ni.com/manuals, offers
step-by-step NI-DAQmx instructions for installing software and hardware,
configuring channels and tasks, and getting started developing an application. For
detailed NI software version support, refer to the NI-DAQmx Readme.
1. Launch MAX.
2. Expand Devices and Interfaces, and expand the chassis in which the module is located to
confirm that MAX detects the module and terminal block. The terminal block should
appear beneath its associated module. If your module or terminal block is not listed, press
<F5> to refresh MAX. If the module is still not recognized, go to ni.com/support/
daqmx.
Tip Using an NI-DAQmx simulated device, you can test NI-DAQmx applications
without installing hardware. Refer to the Create a Simulated Device section for
instructions for creating NI-DAQmx simulated devices.
3. Right-click the module name and select Self-Test. When the self-test completes, a
verification message appears. If an error occurs, refer to ni.com/support/daqmx.
For information about sensors, go to ni.com/sensors.

NI PXIe-4302/4303 and TB-4302/4302C |© National Instruments |11
Run Test Panels
1. In MAX, expand Devices and Interfaces select the chassis in which the module is located.
2. Right-click the device, and select Test Panels.
3. Click Start to test device functions, or Help for operating instructions.
To troubleshoot errors, refer to the NI-DAQmx Help, or go to ni.com/support.
Take an NI-DAQmx Measurement
NI-DAQmx Channels and Tasks
Refer to the NI-DAQmx Help for complete information about channels and tasks.
Use the DAQ Assistant to configure virtual channels and tasks in MAX or in your application.
Configure a Task Using the DAQ Assistant in MAX
Complete the following steps to create a task using the DAQ Assistant in MAX:
1. In MAX, right-click Data Neighborhood and select Create New to open the DAQ
Assistant.
2. Select NI-DAQmx Task and click Next.
3. Select Acquire Signals.
4. Select the analog input, and the measurement type, such as voltage.
5. Select the physical channel(s) to use and click Next.

12 |ni.com |NI PXIe-4302/4303 and TB-4302/4302C
6. Name the task and click Finish.
7. Configure the individual channel settings. Each physical channel you assign to a task
receives a virtual channel name. To modify the input range or other settings, select the
channel. Click Details for physical channel information. Configure the timing and
triggering for your task. Click Run.
Use Your NI PXIe-4302/4303 Module in an Application
For NI software version compatibility, refer to the NI-DAQmx Readme, available from Start»
All Programs»National Instruments»NI-DAQmx.
To get started with data acquisition in your application software, refer to the tutorials listed in
Table 1.
Programming Examples
NI-DAQmx includes example programs to help you get started developing an application.
LabVIEW and CVI examples are located at Help»Find Examples in your application software.
Text-based code examples are located at All Programs»National Instruments»NI-DAQmx»
Text-Based Code Support. Modify example code and save it in an application, or use examples
to develop a new application or add example code to an existing application.
For other examples, go to ni.com/info and enter the Info Code daqmxexp.
Table 1. DAQ Assistant Tutorial Locations
Application Tutorial Location
LabVIEW Go to ni.com and search for Taking an NI-DAQmx Measurement in
LabVIEW.
LabWindows/CVI Go to Help»Contents. Next, go to Using LabWindows/CVI»Data Acquisition»
Taking an NI-DAQmx Measurement in LabWindows/CVI.
Measurement
Studio
Go to NI Measurement Studio Help»Getting Started with the Measurement
Studio Class Libraries»Measurement Studio Walkthroughs»Walkthrough:
Creating a Measurement Studio NI-DAQmx Application.
NI SignalExpress*Go to Help»Taking an NI-DAQmx Measurement in SignalExpress.
*NI SignalExpress, an easy-to-use configuration-based tool for data logging applications, is at Start»All
Programs»National Instruments»NI SignalExpress.

NI PXIe-4302/4303 and TB-4302/4302C |© National Instruments |13
Terminal Block Removal
To remove the terminal block, refer to Figure 8 while completing the following steps:
Note The chassis can be powered on or off when removing the terminal block.
1. Loosen the terminal block mounting screw located at the top of the terminal block.
2. To remove the terminal block:
a. Raise the latch release using a flathead screwdriver to disengage the latch.
b. With the latch release raised, grasp the terminal block and pull it away from the
module.
Figure 8. Removing the TB-4302/4302C from the NI PXIe-4302/4303 Module
3. Store the terminal block in an antistatic protective bag.
1 Mounting Screw
2 Latch Release
3 PXIe Controller
4 PXIe Chassis
5 TB-4302/4302C Terminal Block
NI PXIe-1062Q
5
1
2
COOLING CLEARANCE AND FAN FILTER MAINTENANCE REQUIRED. SEEMANUAL.
COOLING CLEARANCE AND FANFILTER MAINTENANCEREQUIRED.SEEMANUAL.
3
4

14 |ni.com |NI PXIe-4302/4303 and TB-4302/4302C
Module Removal
Caution Do not remove a module with the power on. Doing so can damage the
module.
To remove the module, refer to Figure 9 while completing the following steps:
Note To maintain forced air cooling in the PXIe system, refer to the Maintain
Forced-Air Cooling Note to Users.
1. Make sure that the chassis is powered off before removing the module.
2. Loosen the captive screws on the top and bottom of the module.
Caution Do not pull the front panel to remove the module. Doing so may cause
module components to come into contact with adjacent modules, causing damage to
the modules.
3. Pull the captive screws to unseat the module and slowly slide the module along the guides.
4. Replace the filler panel in the empty slot.
5. Store the module in an antistatic protective bag.
Figure 9. Removing NI PXIe-4302/4303 Modules
1 Captive Screws (Use to remove modules.) 2 Front Panel (Do not use to remove modules.)
NI PXIe-1062Q
COOLING CLEARANCEAND FANFILTER MAINTENANCEREQUIRED.SEEMANUAL.
21

NI PXIe-4302/4303 and TB-4302/4302C |© National Instruments |15
Create a Simulated Device
To run examples without the hardware installed, use an NI-DAQmx simulated device. To create
a simulated device in MAX:
1. Launch MAX.
2. Right click Devices and Interfaces»Create New.
3. From the dialog, select Simulated NI-DAQmx Device or Modular Instrument.
4. Type 4302 or 4303 in the text box at the top of the window.
5. Select the device from the list provided.
6. Click OK.
Cold-Junction Compensation (TB-4302 Only)
The TB-4302 contains a temperature sensor that is used to measure the temperature of the
terminal block for cold-junction compensation, which is performed when computing the
thermocouple temperature measurement.
Cold-junction compensation is the process of measuring the temperature of the screw terminal
junction for the thermocouple and applying a representative compensating temperature to the
temperature measured by the thermocouple channel. The accuracy of the cold-junction
temperature measurement contributes to the accuracy of the overall thermocouple temperature
measurement. The TB-4302 is designed to ensure high-accuracy cold-junction temperature
measurements under a variety of conditions; however, care must be taken to ensure the best
possible accuracy. Refer to the Minimizing Thermal Gradients section for guidelines to
minimize thermal gradients that can impact the CJC accuracy. Refer to the TB-4302 section for
the CJC accuracy specifications.
Minimizing Thermal Gradients
Thermal gradients can be caused by changes in the ambient air temperature near the terminal
block, heat sources from other devices near the terminal block, or by the thermocouple wire if it
conducts heat to or away from the terminal junctions. For optimal CJC accuracy performance,
ensure that changes in ambient temperature and temperature gradients near the terminal block
are kept to a minimum.
Follow these guidelines to minimize thermal gradients that can impact the CJC accuracy:
• Use the smallest gauge thermocouple wire suitable for the application. Smaller wire
transfers less heat to or from the terminal junction.
• Run thermocouple wiring together near the terminal block to keep the wires at the same
temperature.
• Avoid running thermocouple wires near hot or cold objects.
• If you connect any extension wires to thermocouple wires, use wires made of the same
conductive material as the thermocouple wires.
• Minimize adjacent heat sources and air flow across the terminal block.

16 |ni.com |NI PXIe-4302/4303 and TB-4302/4302C
• Keep the ambient temperature as stable as possible.
• Keep the terminal block, module, and chassis in a stable and consistent orientation.
• Install the PXIe filler panels in any unused slots.
• When stacking the system, avoid stacking the chassis above a heat source as heat rises and
can introduce error.
• Allow the thermal gradients to settle after a change in system power or in ambient
temperature. A change in system power can occur when the system powers on. Refer to the
warm-up time in the NI PXIe-4302/4303 Specifications for more information.
• If your PXIe chassis has fan filters, clean or replace them regularly to ensure proper system
cooling. Refer to the PXI/PXI Express Chassis Fan Filter Kit document for more
information.
Note Refer to the Maintain Forced-Air Cooling Note to Users for more
information about maintaining optimal forced-air cooling for PXI/PXI Express
devices.
More Information
After you install NI-DAQmx, the NI-DAQmx documentation is available from Start»All
Programs»National Instruments»NI-DAQmx. Additional resources are online at ni.com/
gettingstarted.
You can access online device documentation by right-clicking your module in MAX and
selecting Help»Online Device Documentation. A browser window opens to ni.com/
manuals with the results of a search for relevant documents. If you do not have Web access,
documents for supported modules are included on the NI-DAQmx disc.
Troubleshooting
• Go to ni.com/support/install or ni.com/kb.
• If you need to return your National Instruments hardware for repair or device calibration,
go to ni.com/info and enter rdsenn to start the Return Merchandise Authorization
(RMA) process.
Specifications (TB-4302/4302C)
Note NI PXIe-4302/4303 module specifications are located in the
NI PXIe-4302/4303 Specifications document.
All performance specifications are typical unless otherwise noted. These specifications are valid
within the full operating temperature range.

NI PXIe-4302/4303 and TB-4302/4302C |© National Instruments |17
Calibration Interval
TB-4302............................................................ No calibration
TB-4302C ......................................................... 1 year interval (verification only)
Electrical
TB-4302
Input range........................................................ Refer to NI PXIe-4302/4303 Specifications
CJC accuracy .................................................... 1.5 °C1, 2
TB-4302C
Input range
Nominal .................................................... ±20 mA
Minimum .................................................. ±20.38 mA
Typical ...................................................... ±20.68 mA
Current shunt
Value ......................................................... 5 Ω
Accuracy ................................................... 0.5% max
Temperature stability ................................ 25 ppm/°C
Input impedance
between AI to AISENSE .................................. 47 Ω
Max voltage of AISENSE ................................ ±8.4 V
Vsup pins
Current ...................................................... 2 A max
Voltage ...................................................... 30 V max
Overvoltage protection
between AI, AISENSE, and AIGND................ ±30 V for up to two AI pins
Mechanical
Screw terminal wire gauge ............................... 1.5 mm2(16 AWG), max
1 Combines CJC sensor accuracy and temperature difference between the CJC sensor and each screw
terminal.
2 Represents performance for wire gauge of 24 AWG.

18 |ni.com |NI PXIe-4302/4303 and TB-4302/4302C
Physical
Figure 10. TB-4302/4302C Dimensions
Weight
TB-4302 ....................................................556 g (20 oz)
TB-4302C .................................................632 g (22 oz)
Caution Clean the hardware with a soft, nonmetallic brush. Make sure that the
hardware is completely dry and free from contaminants before returning it to service.
Environmental Specifications
Maximum altitude.............................................2,000 m (800 mbar), at 25 °C ambient
temperature
Pollution Degree ...............................................2
Indoor use only
Operating Environment
Ambient temperature range ..............................0 °C to 55 °C
(Tested in accordance with IEC 60068-2-1 and
IEC 60068-2-2. Meets MIL-PRF-28800F
Class 3 low temperature limit and
MIL-PRF-28800F Class 2 high temperature
limit.)
Relative humidity range....................................10% to 90%, noncondensing
(Tested in accordance with IEC 60068-2-56.)
12.95 cm
(5.10 in.)
15.28cm
(6.02 in.)

NI PXIe-4302/4303 and TB-4302/4302C |© National Instruments |19
Storage Environment
Ambient temperature range .............................. -40 °C to 71 °C
(Tested in accordance with IEC 60068-2-1 and
IEC 60068-2-2. Meets MIL-PRF-28800F
Class 3 limits.)
Relative humidity range.................................... 5% to 95%, noncondensing
(Tested in accordance with IEC 60068-2-56.)
Shock and Vibration
Operating shock ................................................ 30 g peak, half-sine, 11 ms pulse
(Tested in accordance with IEC 60068-2-27.
Meets MIL-PRF-28800F Class 2 limits.)
Random vibration
Operating .................................................. 5 Hz to 500 Hz, 0.3 grms
Non-operating........................................... 5 Hz to 500 Hz, 2.4 grms
(Tested in accordance with IEC 60068-2-64.
Non-operating test profile exceeds the
requirements of MIL-PRF-28800F, Class 3.)
Safety
Measurement Category..................................... I1
Caution Do not connect the TB-4302/4302C to signals or use for measurements
within Measurement Categories II, III or IV.
Caution The protection provided by the TB-4302/4302C can be impaired if it is
used in a manner not described in this document.
Safety Standards
This product meets the requirements of the following standards of safety for electrical equipment
for measurement, control, and laboratory use:
• IEC 61010-1, EN 61010-1
• UL 61010-1, CSA 61010-1
Note For UL and other safety certifications, refer to the product label or the Online
Product Certification section.
1 Measurement Categories CAT I and CAT O are equivalent. These test and measurement circuits are not
intended for direct connection to the MAINS building installations of Measurement Categories CAT II,
CAT III, or CAT IV.

20 |ni.com |NI PXIe-4302/4303 and TB-4302/4302C
Electromagnetic Compatibility
This product meets the requirements of the following EMC standards for electrical equipment
for measurement, control, and laboratory use:
• EN 61326-1 (IEC 61326-1): Class A emissions; Basic immunity
• EN 55011 (CISPR 11): Group 1, Class A emissions
• EN 55022 (CISPR 22): Class A emissions
• EN 55024 (CISPR 24): Immunity
• AS/NZS CISPR 11: Group 1, Class A emissions
• AS/NZS CISPR 22: Class A emissions
• FCC 47 CFR Part 15B: Class A emissions
• ICES-001: Class A emissions
Note In the United States (per FCC 47 CFR), Class A equipment is intended for use
in commercial, light-industrial, and heavy-industrial locations. In Europe, Canada,
Australia and New Zealand (per CISPR 11) Class A equipment is intended for use
only in heavy-industrial locations.
Note Group 1 equipment (per CISPR 11) is any industrial, scientific, or medical
equipment that does not intentionally generate radio frequency energy for the
treatment of material or inspection/analysis purposes.
Note For the standards applied to assess the EMC of this product, refer to the
Online Product Certification section.
CE Compliance
This product meets the essential requirements of applicable European Directives as follows:
• 2014/35/EU; Low-Voltage Directive (safety)
• 2014/30/EU; Electromagnetic Compatibility Directive (EMC)
Online Product Certification
Refer to the product Declaration of Conformity (DoC) for additional regulatory compliance
information. To obtain product certifications and the DoC for this product, visit ni.com/
certification, search by model number or product line, and click the appropriate link in the
Certification column.